Spiking Standard 3 Back Catalog number: 52072 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3623.20-10MG 17 alpha-Ethynylestradiol, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 57-63-6 Price on request 50799 Solids (Total Solids, TSS, & TDS) Price on request 71109 4-Hydroxy-4-methyl-2-pentanone Price on request