TCLP Syringes for Volatile Sample Collection When a volatile sample is collected for TCLP analysis, a major concern is to minimize the loss of volatile constituents. Our TCLP gas tight syringes use a unique locking valve that allows sample extract to be drawn directly out of the zero head space device and stored in zero head space condition until injected into a GC/GCMS or a purge and trap. These reusable TCLP syringes have wetted surfaces of borosilicate glass, PTFE and/or 316SS. Available in 5mL, 10mL, 25mL, 50mL, and 100mL sizes.