The PUT and DELETE methods are defined to be idempotent. However, there is a caveat on DELETE. The problem with DELETE, which if successful would normally return a 200 (OK) or 204 (No Content), will often return a 404 (Not Found) on subsequent calls, unless the service is configured to "mark" resources for deletion without actually deleting them. However, when the service actually deletes the resource, the next call will not find the resource to delete it and return a 404. However, the state on the server is the same after each DELETE call, but the response is different.
To perform these tests, a g sample of flower is mixed with a test fluid. Very small samples of the mixture are precisely measured and applied with a pipette or capillary tube to a specially coated glass plate. The plate is then placed in a jar, standing in additional test fluid. The fluid then wicks up the plate, carrying the cannabinoids with it. The individual properties of the cannabinoids cause them to be left in line, in a particular color and specific order, up the plate. Once the plate is dry, it is sprayed with a dye to reveal the colored spots. The size of the spots is compared to a template, which determines potency results in increments of one percentage point.