The evaluation determined that this portable device can be used to analyze gas, liquid, or solid (dissolved powder) samples that contain single or multiple component mixtures. The Solid Phase Micro Extraction (SPME) syringe is a single mechanism by which both sample preparation (extraction) and sample injection can occur in one efficient, easy-to-use device. After sample injection occurs, results can be obtained within 2 to 4 minutes, depending on the GC parameters set in the uploaded method. Unit power-up to sample injection time was noted to be 3 to 4 minutes. Most other portable GC/MS instruments take at least 25 to 30 minutes to reach operational vacuum and temperature conditions. The GC-TMS instrument weighs approximately 25 pounds and is engineered to be housed completely encased within a 12 in x 7 in rugged pelican case, which protects the unit from shock, vibration, and harsh environmental conditions during transport. The unit is portable and does not require any external carrier gas supply or external power source, but it is capable of accessing these sources if needed. One limitation is the instrument's limited mass scan range for small organic molecule identification. The samples used for this evaluation were selected to be a small representative subset of controlled substances and common cutting agents. 1 figure and photos of the instrument