Further conditions and additives such as for example detergents (e.g. taurodeoxycholate, sodium deoxycholate, polydocanol), substances with bactericidal or fungicidal effect (sodium azide, methyl-iso-thiazolone etc.), stabilizers (e.g. DMSO), cofactors, emulsifiers (e.g. propanol), activators or measures to avoid undesired (side)reactions for the lipase determination are known to a person skilled