pH 12.0 Standard @ 25°C Back Catalog number: 50127 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92388 Semi-Volatile Standard Price on request 71713 Citric acid Price on request 0953.10-K-IO 2,4-/2,6-Dimethylbenzothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 102035-96-1 / 66142-67-4 Price on request