EPA Method 8260B - Purgeable Internal Std Back Catalog number: 22013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-B Mass-Labelled PCDD/PCDF Internal Standard Solution, 1.2ml, nonane Price on request S-4432 Tm/Ts Mixture Tm – 0615,27 17alpha(H)-22,29,30-Trisnorhopane Ts – 2635,27 18alpha(H)-22,29,30-Trisnorneohopane With a spesific ratio between the two peaks based on a SIM spectra of ion m/z = 191 Price on request 71266 Triforine Price on request