pH 12.45 Standard @ 25°C Back Catalog number: 50708 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93911 Volatile Standard Price on request D471435 4,6-Dimethyl-8-tert-butylcoumarin, 1g Price on request 79633 Pentachloronitrobenzene, 1000µg/ml in Acetonitrile, 1ml Price on request