Pufferlösung pH 11.00, 500 ml Flasche, ±0,01pH, mit Analysezertifikat

Reference electrode made ​​of glass with a simple diaphragm and refillable, for ISE titration.

Buffer solution pH 4.010, 25 sachets of 20 ml, ± 0.002 pH, millesimal Quality with certificate of analysis