|   |   
| Modes | pH | mV | Temperature |  
|  |  
| Ranges | -2.000 to 20.000 | ±2.400 | -5,0 to 105,0 °C |  
|  |  
| Resolution | 0,001/0,01/0,1 | 0,1/1 | 0,1 |  
|  |  
| Accuracy | ±0,001 pH | ±0,05 mV | ±0,1 °C |  
|  |  
| Temp Compensation | Automatic and manual: -5 to 105 °C |  
|  |  
| Slope Control | Automatic, 90 to 105%; manual, 80 to 110% |  
|  |  
| Environment | 15 - 40 °C, 0 - 90% relative humidity |  
|  |  
| Ion Mode |  |  
| Range | 1,00 x 10-9 to 9,99 x 109 |  |  
| Resolution | 1, 2, 3 significant digits |  |  
| Relative accuracy | ±0,09 n% |  |  
|  |  
| Conductivity Mode (Models 250/220) |  |  
| Conductivity Range | 0 to 300.000 µs/cm (depending on cell constant) |  
|  |  
| Relative accuracy | 0,5% reading |  
|  |  
| Salinity ranges | Autoranging, 0.01 to 70ppt NaCl equivalent salinityAutoranging, 0.01 to 42ppt NaCl practical salinity
 |  
|  |  
| Resistivity | 30 Ohm•cm to 1, 10 oder 20 Megohm•cm (at cell constants of 10, 1, 0.5cm-1 respectively). Autoranging units; readout in ohm∑cm, kilohm∑cm, or megohm∑cm. Fixed units: kilohm∑cm |  
|  |  
| Total dissolved solids | 0,005 to 1,5 x 105 mg/L (at 0.5 solids factor, depending on cell constant) |  
|  |  
| Temp coefficient | Software configurable; off or on,0 to 4%/°C
 |  
|  |  
| Meter kits includes: Meter, power supply, high performance glass-body pH/ATC electrode 300729-1, electrode arm and operation manual.
 |    
| Features |  
|  |  
| Large , multifunctional, backlit display |  
|  |  
| Plain language menus |  
|  |  
| Soft Key Help Function |  
|  |  
| 5 Calibration Points |  
|  |  
| Auto-buffer recognition of 27 buffers |  
|  |  
| Storage for up to 620 results |  
|  |  
| RS232 Data Interface |  
|  |  
| Complete GLP/GMP/ISO documentation |  |