ASTM-D4734 2012

1.1 This specification covers benzene-545.

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

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 Consult current OSHA regulations , supplier’s Material Safety Data Sheets, and local regulations for all materials used in this specification.