1.1 This test method covers the determination of the total nonaromatic hydrocarbons, benzene, toluene, ethylbenzene, xylenes, and C₉ + aromatic hydrocarbons in BTX concentrates by capillary column gas chromatography. This test method is applicable ot materials with a final boiling point below 215^oC.

Individual components can be determined fro 0.01 to 90%.

1.3 The following applies to all specified limits in this standard; for purpose of determining conformance with this standard, an observed value or a calculated value shall be rounded off "to the nearest unit" in the right-hand digit used in expressing the specification limit, in accordance with the rounding-off method of Practice E29.

1.4 This standard does not purport to address all of the safety concerns, if any, asociated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see Section 9.