ASTM D1076 : 02

Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex

Standard Details

1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following types:

Type 1-Centrifuged natural latex preserved with ammonia only or by formaldehyde followed by ammonia.

Type 2-Creamed natural latex preserved with ammonia only or by formaldehyde followed by ammonia.

Type 3-Centrifuged natural latex preserved with low ammonia with other necessary preservatives.

1.2 This specification is not necessarily applicable to latices prepared or preserved by other methods, and shall not be construed as limiting the desirability or usefulness of other types of latices. It does not apply to natural latex sources other than Hevea braziliensisnor to compounded latex concentrates.

1.3 The analytical procedures applicable to the specifications are included and appear in the following order:

	Section
Sampling	6 and 7
Total Solids	8
Dry Rubber Content	9
Total Alkalinity	10
Viscosity	11
Sludge Content	12
Coagulum Content	13
KOH Number	14
pH	15
Mechanical Stability	16
Copper and Manganese	17
Density	18-30
Volatile Fatty Acids	31-35
Boric Acid	36
Dry Films	37
Precision for All Test Methods	38