Method 1640 Tuning Standard Back Catalog number: 53147 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2732.29-100-HX 24-Ethylcholest-5-en-3ß-ol, 100µg/mL, Solvent-n-hexane, Unit 1mL, # of units-1, Cas.no. 83-46-5 Price on request X9174 Pentachlorobenzene Price on request 71227 p-Terphenyl, 1000µg/ml in MethyleneChloride, 1ml Price on request