Inside a Chinese electrically heated lunch / bento box.
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- Опубліковано 19 гру 2018
- A rather odd device that leaves me wondering how many people use these to heat their meals at work on a daily basis. My first thought was about the risks of holding food at a medium temperature for long periods of time, particularly the common food poisoning villains like rice, pasta and potato. But used properly this unit does seem to bring the food to a high enough temperature to limit that risk. The instructions do suggest adding a small amount of water before heating, and I guess that may be to allow the steam to couple the heat throughout the food.
My test was perhaps a bit unfair in that I put a high mass of water in the unit. With a portion of loose food the heating time would be much faster, and especially so in a warmer environment. Yes, I do keep my home at a really low temperature in winter. I prefer a cool dry environment to a hot stuffy one.
Electrically this unit is very simple. Just a couple of self regulating PTC (Positive Temperature Coefficient - resistance rises as they get hotter) heating elements on an aluminium heat spreader. At plug in if the unit is very cold the current will peak at about 3A on a 240V supply before rapidly falling to a power dissipation of about 40W (20W per element). When it reaches its highest temperature the current drops to a passive level determined by the cooling effect of the external environment.
I suppose that something like this could also have other uses than heating food. It could also be used for various workshop applications where it's useful to heat something slightly before use.
One thing worthy of note is that the figure-8 cable supplied is copper coated aluminium, so it's possibly worth swapping it for a better locally sourced cable.
Here's a generic eBay search link to these type of units. You'll have to substitute your local voltage in the search box:-
www.ebay.com/sch/i.html?_from...
I plugged this 220V unit into a 110V supply and it still stabilised at 40W so it may be capable of a wide voltage range. But I've not tested that under actual food heating conditions.
If you enjoy these videos you can help support the channel with a dollar for coffee, cookies and random gadgets for disassembly at:-
www.bigclive.com/coffee.htm
This also keeps the channel independent of UA-cam's advertising algorithms allowing it to be a bit more dangerous and naughty. - Наука та технологія
You and I like to keep our living conditions at the same temperature. Finally someone that agrees!
It's just fresher. Maybe low temperature operation is another feature of humans optimised for engineering.
I agree. I'm wearing a short sleeve shirt and my house is 57° F. Our electrical and natural gas bills are too expensive in Canada to keep a warm house.
Same! When I get cold I put on a jumper!
...that's the temperature *outside* my house. Which is actually quite nice in december. But I'd never be able to live like that being so cold inside
It is MINUS 17 outside of my house right now. We regularly get MINUS 25 to MINUS 35 from January to March. When entering a house at 14 C / 57 F , it feels like a heat wave.
As a supermarket van driver, I use one of these on a daily basis. It's very effective at heating food if insulated (I use my backpack) and I use it for 15-20 mins to heat up my dinner, not to keep it warm for long periods. Good morale booster in the winter months.
"Good Morale booster in the winter months" Kind of like a pint bottle of Jack Daniels :)
But not while your driving. . . .
@@dusterdude238 do you know any good driving whiskies? Lol
@@MongooseTacticool no can't say I do HA HA
The warnings didn't say we are prohibited to put it into a standard convection oven (to give it a head start, of course.)
It'll work. The lunch box will become a lunch blanket, but the food will be heated. After you peel off the melted plastic.
If you hit a truck stop they sell crock pots for 12v. Actually they sell all kinds of ways to cook or heat food. Usually here in nothdemerica they are 110v/12v DC I'm sure they sell same thing for the UK 220v. I used to work construction in Las Vegas, and Mexican crew would fire up a couple hot plates, a worker would cut out from work about half hour or so before lunch his wife would show up with food and they would fry shells up right on the spot. Each guy would toss 4 or 5 bucks in hat every day. They ate well.
i lobe mexicman workr
yup, I remember those days of cooking with a hot lunchbox, they always got you with the foil pans that had to be used
Once I pulled up to a job site in my concrete mixer truck it was in a upscale area and the home owner was really upset it seems the Mexican crew had built a fire in one of his decorative urns and was cooking burritos on a piece of sheet metal on top of it and it had cracked the urn he said it was like 500 bucks to replace it ! I had to stifle a laugh that they had been that stupid to do that at that mans house !
I've walked threw a gem show and swap where every Spanish and Asian stand had a hot plate and burner.
That sounds awesome.
