WP Total Hardness Back Catalog number: 54156 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended XA12210000AL Diazinon, 100µg/mL in Acetonitrile, 1ml Price on request 678949 Fipronil-desulfinyl, 10.0 µg/ml, Acetonitrile, 1 Price on request 79639 Fluoranthene Price on request