WP Total Hardness Back Catalog number: 54156 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8-B-234-CDF 8-Bromo-2,3,4-trichlorodibenzofuran, 1.2ml x 50ug/ml, toluene Price on request 57047 Silver (Ag), 1000µg/ml in 2%-HNO3/Water, 100ml Price on request 678664 S-Metolachlor Metabolite CGA 37735, 100 µg/ml, Ac Price on request