DiFluid R2 Extract: How To Use A Coffee Refractometer Properly!
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- Опубліковано 30 чер 2024
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@LanceHedrick Refractometer Showdown: • ULTIMATE COFFEE REFRAC...
Rohan's Blog Post: pocketsciencecoffee.com/2022/...
Jonathan Gagne Blog Post: coffeeadastra.com/2019/09/21/...
More R2 data collected by Robert McKeon & Socratic Coffee:
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towardsdatascience.com/coffee...
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Timecodes:
0:00 - Hook
0:14 - Title B Roll
0:39 - Disclaimer
1:54 - Introduction
2:33 - What Is A Refractometer?
4:00 - Design
6:08 - The App
9:01 - Workflow
14:06 - Is The R2 Accurate?
15:54 - Recommendation
16:54 - Conclusion - Розваги
![Does Higher Extraction Make Better Espresso? [Refractometer Tests]](http://i.ytimg.com/vi/TzH75RMwKTM/mqdefault.jpg)
![Does Higher Extraction Make Better Espresso? [Refractometer Tests]](/img/tr.png)
I bought and used the R2 before watching this video. What has been presented is entertaining and informative. Excellent work without getting too bogged down in the science of the fancy tool.
Were you to release no other videos for a month, this one alone would have still justified my Patreon contribution. Fabulous (and hysterical) work!
Thank you so much for your support. We know it's been a little quiet on Patreon and we definitely plan to change that soon.
Calibration (zeroing) should be done wit brewing watter. Not distiled as mentioned in video. Reason is that brewing water is 0.00% TDS and coffee drink is that brewing watter (whatever you use) + dissolved solids from coffee. And we are looking for what that number is. We are not looking for distiled being zero becuse than we would have minerals used in brewing watter + coffee in our final measurement. Cheers!
I wonder if the meter takes this into account since you select the substance you want to measure e.g. coffee which has its own refractive index. I zero’d my meter with RO water and then measured some mineralized water and the TDS for both is reading 0.00 🤔 pls send help
I just brewed myself a cup and you dropped some brain food while drinking it.
I'm not planning on buying a refractometer in the near future but this video was really interesting. I liked your light humor with all the pain in measurement. Made the video feel very personal. I felt very directly addressed which I really liked. Thanks for that
I was the product manager for the R2 Extract, so watching this video was so fun 🤣Very well done video
fantastic (and entertaining) content as always. so clear, concise, and helpful. and gave me the confidence to purchase on of these! thanks :)
Bloody entertaining one! Way to go with the content lately. Absolutely love it.
I may never wish to purchase a refractometer for home use, but this incredibly thorough, and at the same time approachable/humorous, explanation is one for the ages! And helps interpreting as a home user when various online creators include this information in their videos. Also makes it important to assess the workflow these creators use, as bad data in leads to bad data out, and if you are fastidious, likely makes conclusions made by refractometers more misleading than helpful. Many thanks for the high quality video!
loving your videos so much! thank you buddy!
Thanks for simplifying this process for someone who is still new at this. Also, I love humor!
Great review & breakdown of the mechanics. 👌
I am interested in getting one. Thanks for the video and love your humor as well!
Just got an R2 and have 0 idea of how to use it, thanks for the guidance
Hopefully you won't be sending it back after seeing the workflow. Haha
I came to this video thinking “Maybe I’ll get a refractometer”. I left it thinking “I won’t get a refractometer”.
Haha good choice. Just enjoy your coffee and trust your palate. :)
I found your channel through the guest video on Hoff and I gotta say I love your approach and dry humor.
Such wonderful bits of fun wrapped around discussion of a complex tool. I don't think I'd ever use a refractometer at home -- I have very little hair left to lose -- but you've taught me a great deal about how to use one, while entertaining me at the same time.
Now I'll go overheat some milk.
Nice to see a reasonably priced refractometer that's reliable enough. That being said, I won't worry about measuring TDS until I can scan a cup of coffee like a QR code lol
The speed of light is always the same 'c' as in 'E = mc^2', but the photons are making more side-seeing trips as they are being scattered around (~ refractive index) ;) Never thought I would get this much into coffee and physics. Thanks for the exercise!
Good video, not too long but informative. Also inserted a bit of humor in an otherwise “dry” topic.
