7. Reagents and Materials
7.1 Heptane, clean commercial or reagent grade.
NOTE 4—Warning: Flammable. Harmful if inhaled.
7.2 Acetone, clean commercial or reagent grade.
NOTE 5—Warning: Extremely flammable.
7.3 Lintless Filter Paper, (5 6 1 µm retention).
7.4 Certified Reference Materials.
8. Sampling
8.1 Unless otherwise specified in the commodity specification, samples shall be taken as described in Practice D 4057 or
D 4177 in accordance with the requirements of national standards or regulation for the sampling of the product under test,
or both.