Is anyone else sad that it isn't heating the food by direct electrical current?
@pmailkeey
Glory to you and your house.
Like the 1960's hotdog cooker? I remember the school library having one of 60's project books where you could make one from nails and line cord.
I checked that book out from the library over and over! Every project used batteries and called for 25' of bell wire as I recall, EXCEPT the hot dog cooker. It was just a board with two nails and a lamp cord and plug, with each lead wrapped around a nail as it was pounded into the wood.
I don't recall a single safety warning.
I never built that one. That might be partially why I'm still here.
The company that became Sony had a conductivity based rice cooker as one if its first products.
Damn I am happy to hear those mouth noise
You said you are wary of keeping rice too long under warm conditions. It wasn't the rice that got ya, it was the fish!
Finally someone who says they wear more layers for warmth, I was brought up on that, but it does make me very sensitive when I go somewhere with the heating on, like a shop etc
I pretty much do the same, it's the smart way to go about it really. When I expect visitors for a significant portion of the day I'll raise the temperature in the living room a bit, not above 18C though. The only times I go above that are the rare times when elderly people like my granny are here, but strategic chair placement near the heat sources and away from drafts can help a lot there as well.
This is different when it’s 100f out.
Oh my. It still works after your gentle touch. Amazing and well done.
LOL you just jarred a memory to my little brain , we would go out hunting for years and put food on wrapped in tin foil on a 235 chev 6 cyl manifold , worked real well ! Hot lunch always after first hunt of morning ! when driving 40 miles to hunt area you could cook just about anything you wished! next to head and exhaust manifold you could cook, next to the intake and exhaust you could warm above 180 normally , worked so good for years never packed a lunch hunting !
8°C !!! I thought I kept my apartment cold at 20°C during the day and 17° during the night. In winter anyway. I do resist heating at least until day temperature inside drop to 17°.
Indeed, my train of thoughts exactly. I'd say invest in a electric room heater, so that the one room is at a good temperature, and the rest can be at the slightly lower temperature.
Or even better, just have the heating set to automatically click on whenever the temperature falls below 18'C - which is what I do.
There's no way I could be living permanently in an environment as cold as 8'C!
Big Clive's temperature preferences reminds me of my friend Allie Moore - she also doesn't mind cold weather very much.
My house is fluctuating at ~15º C, couple degrees up and down. It may go down to 10º for a few days this month or the next, and 5º for a couple hours if that. (Southern Spain).
Here in the states (Florida to be exact) I keep my house at 65* (F) and everyone else has to put on jackets when they enter, I even had a relationship end because she was a tiny little thing, always cold, safe to say not too many people come over haha.
I prefer below 19ºC, but my cats tend to get pissy when i get below that temperature.
Nice to see how simple the inside of this box is! 👍👍
I've been using an electric lunch box that looks completely identical to this one (except it's green). Mine does have a (metal) tray that holds the food, which comes out and can be washed. The plate that gets hot covers the entire bottom of the lunch box (so you can't see any wires) and the screws are on the inside on mine. I had no idea they were this simple.
Work pretty well though. I just keep my food in the fridge (2°C) and then poor it in this thing and plug it in at 9. Either in the car or on my desk, by 12 it's steaming hot (you literally can't eat it straight away because it's too hot). I originally got it for when I was on the road a lot.
Room temperature food took about 40 minutes to get as hot as I like them to be. You need to add a bit of water because it'll evaporate, and things like pasta will absolutely stick to the bottom of the pan if you don't, or don't add enough!
I don't believe it's the rice but rather the meat in that Sushi. When in hot weather, meat decomposes fast.
Fish, actually.
Possibly, but Rice and pasta are high risk foods.
UK reheat spec is 75c internal temperature held for 1 minute and then for hot holding it is above 63c for no longer than 2 hours.
www.nhs.uk/common-health-questions/food-and-diet/can-reheating-rice-cause-food-poisoning/
Combination of the wet warm rice and raw fish allowing the bacteria in the fish to multiply quicker and become dangerous
@@warrmr not true at all
J M which bit isn’t true?
Worries about masticating, talks happily about projectile vomiting.......
It's because a lot of people complain very loudly if there are eating sounds in videos, but strangely few who complain about vomit.
my brother's birthay is in a week and this is a magnificent gift idea. thank you so much
Merry Christmas Clive!! and thanks for your efforts this year :)
Those Haribo strips can also patch a tubeless tire when in a pinch.
