Use
Ammonium bisulphite is a solution grade fertilizer,
available commercially as a 55 to 60% solution. It is
made by absorbing sulphur dioxide (obtained as a byproduct
from smelting operations) in aqueous ammonia
solution. This non-pressurized solution provides both
sulphur and nitrogen. It has a salt-out temperature of 0°C.
Ammonium bisulphite is compatible with liquid
fertilizers, such as aqueous ammonia and polyphosphate
solutions, and can be stored in containers made of steel,
aluminum or plastic.