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Full Description

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 stabilized with ammonia only.

Category 2'''Creamed Hevea natural latex stabilized with ammonia only.

Category 3'''Centrifuged Hevea natural latex stabilized with low ammonia.

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.

Category 5'''Centrifuged Hevea natural latex treated with aluminum hydroxide or by other means, stabilized with ammonia only containing less than 0.5 % non-rubber content.

1.2''This specification is not necessarily applicable to latices prepared, stabilized, 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:

''

Section

''''''''''''Sampling

6 and 7

''''''''''''Total Solids

'''8

''''''''''''Dry Rubber Content

'''9

''''''''''''Protein Content

10

''''''''''''Total Alkalinity

11

''''''''''''Viscosity

12

''''''''''''Sludge Content

13

''''''''''''Coagulum Content

14

''''''''''''KOH Number

15

''''''''''''pH

16

''''''''''''Mechanical Stability

17

''''''''''''Copper and Manganese

18

''''''''''''Density

19 ''' 31

''''''''''''Volatile Fatty Acids

32 ''' 36

''''''''''''Boric Acid

37

''''''''''''Dry Films

38

''''''''''''Precision for All Test Methods

39

1.4''The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.5''This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 

Document History

  1. ASTM D1076-21

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

    • Most Recent
  2. ASTM D1076-15(2020)


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

    • Historical Version
  3. ASTM D1076-15


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

    • Historical Version
  4. ASTM D1076-14


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

    • Historical Version
  5. ASTM D1076-10


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

    • Historical Version
  6. ASTM D1076-06


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

    • Historical Version
  7. ASTM D1076-02


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

    • Historical Version