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Electrodes & Sensors

See our selection of electrochemical electrodes and sensors.

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  1. 201DJ-C Double-Junction pH Electrode

    Apera Instruments

    AI3115-EA

    $43.00

    Special Price $32.88

    LabSen® 231 Combination pH Electrode for Wastewater, Suspension, and Emulsion Backed by proprietary Swiss sensor technology and materials, the LabSen 231 Combination pH Electrode is ideal for testing emulsion, suspension, wastewater, and samples containing protein and sulfide. Its 2-pore double junction structure and solid electrolyte make it hard to be contaminated and highly resistant to compression. Long-Life Reference System – The LabSen 231 pH electrode adopts a long-life reference system, which is composed of a glass tube, AgCl and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when temperature changes. It improves the stability of reference electrode and prolong the service life of the electrode. Polymer Electrolyte – The polymer electrolyte is in direct contact with test samples. The anti-pressure capacity can reach up to 6 bars, making it ideal for testing suspension and wastewater. Special Glass Membrane – The LabSen 231 pH electrode adopts a Half-Balll glass membrane, which is highly resistent to general impact (the traditional glass bulb membrane is a lot more fragile), and can be tested in high temperature samples (up to 176°F). The electrode is backed up with a 6-month warranty by Apera Instruments. Learn More
  2. LabSen 211 Standard Combination pH Electrode

    Apera Instruments

    AI3101-EA

    $115.00

    Special Price $87.94

    LabSen® 211 Professional Glass Combination pH Electrode for regular water solutions in scientific research and quality control, TRIS buffer compatible, BNC Connector Proprietary pH sensor technology and materials from Switzerland Unique LabSen blue hemispherical glass membrane, faster response rate, better repeatability, and impact-resistant Long-Life Reference System, improving the stability of reference electrode and prolong the service life of the electrode Compatible with TRIS buffer solutions 6-Month Warranty fulfilled by Apera Instruments Backed by proprietary Swiss sensor technology and materials, the Apera Instruments LabSen 211 Combination pH Electrode Sensor is ideal for precise regular water solutions and water pH testing in scientific research and quality control. This electrode is compatible with TRIS buffer solutions. LabSen unique blue hemispherical glass membrane – faster response time, better repeatability, and built tough, highly resistant to general impact (totally differentiates from the traditional fragile glass bulb membrane); and can be tested in high temperature samples (up to 225°F). The LabSen 211 Combination pH Electrode Sensor adopts a Long-Life Reference System, which is composed of a glass tube, AgCl and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when temperature changes. It improves the stability of reference electrode and prolong the service life of the electrode. The electrode uses a BNC connector, compatible with any pH meters that use BNC connectors, such as Apera's MP511, SX811, PH700, PH800, PC800, PH820 and PC820. Temperature sensor is not built-in. Users need to have a separate temperature probe (ex: Apera MP500) to enable ATC or manually input temperature to realize temperature compensation. The electrode is backed up with a 6-month warranty fulfilled byApera Instruments. Learn More
  3. 301Pt-C Plastic Combination ORP Electrode

    Apera Instruments

    AI1303-EA

    $85.00

    Special Price $65.00

    301Pt-C ORP Combination Electrode, BNC Connector Equpped with high-Quality Platinum ORP sensor Gel KCL electrolyte adopted; No need for refilling. Standard BNC connector 6-Month Warranty fulfilled by Apera Instruments The Apera Instruments 301Pt-C Combination ORP Electrode/Tester/Sensor is equipped with a high-quality platinum ORP sensor and gel KCL electrolyte (no need for refill), suitable for regular water solutions testing and wastewater treatment. With the standard BNC connector, the electrode is compatible with any ORP meters that use BNC connectors. This electrode has a 6-Month limited warranty fulfilled by Apera Instruments, LLC. The Apera Instruments 301Pt-C Combination ORP Electrode has a BNC connector which is compatible with select portable and benchtop meters. These models include: PH700, PH800, PC800, PH820, PC820, and SX823-B. Learn More
  4. DO8032 Luminescent Cap

    Apera Instruments

    AI4103-EA

    $110.00

    Special Price $90.59

    DO8032 Luminescent Cap Learn More
  5. pH Replacement Flat Probe (PH60F-E)

