D1278-91a(2020) Standard Test Methods for Rubber from Natural Sources—Chemical Analysis
D1485-07(2020) Standard Practice for Rubber from Natural Sources—Sampling and Sample Preparation
D2227-96(2020) Standard Specification for Natural Rubber (NR) Technical Grades
D2449-88(2020) Standard Specification for Rubber Bales From Natural Sources—Limit on Coating
D3157-05(2020) Standard Test Method for Rubber from Natural Sources—Color
D3184-11(2022) Standard Practice for Rubber—Evaluation of NR (Natural Rubber)
- See also WK83768 proposed reapproval
D3194-17(2022) Standard Test Method for Rubber From Natural Sources—Plasticity Retention Index (PRI)
- See also WK83767 proposed reapproval