1 Bases [chemical preparations]; tensio-active agents; test paper, chemical; reagent paper, other than for medical or veterinary purposes; biological preparations, other than for medical or veterinary purposes; diagnostic preparations, other than for medical or veterinary purposes; chemical reagents, other than for medical or veterinary purposes; chemical preparations for scientific purposes, other than for medical or veterinary use; preparations of microorganisms, other than for medical and veterinary use; chemical preparations for analyses in laboratories, other than for medical or veterinary purposes