Patent ID: 6846678
Filing Date: 2005-01-25
Classification: G01N,Y10T

Abstract:
1. A buffer formulation consisting essentially of: (a) benzethonium chloride; (b) a buffering agent selected from the group consisting of sodium phosphate, potassium phosphate, potassium acid phthalate, sodium carbonate, sodium bicarbonate, 2-[N-cyclohexylamino]ethanesulfonic acid, N-[2-hydroxyethyl]piperazine-N′-[2-ethanesulfonic acid], and mixtures thereof; (c) sodium chloride; and (d) water, as a solution that exhibits a decrease in pH of about 0.1 units or less and no perceptible precipitate when subjected to 15-35 kGy gamma irradiation.