Gas Exploration Standard Back Catalog number: 98538 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59162 QC-21 Price on request 8421.4-5MG Desphenyl chloridazon, neat, Solvent-neat, Unit 5mg, # of units-1, Cas.no. Price on request 72268 Thiamine Price on request