Arsenic (As) Back Catalog number: 59785 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72340 1-(2,5-Dichlorophenyl)-3-methylurea Price on request 674480 Lactofen, 100mg Price on request EPA-8280ISB Additional Internal Standard Solution, 1.2ml, toluene Price on request