Internal Standard for AB SIM Back Catalog number: 94541 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677784 Metformin hydrochloride, 100 µg/ml, Methanol, 1m Price on request 59248 ICP-MS Standard 3 Price on request 59496 Common Anions Mix 1Lot 2 Price on request