I imagine the smaller box inside is for stuff you might want to keep cold, so you remove that before plugging it in.
I would prefer 2 containers. I guess one could buy 2 bento boxes, and use the little container from the extra box so the lunchbox would stay clean.
I was wondering the same thing. However, in one video I watched, when they opened the lid after the warming process, the little plastic container was still in the heated part, holding a second type of food. I got one of these as a gift and nothing is said as to whether the small plastic container can be heated or not.
Gorgeous pink colour Clive. Merry Hogmanay Clive and thanks for all the fun and education
Could be quite handy if you use a pickling compound that requires heating to get the best out of. Many other uses come to mind and it's a surprisingly safe, simple unit with which nothing can go wrong that couldn't be easily fixed. Thanks for another enlightening video Clive.
"My First Germ Growing Lab"
I use one of these as a warming bath for my polymer clay, mine keeps the water at around 45-48C which is perfect for the material I use
I have been contemplating getting one of these for a while. Seems like it would be very usefull in work or outdoors/travelling
You probably heard this before but I exclusively watch you because of your accent, it's so relaxing to listen to!
I saw your PCB videos recently and was thinking that you already have 90% of the materials needed to do a solder-mask as well. The UV sensitive solder mask resin goes for maybe $1 a tube, and mixing red and white could get you a pink if you so wanted.
Thinking outside the bento box, I imagine this'd be great for folks who do their own retr0briting work as I believe the optimal temperature for immersion is between 50-60 degrees celsius. The fact its so simple and uses an IEC connector just completely wins me over.
Also etching PCBs? Anything else where a barely warm water bath is a great idea?
@@SianaGearz Possibly sous vide cooking for the daring and adventurous?
god, at that temp in your humble adobe i’m surprised that electrical things have not failed in it more often
I have one of these, but mine has a stainless steel pan that goes inside it. I use mine on a construction site. It works great, takes about an hour to heat the food to the point of burning when in sub zero temps. I love it!
You keep your place at 8°C ? Clive is my favorite non-living UA-camr.
It's good for developing brown fat, which adds to your BMR and therefore helps maintain a "healthy weight" whatever that is.
and here i am struggeling to get comfortable at 18° C...i would freeze my arse of in clives house!
Cold bloodied?
Lizard people confirmed...
@@ssrami cold blooded means they cant regulate body temp so they cant live in cold
Pretty good Dutch pronunciation :) Groetjes from a Luxembourger in the Netherlands :')
The compartment design is to stop the juice from being soaked up by rice and thus making the rice soggy.
I just ordered one for my wife who travels a lot, she will be so happy!
The type of plastic is very important for something like this... I hope it is safe...
It says it's polypropylene on it. Honestly haven't seen a single report of Chinese PP being dodgy so far, and it sure looks and sounds like PP, don't think they substituted something else. Almost all use of PP is in food containers so it is probably generally manufactured to a fairly high standard.
There is no such thing as plastic known to be food safe at high temperatures, only plastics not known to be unsafe at high temperatures. Most of them leach things into food when you heat them. Including PP. Case in point: www.toxicswatch.org/2008/11/toxic-leaching-from-polypropylene.html
@@eblackbrook Curiously both compounds discovered are not PP constituents, decay products, or chemical byproducts, but deliberate additives. One of them was clearly added specifically because of medical use, and it's likely to be pretty poisonous, and another on the surface used because it's an extruded, not moulded product, and will wash out and besides is likely fairly safe. Still curious what else can be found in PP products.
Still i'm not sure it's a priority. I mean people are putting copious amounts of junk food and drink in their bodies, and considerable amount of natural contaminants such as arsenic compounds, and consuming alcohol and tobacco and they panic over a trace amount of plastic and stuff.
@@SianaGearz Polypropylene is not even close to being primarily used for food containers. It's used for almost everything where the shell must endure heat and/or mechanical stress. Almost all of my tools have polypropylene shells. The switch boxes I picked up rewiring this house are polypropylene, the light boxes are polypropylene mixed with fiberglass. My computer monitor has a polypropylene shell under a thin clear layer of acrylic. My keyboard has a polypropylene shell. The bottom half of my mouse is polypropylene, top is some exotic blend with a very long chemical name. The ash tray on my desk is even made from that stuff. Probably more a case of it's so safe to use because it's used for so many things that the process has become highly refined.
