Sodium arsenate dibasic heptahydrate (As) Back Catalog number: 50647 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91760A CLP - Semi-Volatile Additional Compound Standard Price on request 30102 EPA Method 551.1 Surrogate Standard Price on request 30176 EPA Method 515.2 - Analytes Price on request