Potassium (K) Back Catalog number: 59284 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended EDF-6999-10X Method 1613 Clean-up Standard, 8ng/ml in Nonane, 20ml Price on request C15661000 Nystatin, certified, 0.25g Price on request 33263 Chloroacetic acid Price on request