@@eideticex Don't they make anything from ABS anymore?
I would really like to see how are electric blankets (and their timer/regulator) constructed. It would be interesting to see how do they keep them safe, if at all!
The ones I've explored use a triac based circuit to regulate the temperature, so basically just a dimmer running the heating element, and an LM386 based timer for the auto off function. The annoyance I have with them is the fuses they use, in the ones I have taken apart they used a 2A non replaceable fuse, and the unit draws about 1.9A. Needless to say those fuses don't last too long, and in fact the electric blanket that I'm currently lying under has had its fuse replaced with a wire link after several times of replacing it. Not very safe, but at least I don't have to replace that damn fuse every 6 months now.
Mine (from LIDL) doesn't seem to be isolated at all. Not that I sleep with a knife, but I find it pretty scary.
Modern ones seem very safe to me. The heating wire seems to be PTC, because they don't overheat even if you bunch them up or cover them.
@@IvanStepaniuk Same here, the one I have just has a heating element that is of such a low power that it won't pose any hazard if left on for a long time.
I use mine to heat the bed and switch it before getting in.
Definitely an interesting item! I could see the 12v being useful for long haul truckers or camping or even road trips. Don't know how much I'd use it otherwise though as microwaves are just about everywhere.
Clive what a refreshing change to hear someone pronounce liquorice properly!! Just one of my pet hates!! 😂😂
quite addictive that trekdrop (literal translation "pull licorice")
Thanks for the translation. HARIBO products are fairly ubiquitous where I live but I've never seen trekdrop before. I want some.
Your example made me laugh! Rather than eat it himself, here, my brother can spend the next hour and a half with his head in the toilet 😂
Managed to get one in black so useful on the road paired with an inverter
My place is about 90 degrees right now if I'm to believe the thermometer.
When I worked in a shipyard as an electrician, we had a box with heater strips used to anneal ship hull welds. Worked very well to heat the whole crew's lunch.
4 years ago I spent 9 days in hospital because of food poisoning. Stomach and kidney infection really suck. They ran 2 different antibiotics thru me every minute I was there, until the morning of my discharge. Then I still took almost a year to fully recover. Be careful of how your food is prepared and kept.
botulinum toxin?
@@izimsi they never told me.
@@izimsi kidney infection sounds like pathogenic E. coli
The Dutch and their Drop. Never seen so much licorice - I like the soft salty ones.
Martin D A A lot of us love it lol Don’t know why, but it’s pretty nice
Salmiaki for the win!
We even have a "licorice-border" in the middle of Germany. The North loves it, the southern half not as much :P And the further you go North the more prevalent it gets...
[btw Haribo is a German company. I just wanted to mention that because I already had a discussion with Danes on UA-cam who insisted that Haribo was Danish :P ]
the belgians are better as they often don't puff it out with wheat, which i cannot eat :o
Visit Scandinavia and have your mind blown.
Thank you, very informative!
I just received the 12 Volt version of this in white and blue... works perfectly, like the mains powered one Clive reviewed.
Filled with water, it reached 120F after an hour. I got the 12 Volt version because I plan to use it when camping where I will only have a 12 Volt portable power pack.
I think its probably made by Weller, it has no Fuse / Thermal Fuse for the Mains :-D
thats such a huge shitstorm 😁
dwddn 😄👍
I just like how there was a double insulation Square on the bottom label of the unit.
Who where they trying to kid.
...... There's a fuse in the plug, in a well designed plug ;)
@@andrewwaters2354 Not in this Plug ;-)
8 degrees Celcius room temperature... well at least your beers are cold, Iceman
I have something similar to this. It's flexible with a solid heating plate. It works wonders. It actually gets hot enough you can cook in it too.
I know it's a year late, but there seemed to be three different slots to put that neon into, and two symbols I couldn't quite make out to the sides of the "I'm eating current" one in the middle. Might there be other models with more guts to them?
The moulding where the neon lives seems designed for three indicators (and has light barriers to limit spill). Maybe the "deluxe" versions of this have all the front panel icons individually illuminated? It would seem an unnecessary degree of complexity for just the one "power" neon.
Maybe the 12V version requires 2-3 LEDs to adequately illuminate the power indicator.
When eating something of questionable food poisoning risk, I find chasing it with a shot of vodka or such to be helpful. Anything that immediately makes me wonder if I've made an error, I take the shot, prophylactically.
