Section R11-1-2033. Phosphorous pentasulfide

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Phosphorous pentasulfide shall be added slowly to the sodium hydroxide solution from a container large enough to hold just the amount needed for one bath. This conveyor shall be constructed of spark-resistant materials, driven by an explosion-proof motor, ther- mostatically controlled at a safe mixing solution temperature. The container shall be electrically bonded and grounded or constructed of non-sparking material.

Historical Note

Former Rule 20:33.

                    
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