| GPH 014 | pH meter with electrode GE014 | 71.10 EURO |
| GPRT 1400 A | pH, mV and temperature meter | 162.60 EURO |
| GMH 3530 | pH, rH, mV and temperature meter | 141.50 EURO |
| GMH 3430 | Conductivity, temperature, salinity, TDS meter | 233.00 EURO |
| GMH 3630 | Dissolved oxygen and temperature meter | 532.50 EURO |
| GMH 3690 | Oxygen in air and temperature meter | 255.30 EURO |