Hi Guys , I am a chemical supplier to automotive and laboratory industries. Have been supplying Ammonium Bicarbonate (food grade) to a Catalytic converter company for some time. They have been complaining that when dissolved in water(first step reaction for them), that it foams to much and some of their batches dissolves more easliy and quiker than other. Getting different results using the same batch of product. Any ideas on why this is happening?