1. Scope

Keywords

Rationale

The following compressed gas specification was developed in collaboration with a diverse group of stakeholders representing Tier 1, Tier 2, Tier 3, and Tier 4 gas distributors, cannabinoid product manufacturers, and cannabinoid extract consumers. The intent of this standard is to: ? Provide specifications for liquefied petroleum gases (LPGs), specifically n-butane, isobutane, and propane, intended for use in herbal extraction and refinement activities. Specifications shall include minimum gas concentration, allowable impurities and contaminates that must be controlled. ? Outline the test methods for verifying the defined constituents are withing specification. ? Provide specifications for the assembly of compressed gas cylinders used for storage of LPGs intended for use in herbal extraction and refinement activities. While most of the input for this standard did come from North America, an effort was made to solicit as much feedback from impacted global marketplaces as possible. This standard is only the beginning and attempts to address a major gap regarding impurity and contaminant specifications for compressed gases used in herbal extraction. Please remember that ASTM International standards are living documents and are intended to be updated and revised over time. This initial version will not be perfect, but it will serve to provide marketplaces with the information they need to make informed decisions regarding compressed gas requirements and regulations.