EPA Method 8140/8141 Analytes Back Catalog number: 81400 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11158.18-250MG L-Nicotine bitartrate dihydrate,neat,neat,250mg, Price on request 71592 Chlorophyll A/B Standard Price on request 52141 EPA 1620 Standard 3 Price on request