Nitrate & Nitrite as N Back Catalog number: 54162 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678484 Terbumeton-desethyl, 100 µg/ml, Methanol, 1ml Price on request 70494 sym-Trinitrobenzene Price on request 10900.17-K-DS Promethazine hydrochloride,1000 µg base/mL,DMSO,1mL Price on request