See In case your weed is contaminated which has a synthetic cannabinoid check kit. They are not created for this.10 You are able to see synthetic cannabinoids which has a microscope, or an exceedingly strong magnifying glass.eleven In case the weed is contaminated, you could see crystals to the area. https://base-directory.com/listings12970652/facts-about-online-weed-shops-germany-revealed