Sodium arsenate dibasic heptahydrate (As) Back Catalog number: 50647 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54011 Total Kjeldahl Nitrogen as N Price on request 53145 Method 200.8/1638/1640 Internal Standard Price on request 1115.18-100-TX5 6-Nitrochrysene-d11, 100µg/mL, Solvent-toluene, Unit 1mL, # of units-5, Cas.no. 203805-92-9 Price on request