> Generally when a 37% concentration is stated on the label of a chemical
> solution it means 370 g/L. If you use that rate for formalin (formaldehyde)
> you will end up with a different dose rate than at 996.8 g/L, which can be
> very critical, as you could end up overdosing with disastrous results.
Don't forget too that if there is any precipitate in the bottom of the jar
your concentration has lowered. The precip is white and highly toxic, never
add it to an aquarium to treat fish. Hence don't shake your bottle up first.
Keep it in the dark, it tends to precip. quicker in light.
Tootles
Peter Unmack