Internal Standard Back Catalog number: 96651 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 54142 Alkalinity as Calcium Carbonate, 1000µg/ml in Water, 100ml Price on request 97910 Diquat Price on request ACQ-WH30-030 Ethanol standard in whole blood,3.0g/L,whole blood, 3mL Price on request