CHAPTER VIII

COAGULATION

Choice of coagulant--Strength of acid solution--Making stock solution--Quantity for use--Quantities under modern requirements--Care in mixing--Method of mixing with latex--Use of sodium bisulphite as an anti-oxidant--Quantities for use-- Formulae--Abuse of the chemical--Residual traces in the dry rubber--Use of sodium sulphite as an anti-coagulant, quantities for use--Formulae--Use of Formalin as anti-coagulant --Formulae for use 74