Spiking Standard 3 Back Catalog number: 53066 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2540.7-K-ME Paraxanthine, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 611-59-6 Price on request SCPCB8-100-061 CONOSTAN Multi Element Ca,K,Mg,Na,P20ppm, 100g Price on request 66176 2,2',3,3',4,6,6'-Heptachlorobiphenyl Price on request