Technical buffer solutions for pH 2.00, pH 4.01, pH 7.00 und pH 10.01: pH 4.01, pH 7.00 and pH 10.01 are available in 250 ml bottles including dosing chamber (TPL 4, 7 und 10.01 Trace) as well as in 1 l special bottles with dosing chamber (TEP 4, 7 and 10.01 Trace) and nozzle . Special buffer pH 2.00 is also available in the 1 liter bottle. So it is easy to link the bottle size to the individual consumption.
All technical buffer solutions are traceable to PTB (Physikalische Technische Bundesanstalt, Germany) respectively NIST (National Institute of Standards and Technology, USA). The accuracy is ± 0.03 pH. Each bottle carries its individual lot number with expiry date. Manufacturers certificates can be downloaded here.
In 250 ml bottles the following standard buffer solutions according DIN 19266-2000-01 are available: pH 1.680, pH 4.006, pH 6.868, pH 9.180 and pH 12.47 (PL 2, PL 4, PL 7, PL 9 and PL 12).
Their accuracy is ± 0.02 pH. Each bottle carries its individual lot number with expiry date.