Yeah, I do that too these days.
@@bigclivedotcom It's what I tell my doctor if he asks if I'm an alcoholic: "No sir, I just eat a lot of questionable food and don't want it poisoning me."
thats why i always keep a flask of vodka with me at all times
"We are professional electrical people" should be on a T-Shirt... I would buy it!
Your hands are looking well moisturised for the cold weather 👍👍👍👌
My hands are in surprisingly good condition right now. No obvious cuts or abrasions. I've clearly not been working hard enough.
It does look to me like an invitation to food poisoning: too warm to suppress bacterial growth, not warm enough to kill them.
Holding food at a warm temperature is the problem. Heating it from cold up to 55C then eating it is fine.
Thats why it says “forbid heating the food for long time”.
I would think you would put it in the in fridge (not freezer) when you get to work, if your workplace does not have employee's fridges then your unlikely to bring in lunch food that need refrigeration.
It's generally considered safe if the food is in the danger zone for under one hour. The danger zone being 40F to 140F or 4C to 60C.
I agree. For safe reheating, the food should reach 84 degrees C throughout for one minute. Any lower heat doesn't guarantee killing all non spore forming bacteria.
60 C is a safe temperature as much as I remember. It's surprisingly well built. They did a nice job on this one. You too, of course. Thanks Clive, thanks for the info. Who knows, it may turn out to be useful one day.
Bacillus cereus ( the bacteria that mainly effects rice ) is a spore forming bacteria will need to be heated to 131 degrees c to destroy all the spores . this thing is probably the best for rice .
I use something similar but has a metal interior and runs in my lorry, fab bit of kit, make the meals in foil containers like from the takeaway then stick it in, wouldn’t be without it
Two bits. One, another of my favorite youtube folks is in your region, and they where just doing a video showing off the lights you put up. VERY nice this year.
Two. I don't think it's the rice that went bad, quite likely it was the fish that went off.
If you're talking about the Glasgow lights I've not done them for about 4 or 5 years now.
Guess that makes me about 7 years behind. Figures.
I second the rice versus fish. Cooked rice can go bad but most other ingredients usually go bad way faster.
@@bigclivedotcom I assumed that he was referring to the Kryptonite lights you did 3 weeks ago. I really enjoyed them.
@@ICountFrom0 The ones I used to put up were the original colourful and heavily animated 3D lights. I've not been involved in the new static, flat white panels.
A food poisoning story involving someone named Ralph. Heh.
I bought one of these, but its slightly different. Externally they are the same. Internally, it comes with a removable steel bowl/plate, and that little soup bowl thing. Why this one is plastic... I don't know. It would just take longer to heat the contents. That aside I got the combo unit (12v/120v) but I wonder if it has 2 sets of heating elements for the different voltages. The Heat times your quoting is quite long, and a lot of it also depends if you kept it covered or not (I didn't quite hear if you said you did or not). There is a lot of thermal loss as you mention. I did however cut down the time significantly by using an old bubble pack envelope and shoving the whole thing inside. It actually makes a decent grilled cheese sandwich.
Nice little incubator.
Hmmm heating food inside a plastic container made of shady chinese plastic.
That's what I was thinking, we need a chemistry geek to test this.
At least it's not American.
Is there really a practical way to establish the safety of plastic? I always figured you either found type markings or had to guess - and identifying individual additives seems pretty much impossible.
@@Khrrck The type marking is PP, and it looks and sounds like they haven't subsituted it with something else. I have not heard of a single case so far where chinese PP has been found to be poisonous, though i guess anything can happen. The thing with PP is that it doesn't need any additives to function.
Do you ever get hot takeaways in plastic containers? Where do you think they're made?
8°C !! I'm guessing you live on your own Clive. 😉
Would not mind seeing inside the elements. Good vid Clive :)
You are one of the few people who say " liquorice" correctly.
The failure mode of those ptc slabs is cracking. Then one piece might not make as good a contact and you lose heat output. This is the way most of my hot glue guns died
Abuse of this for a heated waterbath type arrangement? Like to accelerate circuit board etching. Obviously don't mix that with food use!
Of course, for hot food at work we have this technological marvel called a microwave which is very efficent at making cold things hotter. Of course, we then stagger our lunch breaks so there isn't a queue, and having two in the office helps.
