| Model | Type |
| RE-DJC-1 | Saturated Double Junction Calomel Reference Electrode |
| RE-SJC-1 | Saturated Single Junction Calomel Reference Electrode |
| RE-NA-1 | Single Junction Calomel Reference Electrode for Sodium (Na+) ISE |
| RE-K2SO4-1 | Saturated K2SO4 Single Junction Calomel Reference Electrode for Chlorine (Cl-) ISE |
| RE-AGCL-2 | Ag/AgCl Reference Electrode |