Patent ID: 11882823
Assignee: nan
Field: Basic materials chemistry (Chemistry)
Classification: CPC A | IPC A

Claim 6:
7. The method of claim 6, wherein
the heavy metal salt is chromium III chloride having a concentration of 0.03 M in the composition and manganese II chloride having a concentration of 0.02 Molar in the composition;
the saccharide is fructose having a concentration of 2.6 Molar in the composition;
the aqueous buffer is 4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid at a concentration in the composition providing the composition a pH from 7.0 to 7.4;
the aliphatic aldehyde is formaldehyde having a concentration of 0.1 Molar in the composition; and
the preservative is sodium azide having a concentration in the composition of 0.01% (weight/volume).