Patent ID: 6210969
Filing Date: 2001-04-03
Classification: G01N,Y10T

Abstract:
A lytic reagent composition comprising:(a) a polyoxyethylene based surfactant represented by the general formula:R.sub.1 --R.sub.2 --(CH.sub.2 CH.sub.2 O).sub.n --Hwherein R.sub.1 is an alkyl, alkenyl or alkynyl group having 10 to 22 carbon atoms, R.sub.2 is --O-- or --COO--, and n is between 20 and 35;(b) a quaternary ammonium salt, represented by following molecular structure: ##STR8##wherein R.sub.1 is an alkyl, alkenyl or alkynyl group having 14 carbon atoms; R.sub.2, R.sub.3 and R.sub.4 are alkyl groups having 1 to 4 carbon atoms and X.sup.- is chloride or bromide anions; and(c) an acid to adjust pH of the reagent composition from about 1.7 to about 2.4.