How to check for bacterial contamination using H2S kit?

[@sre88]

Should we open the cap to allow bacteria to get oxygen from atm ??

[@theinflationsituation8870]

Thank you!!

[@XYZ-pe1ii]

Merko ye janna h ki isme incubator ki jarurat nhi h kya

[@lukejalal3168]

Good test

[@shardulpathak185]

Thank you

[@shahidansari1751]

thanks

[@prabhatpaikra9535]

Water bacteria ke liye medicine?

[@iqbalsingh8211]

Hmare 24-4 8hours bahd to pani kala nhi hua lekan 5days bahd ho giea

[@muhammmadadnan4273]

bro ye kit kahan sy mily gi kindly tell me