Is it normal for formalin so produce foam when transferred from one ti another package
A while ago i purchased 25kg gallon of formalin. It didn’t have any foam( or i hadn’t noticed) and upon opening the cap it had very noticeable smell.
Yesterday i purchased 10kg formalin again but this new formalin had weaker smell than previous one and when i added it to the previous 25kg gallon it created some foam.
One of these gallons was water gallon and another was from benzyl alcohol dehydroacetic acid preservative that i purchased in the past. These gallons were never used for anything else.
question: is it normal for formalin to produce some foam when transferred to another package?
whick one is better? The one with strong or weaker smell?
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