The LabSen 851-3 Glass Pre-Pressurized Combination pH Electrode, engineered with proprietary Swiss sensor technology and materials, delivers reliable pH measurement across high-viscosity solutions including cosmetics, paints, resins, adhesives, and similar applications. The pre-pressurized reference system features an internal pressure charge that maintains continuous electrolyte flow from the junction point, preventing blockage even in challenging high-viscosity test environments. Compatible with all BNC-equipped pH meters including Apera Instruments MP511, SX811, PH700, PH800, PC800, PH820, and PC820. Note: Temperature sensor not integrated—external temperature probe (such as Apera MP500) required for ATC compensation or manual temperature input.
Technical Specifications
| Material |
Lead-free glass |
| Temperature Sensor |
No |
| Junction Type |
Ceramic |
| Reference System |
Pre-Pressurized |
| Electrolyte |
Gel |
| Length |
120 mm |
| Diameter |
12 mm |
| Membrane Shape |
Half Ball |
| Measurement Range |
0–14 pH |
| Operating Temperature Range |
0–130°C (32–266°F) |
| Connector Type |
BNC |
| Cable Length |
1 m |
Applications
- pH measurement in cosmetic formulations and suspensions
- Paint and coating viscosity quality control
- Resin production and processing monitoring
- Adhesive composition analysis and verification
- Industrial high-viscosity fluid testing
- Pharmaceutical and cosmetic R&D applications
- Chemical production process control
Frequently Asked Questions
Why does the LabSen 851-3 have a pre-pressurized reference system?
The pre-pressurized design maintains electrolyte flow through the ceramic junction even when measuring high-viscosity solutions. This prevents the junction from becoming blocked by thick or sticky materials, ensuring reliable, continuous pH measurement.
Is a temperature sensor built into this electrode?
No, the LabSen 851-3 does not include an integrated temperature sensor. To perform automatic temperature compensation (ATC), you must use an external temperature probe such as the Apera MP500, or manually input the solution temperature into your compatible pH meter.
Which pH meters are compatible with the LabSen 851-3?
The electrode features a universal BNC connector and is compatible with all Apera Instruments pH meters equipped with BNC input, including MP511, SX811, PH700, PH800, PC800, PH820, and PC820 models.
What is the maximum operating temperature for this electrode?
The LabSen 851-3 operates reliably across the temperature range of 0–130°C (32–266°F), making it suitable for both ambient and elevated-temperature measurements.
Can this electrode be used for low-viscosity solutions?
Yes. While designed and optimized for high-viscosity applications, the electrode delivers accurate pH measurement across all solution types, including aqueous and low-viscosity formulations.