Internal & Surrogate Standard 8260B Back Catalog number: 97179 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C17895610 Tylosin phosphate, 100mg Price on request 676682 Citric acid monohydrate, 100mg Price on request 676131 Methoxychlor, 100 µg/ml, Acetone, 5ml Price on request