| Resolution | 0.01 PH |
| Brand Name | Spectronics India |
| Model No | SI-144 |
| Function | Ph or Mv & Temperature Simultaneously |
| Display | 16 character x 2 lines Alphanumeric BL LCD |
| Power Supply | 230 V ± 10% 50 Hz AC |
| pH Range | 0 to 14 pH |
| Accuracy | ± 0.01 pH ± 1 digit Slope adjustment 80% to 120% By default 100% Temp. compensation 0 to100 ˚C Auto with temp probe / Manual |
| Slope Adjustment | 80% to 120% By default 100% |
| Temp. Compensation | 0 to100 C Auto with temp probe / Manual with keys |
| Auto Buffer Recognition | 4.00 pH, 7.00 pH,9.20 |
| pH Calibration | Auto as manual, 3 point / 2 point (Programmable) |
| mV Range | -1999 mV to +1999 |
| mV Resolution | 1 |
| mV Accuracy | ± 0.1% ±1 digit |
| Calibration | Three point manual Temperature |
| Range | -50.0 C to 200 C |
| Location | Worldwide |
| Weight | 220 X 190 X 100mm : 1 Kg. Approx. 1 Kg. With Accessory 2 Kg. Approx. |
| Model No. | SI-146 |
| Display | 16 x 2 LCD Display |
| pH Range | 0 to 14.00 mV ±399.9mV : ± 2000mV Temp. 0 to 120.0°C |
| pH Resolution | 0.01pH mV 0.1 (±399.9mV): 1 ± 2000mV |
| pH Accuracy | ±0.01 mV 0.1 (±399.9mV) : 1 ± 2000mV |
| Temperature | Automatic/Manual |
| PpH Calibration | Automatic 2 Point memorized Buffer Value |
| pH Electrode | Glass Body, Single junction, BNC Connector, 1m Cable (included) |
| Temperature Probe | PT 100 with 1m Cable |
| Input Impedance | 1012 Ohm |
| Environment | 0 to 50°C ; RH max 95% |
| Power | 220V ±10% 50 Hz with in-built stabilizer |
| Zero Setting | Worldwide |