配方类型:

MATERIALS OF CONSTRUCTION

配方说明:

Acoustical Plaster (U.S. Patent 2,485,259)

配方组成:

Soap/0.25
Asbestos Fiber/60
Crushed Graded Pumice/480
alkali-Digested Protein/1.25
Gum Ghatti/1.25
Wood Fiber/18
Plaster of Paris/225

配制方法:

The ingredients are mixed well and water is stirred in before use.