"very efficient" - Ahem, no. Only about 50 % or so, plug-to-magnetron-to-cup, versus about 60 % or so, plug-to-ceramic-hob-to-pot. (I would love to link sources but the YT demons keep censoring me.)
Sources: www.physicsforums.com/threads/how-efficient-is-a-microwave-oven.96192/ and www.confusedaboutenergy.co.uk/index.php/buying-household-appliances/85-cookers/118-cookers (see comment section) and www.wolframalpha.com/input/?i=(0.473+kg+*+82+%CE%94K+*+4.19+KJ%2F%CE%94K%2Fkg)%2F(1.5+min+*+3+kW)
@@Anvilshock you are missing the point. It's far more time efficient as a microwave can heat something up in 3 minutes and one of these boxes takes 20 times that long. If you compare the price of electricity to the cost of employing someone it's negligible for anything under about 10kW. I'm not talking pay per hour either I'm talking overheads. EG if there is a really long queue for everything at lunch you have to make the lunch break longer and that costs money.
@@gordonlawrence4749 There is no point to miss. I simply gave hard numbers on bringing water to a boil to relativise the statement of "a microwave [...] is very efficient at making cold things hotter". I do grant that there are other factors that play into the perceived efficiency of a science oven(TM), such as the convenience of heating food on the plate you eat from, etc., but I also never contested that. That said, I doubt that the time efficiency you describe really is a thing. After all, a microwave oven still ends up being observed because it's difficult to be productive in the few minutes it takes to heat your meal, and everyone must share it, piling up lots of little bits of unproductivity. This bento box is unlikely to be shared at all, and nobody prevents you from doing work in the time it heats up, so plug it in at 11 and keep working to grab a spoon at 12 and dig in, snickering at your colleagues that queue in front of the food radar.
@@Anvilshock Nope. They did not specifically state electrical efficiency so restricting an analysis to electrical efficiency is missing all the other points all together.
I have something similar to this but from a reputable company. I keep mine in an insulated lunch bag, while it warms up the food.
The PTC lasts very very long. If it fails, it stays full on.
It's used in large coffee containers to keep the coffee warm.
I like how Clive think's that the Haribo is licorice, when in fact it is clearly just rubber. :P
It looks like the insulation strips around my car doors.
This is definitely licorice themed gummy stuff.
Haha, yeah the stuff definitely has the look and feel of a door rubber. But it's fun and tasty stuff.
@@bigclivedotcom Would this work as temporary weatherstripping in an emergency?
Dont You think the problem with the sushi was more the raw fish than the Rice? :D
BurningSpooon
Look up bacillus cereus. You may be surprised.
As long as it is fresh I don't think there is much issue but I'm no food scientist
Might be a daft question but do your dehumidifiers work ok at 8 degrees? Mine goes onto the frost protection setting quite easily if it's not warm in the room.
I use compressor dehumidifiers in summer and desiccant drum dehumidifiers in winter. They operate down to zero.
I found this and figured I would say something the reason the vent is there is for proper ventilation of steam whenever you cook something and as it is cooling it needs to be uncovered the buildup of condensation on the inside of the container can hold foodborne illnesses so the container needs to stay vented until it's cool to the touch
Ahh, say hello to mister salmonella...
ミスターサルモネラはナンバーワンの浴室の時間!!!
I think 140F/60C is what health inspectors require for hot food bars at restaurants.
I thought it was 80c
yeah it is mate 60c or hotter
That’s for keeping food hot for a longer period.
@@phonotical Cook to 80ish; store at 63ish
Depends what you're cooking.
140f will give you a medium steak, 165f for chicken & well done steak.
212f for 5 minutes to pasteurize soups & sauces.
Finally a manufacturer in China who actually watches this channel!
They're close to a dish washer safe interior design, and the double wall effect probably helps with convective heating of the sides and acting as insulation.
Your experience with warm sushi suggests your name ought to be Ralf as well...
Bruce Goatly keeping rice/ noodles warm wasn't the issue...Keeping raw, or mostly raw fish at a low warmth environment was. Think of this as a consumer level Petri dish.
Or Huey.
@@prismstudios001 I think you missed my point. But it wasn't an important one, anyway...
Hmmm, shades of Cheech and Chong there....
@@Nilguiri yelling to Ralph Hughey and Herbert down the great white telephone. Done that a few times when I was younger.
