pH 12.0 Standard @ 25°C Back Catalog number: 50127 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66169 3,3',4,4',5,5'-Hexachlorobiphenyl (169) Price on request 82429 EPA 8240B Calibration Mix 6 Price on request 63110 2,3,3',4',6-Pentachlorobiphenyl (110) Price on request