Work Item
ASTM WK71840

New Practice for sample preparation of cannabis and hemp inflorescence for analysis.

1. Scope

A standardized process for sample preparation is proposed for cannabis and hemp inflorescence. The approach will depend on the proportionality of the sample where sub-sampling is typically performed for preparation of the sample to test. Many factors can influence the final particle size of the milled material including: environmental conditions/temperature, moisture content, volume of the material and types of grinding, milling apparatus used.


sample preparation, homogenization, grinding, milling, sampling, cryogenics


All analyses start with some form of sample preparation and homogenization of a proportionate sample. Many approaches exist between mechanical grinding, ball mills (wet and dry grinding) and cryogenic grinding of the sample for testing purposes. In addition many different devices and equipment can be used with the resulting sample consistency varying based on the approach taken.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D37.03

Committee: D37

Staff Manager: Jimmy Farrell

Work Item Status

Date Initiated: 02-06-2020

Technical Contact: Katherine Evans

Item: 001

Ballot: D37.03 (20-04)

Status: Will Reballot Item

Item: 001

Ballot: D37 (22-11)

Status: In Balloting