Massachusetts Cannabis Control Commission protocol requires finished marijuana products to be tested for four metals. The protocol states that Exhibit 4 limits are in micrograms of contaminant per kilogram of product and that the upper allowable limit for heavy metals is 500 ppb for all uses and 1,000 ppb for ingestion-only products. Arsenic and mercury are not speciated in the extracted paragraph, so they are loaded as total arsenic and total mercury.
Update history
No substantive edit history is available in this build. The full commit record is available in git.