Cann-A-Lab offers comprehensive solvent screening for medical cannabis. We use Gas Chromatography/Mass Spectrometry (GC/MS) methods to quantify residual solvents down to 20 parts per million. Our methodology and instrumentation are some of the most advanced used in the medical cannabis industry. We currently screen for the following solvents: acetone, butane, ethane, ethanol, isobutane, isopropanol, methane, methylbutane, propane, pentane, and hexane.