1.1 This test method covers the determination of methanol in propylene concentrates in the range of approximately 4 to 40 mg/kg (parts-per-million by weight).1.2 This standard does not purport to address all of the safety concerns, if any, associated 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. Note 1 here is no direct acceptable SI