Tetrahydrofuran Back Catalog number: 79507 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PN-37S 1,2,5,7-Tetrachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request 677986 Fenthion, 100 µg/ml, Toluene, 1ml Price on request 20013 EPA Method 8260 - Purgeable Internal Standard Price on request