I hv seen lot of video to understand the safety and how to work in lab, But ur video is very helpful and breafly described Thank you very much pls update more videos.
I was taught NEVER to put excess chemical back into storage from the spatula /spoonula. Even if it's "clean", it may have something on it or react with the chemical. Over time, this can contaminate a bottle even if it "shouldn't".
But you have your mission and no one to bother you and time fly's. I'm 35 and doing keto and feeling I could give up my Saturdays and my tax check for two years and get into something that would age you slowly. After work, head right to the slops.