WP Total Hardness Back Catalog number: 54597 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8805.4-1ML 3-(Methylthio)-1-propanol, neat, Solvent-neat, Unit 1mL, # of units-1, Cas.no. 505-10-2 Price on request 11670.12-100-IO 2,2',3-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request 50697 ICP Mix Precious Metals Price on request