Niobium (Nb) Back Catalog number: 58041 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677422 2,4-DB, 10 µg/ml, Acetonitrile, 10ml Price on request 50647 Sodium arsenate dibasic heptahydrate (As) Price on request 673372 Methiocarb, 10.0 µg/ml, Acetonitrile, 10ml Price on request