COLO.Science — WATER QUALITY / ELECTROCHEMISTRY — PRO6149
High Temp Resistance Electrode PRO6149
PRO6149 high temp resistance electrode is a high-temperature resistant pH composite electrode for demanding laboratory and process pH measurement. It combines the pH indicator and reference functions in one glass-body electrode and is designed for a wide working temperature range from –5 to 110 °C. With 0–14 pH range, glass body, ceramic junction, Longlife reference system, 3 M KCl fill solution, Ø12 × 120 mm body format and S7 connector, PRO6149 is suitable for hot water checks, chemical process samples, pharmaceutical QC and elevated-temperature laboratory workflows.
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COLO.SCIENCE — PH ELECTRODES / ELECTROCHEMISTRY / WATER QUALITY
High-temperature pH composite electrode for demanding samples and hot workflows
The PRO6149 high temp resistance electrode is intended for laboratories and process users that need pH measurement in samples where temperature may exceed the practical range of standard routine electrodes. The glass body, ceramic junction and Longlife reference design support stable pH measurement in thermally demanding applications.
This electrode uses an S7 connector. For meters with standard BNC pH input, use a compatible S7-BNC(Q9) cable. Connector and cable compatibility should always be confirmed before quotation.
Key features
- High-temperature pH composite electrode for demanding laboratory and process samples.
- Working temperature –5 to 110 °C for elevated-temperature applications.
- pH range 0–14 for general and demanding pH measurement workflows.
- Glass sensor and glass body for precise pH measurement and chemical resistance.
- Ceramic junction for stable electrolyte contact with the sample.
- Longlife reference system with 3 M KCl fill solution.
- Ø12 × 120 mm body format for common holders, vessels and laboratory setups.
- S7 connector; S7-BNC(Q9) cable required for meters with BNC pH input.
Suitable for
- High-temperature pH measurement in laboratory workflows.
- Hot water checks and heated aqueous sample testing.
- Chemical process samples and thermal process control checks.
- Pharmaceutical QC and routine analytical laboratory use.
- Environmental and water quality applications requiring a robust glass electrode.
- Replacement electrode configurations where an S7 connector format is required.
TECHNICAL SPECIFICATIONS — PRO6149 HIGH TEMP RESISTANCE ELECTRODE
| Model / SKU | PRO6149 |
| Product type | pH composite electrode with high temperature resistance |
| Electrode structure | pH indicator electrode + reference electrode in one glass-body probe |
| pH range | 0–14 pH |
| Reference type | Longlife reference |
| Fill solution | 3 M KCl |
| Sensor material | Glass |
| Body material | Glass body |
| Junction material | Ceramic junction |
| Working temperature | –5 to 110 °C |
| Dimension | Ø12 × 120 mm |
| Connector type | S7 connector |
Final measurement performance depends on the pH meter, electrode condition, buffer quality, sample matrix, temperature setting or compensation method, storage procedure and laboratory method. Connector compatibility must be confirmed before quotation.
Composite electrode structure and practical laboratory use
pH indicator function
The pH-sensitive glass element provides the measurement signal for pH determination across the specified 0–14 pH range.
Reference system
The Longlife reference system with 3 M KCl fill solution supports stable routine and high-temperature pH measurement when the electrode is correctly maintained.
Temperature note
PRO6149 is a high-temperature resistant pH composite electrode, but it is not a 3 in 1 electrode with integrated temperature probe. Use meter temperature settings or a separate compatible temperature probe where automatic temperature compensation is required.
VISUAL REFERENCE — ELECTRODE BODY AND S7 CONNECTOR
PRO6149 glass-body high temp resistance electrode and connector reference
Main electrode: PRO6149 high-temperature pH composite electrode with glass body, ceramic junction and Ø12 × 120 mm body format.
Connector reference: S7 connector format. For BNC(Q9) pH meter inputs, use a compatible S7-BNC(Q9) cable.
COLO.SCIENCE VIDEO
PRO6149 video presentation is in preparation
The video will present the glass-body electrode format, S7 connector, S7-BNC(Q9) cable requirement, calibration workflow, high-temperature pH measurement notes and practical use with compatible COLO.Science pH meters.
COLO.SCIENCE ELECTROCHEMISTRY
Match PRO6149 with compatible pH meters and electrochemical instruments
PRO6149 should be selected together with the meter input configuration. Use the electrochemical instruments overview and pH meter section to confirm compatible instrument families, pH electrode inputs, cable format, temperature compensation options and required accessories.
| Electrochemical Instruments | pH Meters |
COLO.SCIENCE KNOWLEDGE / OUTBOUND LINK
Learn more about pH measurement, calibration and water quality analysis
Correct pH measurement depends on electrode selection, calibration buffers, temperature compensation or temperature setting, storage solution, sample type and routine maintenance. Explore additional electrochemistry and water quality resources before selecting the final configuration.
| Read on COLO.Science → | NIST reference → |
Applications and laboratory value
Hot water and heated samples
PRO6149 is suitable for pH measurement in hot water checks and heated aqueous samples where a standard routine electrode may not provide sufficient temperature resistance.
Process and QC laboratories
The glass body, ceramic junction and Longlife reference system support demanding pH measurement workflows in chemical, pharmaceutical and quality control environments.
Routine laboratory replacement
PRO6149 is relevant when the laboratory requires a robust replacement electrode with S7 connector format and high-temperature operating capability.
Electrode and meter matching
The electrode must be matched with the correct meter input and cable. For standard BNC(Q9) pH meters, include a compatible S7-BNC(Q9) cable.
How to choose the correct high temp resistance electrode configuration
When selecting the PRO6149 high temp resistance electrode, the complete measurement setup should be checked, not only the pH range. Confirm the meter model, input connector, S7 cable requirement, sample type, expected working temperature, calibration procedure and whether the method requires temperature compensation before ordering.
COLO.Science can help match PRO6149 with compatible pH meters, S7-BNC(Q9) cables, calibration buffers, electrode storage solutions and accessories so that the final configuration supports the intended laboratory method and daily measurement workflow.
PRO6149 high temp resistance electrode for elevated-temperature pH measurement
The PRO6149 high temp resistance electrode is a practical pH composite electrode for laboratories that need pH measurement in hot or thermally demanding samples. The high-temperature working range from –5 to 110 °C makes the electrode useful for workflows where routine pH electrodes may be limited by temperature exposure, thermal cycling or demanding process conditions.
In daily use, the quality of pH measurement depends on more than the electrode specification. Buffer freshness, calibration frequency, sample temperature, temperature compensation method, electrode storage, junction condition and the selected pH meter all influence measurement stability. PRO6149 provides a robust glass-body composite electrode platform, while the final laboratory setup should be defined as a complete pH measurement system.
For users building a complete electrochemistry workflow, PRO6149 can be combined with compatible COLO.Science pH meters, calibration buffers, storage solution and the correct S7-BNC(Q9) cable where required. This helps reduce compatibility problems and ensures that the high-temperature pH electrode is used in a suitable measurement configuration.
Configuration notice
pH electrodes may be delivered or used in different configurations depending on the selected pH meter, connector/cable arrangement, temperature compensation method, calibration solutions and accessories. The official quotation defines the final scope of supply. Website content is provided for general product presentation and may not represent the exact delivered configuration. Specifications may change without notice.





