Description
Cole-Parmer® Oakton® PH250 Waterproof pH and ORP Handheld Meter Kit, 35660-10
Features:
- Rugged, waterproof, and dustproof with IP67 rating for use in any environment
- Nonslip ergonomic design for comfortable handling
- Easily view measurements with large monochrome LCD with white LED backlighting
- Download and analyze data with USB output (model 260) and phono jack printer connections
- Take it with you—500 hours of battery life
- Accurately measure pH, ORP and temperature
- Easy-to-read and accurate readings with auto-hold, auto-stable, and real-time measurements with stability indicators
- 200 series of water quality meters feature electrode status indicator, which shows condition of electrode after each calibration
- Easily view electrode condition, reading stability, measured parameter, and temperature in one screen
- Fluctuating temperature are compensated with ATC to ensure measurement accuracy
- Simple user interface with adjustable auto shut-off time ranging from 1 to 30 minutes
- Self-diagnosing meters display measurement and meter issues for fast fault finding and troubleshooting
- Built-in foldable stand on back of meter
- Two grooves on side of meter serve as electrode holders, to hold up to 2 electrodes
- Memory for 250 series: 500 data points (scroll thru on meter)
Included:
- Meter
- 91-2603-52 (Oakton® 35660-10) Electrode
- Calibration solutions (Numbers provided are recommended replacement solutions):
- COP-WD00654-00 (Oakton® 00654-00) pH 4.01 Buffer
- COP-WD-00654-04 (Oakton® 00654-04) pH 7.01 Buffer
- COP-WD00654-08 (Oakton® 00654-08) pH 10.01 Buffer
- 2 AA batteries
Specifications:
| Meter Type | Multiparameter Portable |
| Display | Backlit LCD |
| Connectors | BNC and phono |
| pH Resolution | 0.01 pH units |
| Automatic Buffer Recognition | USA, NIST, and DIN |
| Calibration Points | 5 for USA and NIST, 6 for DIN |
| mV Resolution | 0.1 mV (<±1000 mV), 1 mV (≥±1000 mV) |
| mV Accuracy | ±0.3 mV (<±1000 mV), 0.3% of reading (≥±1000 mV) |
| Temperature Resolution | 0.1 °C / 0.1 °F |
| Temperature Compensation | Automatic |
| Waterproof Rating | IP67 |
| NIST Calibration Included | No |
| Probe Included | Yes |
Specifications
| Range | pH: -2 to 16 pH units |
|---|---|
| Range | mV/ORP: -2000 to 2000 mV |
| Range | Temperature: -30 to 130 degrees C / -22 to 266 degrees F |
| Power | 2 AA batteries |
| Accuracy | pH: +/- 0.01 pH units, Temperature +/-0.5 degrees C/0.9 degrees F, ORP: +/-0.3 mV (< +/-1000 mV), 0.3% of reading |
| Compliant/Standard | CE, EMC: EN61326-1 Class B , Basic electromagnetic environment, RoHS: EN50581, 9 Monitoring and control instruments |
| Connectivity | Input: BNC & phono |
| Connectivity | Output: None |
| Dimensions | L x W x H: 16 x 8 x 4.06 cm / 3-5/32 x 6-19/64 x 1-19/32 in. |
| Manufacturer | Cole-Parmer |
| Model No | 35660-10 |
| Warranty | 3 year |
SDS PDFs
It is our policy to provide the latest Safety Data Sheet (SDS) for all chemicals we ship. Each shipment will contain copies for every chemical contained in the shipment, and for any chemical included in an instrument kit or calibration kit.
Contact us for additional copies of an SDS or for a copy of the Certificate of Analysis:
Phone: 1-800-624-8285
Email: INFO_SDS@preiser.com