Hi Buigclive, I have recently purchased a Chinese external aquarium heater that I think you might be interested in. I know it is not your thing, but for what I have paid for it the technology involved probably makes it the most advanced heater on the market, and all for under £20!
I have pulled apart and taken some photos but needed to get it hooked up so have not explored it fully - and there are some questions still left to answer (things like, is the heater element thin film?, why are there 6 wires disappearing under the insulation? amongst other things..
If you want to check it out, give me a shout!
Good for keeping the ferric chloride warmed and etching small project PCBs?
Just purchased a pink one for 8.79GBP delivered in 5 days (in the UK), thanks Clive. I searched for "Portable Electric Heated Lunch Box Compact Heating Food Warmer Travel Camping UK" on ebay UK
They might mean Dish Disinfector, which use a UV light and heat to sanitize dishes.
Not just UV but also food industry sanitizers, which are available for consumer use. The stuff I'm referring to is generally sold with "quat" somewhere in the name and gets too base or too acidic if you let it get too cold or hot. Does terrible things to plastic and skin.
I took it as Chenglish for dishwasher. So now it's a plastic thing that holds food in the bacteria thermal danger zone that can't be well cleaned.
@@tactileslut there are plenty of ways to disinfect things without putting them into a dishwasher.
It's 40C/104F here today in nortern NSW Aust so no real need for heated lunch box. A slab of concrete would be more effective than your lunch box. 😎
I'm not sure I could handle a hot environment like that.
Lol better than it better ball shrink cold 🥶
Wouldn't it be beneficial to place insulation between heating elements and bottom part ?
My grandfather used to do this with the heating vents in his (original) VW Beetle, which used to blast out hot air around your feet. He would prepare jars of rice pudding and at an appropriate time take one out of his briefcase and pop it down by his feet. He was an Insurance Adjuster and drove around the UK a lot, so he knew just the right places to do this so that his snack would be ready when he arrived at a motorway service station to eat it safely.
Bear in mind that this was in the time before safety-belts, when he was in the habit of starting off a trip by driving his car slowly and carefully up their road steering with his knees while stoking up his pipe with both hands…oh, and he was from Stirling: such a lovely man, I only had him around for 10 years and we all miss him who knew him.
Maybe putting it in the freezer is not recommended because that might cause water to condense inside, and water + electricity = not good
Also, the condensed water might crystallise and break all the small sensitive electrical components inside
That is likely too but a PTC when really cold can explode when attached to the mains at say -30C instead of +10C. It makes a massive difference. For example at running temperature the PTC is at about 1300R. At -30C that could be as low as 60R which would give you about 800W and not enough current to blow the fuse (which it has not got). 900W in something that size is going to get mighty toasty mighty quick and dependant on exact type of PTC the thermal lag will be enough for it to melt the solder at least.
Thanks for making it into a math(s) problem. It made for an interesting read. I enjoyed it.
With those quantities of water you'd probably just boil it off before too much happened. Water and electricity aren't as bad as many people think, it's just easier to get the safety message across by oversimplifying things. Have a look at Electroboom's videos, he does a few where he sticks his hand in water with mains voltage - interesting stuff.
@@Berkeloid0 That's true. I walked through knee-deep water to turn off my furnace. The breaker box and the underwater appliances had a potential of 240 VAC, but luckily I only got a moderate tingling sensation in my legs and nether regions.
Yeah, we from Holland are so, how to say it? trained or tangled up in the English trade language that we don't even see it there is English or dutch on packages anymore, we read it as if we read our native tongue. A lot of companies use that so there slogans rhyme and sound better then in Dutch.
when I need a word to describe something while talking I sometimes don't come up with the Dutch word but with the English word for it first :)
Too true
English is often used for branding in Asia as well. Sometimes the meaning is not the most important thing, so the text can be quite hilarious!
here they use correct english :)
Most slow cookers hover just below the simmer point(85-95c), 70c is about the absolute minimum. A bacterial incubator runs between 23 and 70c.
Earlier this year, our local food standards had a purge on takaways using pre and re-heated rice. Never realised how close rice is to really being a bag of worms... also don't forget noodles, right across asia noodles are a real treat. In summer temps typically 35-45c, Winter could drop to -25 but they still shoot for above 25c in the nicer offices. When I was in india everyone in the building had a tiffin box delivered every day.... the scutters were just part of everyday life ... never got food poisoning, just had "active digestion". In China we used the street food stalls which were some of the best snap I've ever eaten and cost about 0.50p-£1.50 a day. Never had anything untoward in china, nothing could survive more than 2 seconds in a wok.
