Organic Impurities Test Set .
Organic Impurities test is a widely used, simple procedure to determine presence of organic compounds in fine aggregates:
The set includes six graduated 8oz (237ml) colorless glass Impurities Test Bottles,
a 1lb (454g) bottle of standard grade Sodium Hydroxide (NaOH) Pellets and a
Color Reference Chart.
The Color Reference Chart has five permanent reference colors mounted in a durable protective plastic case.
The sodium hydroxide pellets make enough 3% solution to perform over 150 tests.