This standard sets the specifications for natural latex concentrated by evaporation. It is not applicable to natural latex concentrated by centrifugation or flotation, to natural latex that does not come from Hevea Brasiliensis, to latex mixtures or to vulcanized latex. This standard describes the specifications of evaporated natural rubber latex of the following types: Natural latex, type HA evaporated. Evaporated latex preserved with ammonia or with ammonia in the presence of one or more preservation agents with an alkalinity of at least 0.60% (m/m) with respect to latex. Natural latex, evaporated KHS type. Evaporated latex preserved with potassium hydroxide, whose nominal content of total solids is 73%. Natural latex, evaporated KLS type. Evaporated latex preserved with potassium hydroxide, whose nominal content of total solids is 68%.