| Specification |
F 240 |
F 250 |
F 255 |
F 260 |
F 265 |
F 295 |
| Warranty |
3 Years |
| pH and Temperature Mode |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
| mV and Relative mV Mode |
No |
Yes |
Yes |
Yes |
Yes |
Yes |
| Concentration (ISE) Mode |
No |
No |
No |
No |
No |
Yes |
| RS-232 and Data Storage |
No |
No |
No |
Yes |
Yes |
Yes |
| GLP/GMP Compliance |
No |
No |
No |
Yes |
Yes |
Yes |
| Dust Tight & Waterproof |
No |
No |
Yes |
No |
Yes |
Yes |
| pH |
Range |
0 to 16 pH |
-2 to 19.99 pH |
| Resolution |
0.1, 0.01 pH |
0.1, 0.01,
0.001 pH |
| Relative Accuracy |
± 0.01 pH |
± 0.004 pH |
| mV |
Range |
N/A |
± 1000 mV |
± 1600 mV |
| Resolution |
0.1 mV |
0.1 mV |
| Relative Accuracy |
± 0.2 mV |
± 0.2 mV |
| Temp |
Range |
-5 to 105 °C
(23 to 221 °F) |
| Resolution |
0.1 °C or °F |
| Relative Accuracy |
± 0.5 °C or
1% |
| Conc |
Range |
N/A |
0-19900 |
| Resolution |
lsd* |
| Relative Accuracy |
0.5% |
Automatic Temperature
Compensation
(ATC) |
Over entire
range |
Locking onto Stable Readings
with
Auto-Read™ |
Yes |
Stored Buffers
recognized with
Auto-Find™ and ATC Function |
5
1.68, 4.00, 7.00, 10.01, and 12.45 pH |
| Replacement Buffers
recognized with Auto-Find and ATC Function |
N/A |
4
6.86, 7.41, 9.18, and 11.88 pH |
| Custom Buffers |
N/A |
5 |
| Calibration Points (pH) |
2 |
3 |
5 |
| Calibration Points (Conc) |
N/A |
5 |
| Simultaneous Display of
Results and Temperature |
Yes |
| Setup Mode |
N/A |
Yes |
| °C/°F Selection |
N/A |
Yes |
| Continuous Display of
Standards |
N/A |
Yes |
| Audible Support |
N/A |
Yes |
| Review of mV, Eo and Slope |
N/A |
Yes |
| Re-calibration Alert |
N/A |
Yes |
| Numeric Keys for Input |
N/A |
Yes |
| RS-232 Interface |
N/A |
Yes |
| Number of Storage Locations |
N/A |
100 |
| Selectable Storage Locations |
N/A |
Yes |
| Date and Time Stamp |
N/A |
Yes |
| Storage and Link of Standards |
N/A |
Yes |
| Standards Header on Output |
N/A |
Yes |
| Display |
LCD with
Status and Help Icons |
| Error Messages |
Yes |
| Auto Shut-Off with Battery
Operation |
Yes |
| Battery-Operated |
Yes |
| AC Line Operation |
Optional (AC
Adapter) |
