Standard Specification for Rubber-Concentrated, Ammonia Preserved, Creamed, and Centrifuged Natural Latex
1.1 This specification covers requirements for first grade concentrated natural rubber latex (see Table 1) of the following categories:
Category 1-Centrifuged Hevea natural latex preserved with ammonia only or by formaldehyde followed by ammonia.
Category 2-Creamed Hevea natural latex preserved with ammonia only or by formaldehyde followed by ammonia.
Category 3-Centrifuged Hevea natural latex preserved with low ammonia with other necessary preservatives.
Category 4-Centrifuged, or centrifuged and creamed, guayule latex, or other natural rubber latex, containing less than 200 g total protein per gram dry weight of latex, with ammonia or other hydroxide, with other necessary preservatives and stabilizers.
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 categories of latices. It does apply to natural latex sources other than Hevea brasiliensis but does not apply to compounded latex concentrates.
1.3 The analytical procedures applicable to the specifications are included and appear in the following order:
1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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Documents sold on the ANSI Standards Store are in electronic Adobe Acrobat PDF format.however some ISO and IEC standards are available from Amazon in hard copy format.
