Does cds get weaker when i open bottle

Hi, Iv’e made 400ml of 3,000ppm cds and keep it in the fridge, i would like to know if every time i open the bottle to mix it with water (1ml cds per 100ml water) is the strength weakening? btw you’re doing a great job with this forum kind regards david

CDS does not gas off under 50 degrees is my understanding. Pull it out of the frig, open, take what you need, close. Can last for months with very little degradation 

Great thank you