4. Gas chromatograph, FID, integrator and column (page 1400-1). 5. Vials, glass, 2-mL, PTFE-lined crimp caps. 6. Syringe, 10-µL, readable to 0.1 µL. 7. Volumetric flasks, 10-mL. SPECIAL PRECAUTIONS: Carbon disulfide is toxic and an acute fire and explosion hazard (flash point = 30 °C); all work with it must be done in a hood. SAMPLING: 1.