Our comprehensive line of high-quality GSR field sampling kits includes certified SEM pin stubs with double-coated adhesive carbon tabs in plastic tubes. The certified SEM pin stubs have very low amounts of Pb, Sb and Ba, not detectable by SEM/EDX. The caps securely hold the GSR sample disc for easy GSR collection. Pre-labeled discs and tubes are both ready-for-sampling. A sturdy, sealed tamper evident transport box is also included. Compatible with FBI requirements, with four discs plus a control disc.