CLP - Instrument Performance Check Solution Back Catalog number: 19167 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678397 beta-Endosulfan, 100 µg/ml, Acetonitrile, 5ml Price on request 674481 Citrate-Extraction-Mix Price on request 93126 EPA Method 622/8140 - Analytes Price on request