| pH - simulator ISH 1500 | 24 pH values between pH 0 and pH 14, 24 selectable measuring point temperatures (-20 to 150°C)24 Pt100 temperature simulation values (-20 to 150°C) |
| pH - simulator ISH 2500 | 7 pH values between pH 1 and pH 13, 24 selectable measuring point temperatures (-20 to 150°C)5 redox potentials between -700mV and 1000mV |