Biochemical catalysts; Chemical preparations for scientific purposes, other than for medical or veterinary use; Chemical preparations for testing swimming pool water; Chemical reagents for non-medical purposes; Chemical reagents, other than for medical or veterinary purposes; Chemical test paper; Diagnostic preparations other than for medical or veterinary purposes; Enzyme preparations for the food industry; Enzyme stabilizers; Enzymes for the food industry; Litmus paper; Reagent bearing test...