Loved the video and the links. A year later, how have you been getting on with the R2?
I really appreciate your presentation!
😆🤌❤️
I'm Loving my R2 - I've lost a few hairs but I think it's worth it.
Another excellent informative vlog - UR definitely picking a great balance with all your info Vlogs - yes I love Lance Hedricks vlogs but sometimes there is just too much info to take in 🤯
Thanks 😀
Great video. I’ve yet to scamper down this particular branch of the coffee rabbit hole, but I do have a question:
While zeroing with distilled water makes sense (it's zero TDS), wouldn't zeroing with your brew water give more accurate results, like Taring a scale? I'm guessing the detected difference in refraction will be skewed by the dissolved solids already in the brew water. i.e. you'll measure an inaccurate, higher extraction yield regardless of the actual total dissolved coffee if the brew water’s dissolved content is not first discounted.
This helps for looking at posts about coffee with refractometer data. I am not going to spend money and time on this, but this could be aimed at home roaster. One day I might buy a hive roaster and this data would be relevant then, but money and time to gather it seems diminishing returns to do for mere individual.
Why we should zeroing with distilled water and not the same water we make the coffee from so we can get accurate TDS .
We make zeroing from the same water we make coffee from .
Was looking at getting an Atago recently, but for home use I couldn’t really justify it. But I just ordered an R2 now, I think it’s the perfect price point, I’m not concerning about 100% accuracy just want some reliable feedback on my brews to help guide me a little better than just taste alone. Thanks for this very well put together video
Very good video. I am already bald, so I guess that cuts down the stress level. I wanted to say I really like the Sofi Brewer makes a great coffee and looks good on my coffee bar.
Thanks. I am on the fence about this since seeing Lance’s video. I am also wondering what tool would be more useful, this or a color meter like the Difluid Omni (or Lighttells CM-200). I just started home roasting a couple weeks ago.
Thank you. You just saved me $200 :)
This dude w the dope glasses, just out Hoffman'd Hoffman at his own game. Bzzaanng!
can you please list all equipments used and where to buy all these it will be helpful
Question: how often do you have to calibrate the r2? If the battery discharges completely, do you have to recalibrate?
Great review!
I love how he rests his hands on the table. I imagine him having very short arms. Btw. Great video!
Lol, the challenges of working in a small studio space and trying to fit both me and the table top in the frame while simultaneously avoiding distracting elements in the background. It’s a lot better in our latest video. :) Thanks for stopping by.
About that glitch you mention: I haven't experienced it myself, but, I have found that when I'm testing and being sloppy with button presses, it is incredibly easy to mistakenly trigger the "zero" function on the unit instead of testing, so your hunch is most likely correct. I enjoy using this device but it is far too easy to make it start zeroing, which isn't ideal if you're testing your first coffee of the day and have to rush to empty and clean the sample dish so it doesn't register liquid before zeroing!
It seems like this is a fairly easy software fix. I wonder if DiFluid has addressed it.
informative, entertaining and funny. Just how a product video should be. thank you. Btw I lost my hairline already due to other things in life, so I do not worry too much :D
Thanks a lot for this great tutorial, now I'm losing my hair with you (I'm using my new R2 ) !
1st video of the this month and also of this year!
Did you end up reviewing their scale ?
I already lost a fair amount of hair with the R2 and I don’t even have it yet. It’s lost somewhere in the postal network when my order landed in my country in December. 😂
I think the toaster guessing before the data would be a fun game though. The rest is a bridge too far for home setting. Do aspire to home roasting if I live long enough to get to it
When doing your four readings, are you using fresh samples (With or without re-calibration in between?) or are you simply just running the test 4 times consecutively through the device/app with the same original sample still on the lens?
On the same sample. It’s just to ensure any fluctuations have settled down.
@@aramseTo be clear, you are just pressing the button again to allow the R2 to check the sample again, correct?
Do you need to calibrate it every time ?
Is the alcohol necessary?
Now imagine doing this for 5 units and finding nothing fun XD
I also didn't have the annoying negative or randomness you did. I wonder if that's one of the quirks of the current app version?
You look like Biswa?
Cool video. Watched the whole thing 😅😊. I have 2 x R2s unopened. Who wants em?
How much are you selling em? I'll take one