Fluoride in Water (F-) Back Catalog number: 50747 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended BCR-340 Benzo[b]naphtho[1,2-d]furan, 10mg Price on request 54597 WP Total Hardness Price on request PN-70S 1,2,3,6,7,8-Hexachloronaphthalene, 1.2mL x 50ug/mL, nonane Price on request