I wonder if the china yoghurt maker is the same at 40C it would be interesting to see if it stays at 40c for a long time Yoghurt take 12 hours?
Having recently become a 'mainly outdoors' worker, I'm seriously considering getting one for the van. But I'm worried I'll get the cables all tangled up; already got a laptop and toughbook charger, dashcam, Tomtom, voltmeter/USB socket combo etc... Need a bigger van I think!! :-))
Would it be feasible to operate (the 12V version) without the bottom screws inserted? Then one could take out the internal tray and throw it in the dishwasher; the corners of the internal tray must be difficult to clean otherwise - I wouldn't like to see one which the 'typical' driver has been using for some time!! :-/
I wouldn't really recommend separating it regularly unless the aluminium plate was fastened in place.
@Steve AtTheVan It's just 3Ah for one hour of heating. That should be fine with any battery.
Some cars cut out the 12v supply when the car shuts down.
Do it, it saves a lot of money on takeaways and pastys etc.
In a van, I'd add an additional battery with a cutout switch. (there are premade ones out there already). That way, you can use it to run things like the crock pot without running down your main battery, and just recharge the secondary battery while driving.
@@CyberlightFG and on some you might be able to move the associated fuse 'a half slot' to make the cig.lighter/accessory socket permanently powered instead of keyed. On some it might be an option setting in the brains - possibly only via dealer software.
Repurpose it as an etching tank...
Trek is from Trekken and means 'to pull'
Holy crap I live in New Orleans and my home never gets cooler than 72 degrees in the summer. How cool do you keep the house on hot days
"HARIBO" stands for "Hans Riegel Bonn" (not kidding)... very creative choice of business name... Your own name plus your city...
rarbi.art just like IKEA
Very cool! It reminds me of Adidas, short for the name "Adi Dassler". They used a waffle iron to make their first rubber soles.
@@-Chunk What is IKEA short for?
@@buddyclem7328 Cheap Furniture and Meatballs
Buddy Clem Ingvar Kamprad Elmtaryd Agunnaryd (Swedish home furnishings retailer; derived from founder's initials and hometown) IKEA.
Nice to keep your newspaper with fish and chips moist. 😁 😁
ROFL that isn't allowed since the 80s or 90s anymore I believe :)
@@maicod They don't use actual newspapers anymore, but they still use the same type of paper. I assume that it has been sanitized somehow. Newsprint has a distinctive smell (soy ink) and I'm sure it doesn't taste the same without it.
ah alright I know the type of paper you mean. It is a bit dirty white eh ? I hope they don't artificially make the paper give of a print ink taste :)) Here in Netherlands we either use cone shaped paper bags with the chips in it and mayonaisse on top (dirty fingers for sure !) or a plastic container with a compartment for mayonaisse and one for the chips. (if EU wants it will be banned soon :((( ) We also eat a similar fish called Lekkerbek (tasty mouth) and is cod with a flour dough surrounding and then fried. What you english don't know (I think) is kibbeling (its just a name) and is the same fish (cod) in the same dough but then fried in bitesize chunks. It is delicious and very popular amongst kids and also grown ups :D
You could put four springs under the plate and around the stand-offs to keep the plate in contact with bottom of the plastic tub.
this thing is food poisoning for days, the hottest it gets is still in the "danger zone"
Bacteria grow most rapidly in the range of temperatures between 40 °F and 140 °F
Isn't the term "bento box" more related to Japan than China?
I think it is, but that's how many of the listings describe these.
Thanks! I was very curious where that term originated from. I was assuming it was a UK thing, but now it makes sense.
It's just bento. And , yes, it's Japanese. But that thing looks nothing like a typical bento. There's also 'maka no uchi' (literally: between the curtains) but that's a mouthful.
its a cheep Chinese product marketed to the Japanese
@@sqike001ton The Japanese would never buy it. They know what real bento is.
It's not made by Weller is it? (No Fuse!)
English is practically a second first language in NL. Lots of ads/marketing campaigns are just in English.
I got it and it is amazing. I used canned meat and it even started boiling . But it depends on ambient temperatures how hot it will heat. I have 12v and 220V version .