Patent ID: 7915007
Filing Date: 2011-03-29
Classification: G01N

Abstract:
1. A method of fixing a biological material, the method comprising: reacting hexamethylenetetramine and an acid in a composition adjusted to a pH between 3.0 and 7.0 to produce a biological material fixative, wherein the biological material fixative further comprises: 1-15% by weight hexamethylenetetramine; 1-15% by weight citric acid; 1-15% by weight ascorbic acid; 2-15% by weight ethylene glycol; 0.05-5% by weight surfactant; 0.01-1% by weight geraniol; and 0.01-1% by weight citral; and contacting the biological material with the fixative to facilitate consumption of the fixative by the biological material in equilibrium with the fixative, thereby maintaining the biological material in stable condition for analytical or preparative purposes.