Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678219 1-(4-Isopropylphenyl)urea, 100mg Price on request 8421.4-100-ME Desphenyl chloridazon, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. Price on request 673776 Dazomet, 10 µg/ml, Ethyl acetate, 10ml Price on request