    Apera Instruments

    AI1203-EA

    $63.00

    Special Price $48.18

    PH60F-E Replacement Probe for PH60F Surface pH Tester Measuring Range: -2.00 - 16.00 pH, 0 - 50°C Flat surface glass membrane with built in tempurature sensor, made for surface pH testing such as: skin, paper, fabrics and micro samples Gel KCL electrolyte, maintenance-free Works well for 12-24 months under proper use and care The Apera Instruments PH60F-E Replacement Probe is the replacement probe for PH60 Series Premium Pocket pH testers, including PH60F, PH60S, PH60, and PC60. This probe features a flat glass membrane sensor with a built-in temperature sensor and maintenance-free gel KCl electrolyte, made for surface pH testing such as: skin, fabrics, paper, Leather and micro-volume solution samples. This probe also works well for common aqueous solution testing. CE-Certified and comes with a 6-Month Warranty. Learn More
  6. Conductivity Replacement Probe(EC60-E)

    Apera Instruments

    AI1209-EA

    $46.00

    Special Price $35.18

    EC60-E Replacement Probe for EC60 Pocket Conductivity/TDS/Salinity Tester EC Measuring Range: 0.1 µs to 20.00 MS; TDS Range: 0.1 ppm - 10.00 ppt; Salinity Range: 0 - 10.00 ppt Apera's unique Brush-Resistant Platinum Black Sensor ensures accurate Conductivity measurement in a wide range Built-in temperature sensor Suitable for common aqueous solution, pure water and waste water's Conductivity/TDS/Salinity testing The Apera Instruments EC60-E Probe is the replacement probe for EC60 Portable Pocket Meter/Tester as well as the PC60 pH/Conductivity Portable Pocket Meter/Tester. This probe features Apera's unique Brush-Resistant Platinum Black (BPB) sensor, ensuring accurate conductivity measurement in a wide range (0.1 µs to 20.00 MS). It enables you to Test conductivity (EC), TDS and salinity at the same time. Its TDS range is 0.1 ppm to 10.00 PPT; salinity range is 0 to 10.00 PPT. Works great for common aqueous solution and waste water's Conductivity test. CE Certified with a 6 moth warranty. Learn More
  7. DJS-0.1-C Pure Water Conductivity Electrode (K=0.1, BNC connector)

    Apera Instruments

    AI1310-EA

    $180.00

    Special Price $137.65

    DJS-0.1-C Pure Water Conductivity Electrode (K=0.1, BNC connector) Learn More
  8. 2301T-F Conductivity Electrode (for 700, SX823-B)

    Apera Instruments

    AI1305-EA

    $70.00

    Special Price $53.53

    2301T-F Conductivity/Temp. Electrode (K=1), Range: 0.5 µS/cm to 200 mS/cm, BNC/RCA Connector Built-in temperature sensor, testing conductivity and temperature simultaneously (supports Auto.Temp. Compensation) Apera's unique BPB conductivity electrode/tester/sensor, ensuring high accuracy in a wide range Equipped with a detachable probe storage cap, keeping the sensor hydrated when not in use 6-Month Warranty fulfilled by Apera Instruments The Apera 2301T-F Conductivity/Temp. Electrode/Tester/Sensor adopts Apera's unique BPB (Brush-resistant Platinum Black) conductivity sensor technology, which ensures high accuracy in a wide range of conductivity measurement. The built-in thermistor tests temperature simultaneously and allows for auto temperature compensation. It is ideal for both regular laboratory and in-field use. Compatible Apera Models: EC700, EC800, PC800, EC820, PC820; May NOT be compatible with other brands' meters because the temperature unit might be incompatible. Technical Specifications Measuring Range: 0.5 µS/cm to 200 mS/cm Electrode Constant: K=1.0 ±0.2cm^-1 Dimension: ø12*155mm Connector: BNC/RCA Learn More
  9. LabSen 241-3 Micro pH Electrode

    Apera Instruments

    AI3104-EA

    $322.00

    Special Price $246.24

    LabSen® 241-6 Professional Combination pH Electrode for Small Samples (>0.2mL), BNC Connector Proprietary pH sensor technology and materials from Switzerland Special LabSen semi-micro cylindrical sensor tip, suitable for small-volume pH measurement (>0.2mL) BNC-Connector 6-Month Warranty fulfilled by Apera Instruments Backed by proprietary Swiss pH sensor technology and materials, the LabSen 241-6 Micro Combination pH Electrode is designed for small-volume samples (=0.2ml). Unique Glass Membrane – The LabSen 241-6 pH electrode adopts a semi-micro cylindrical glass membrane (6mm in diameter), making small-sample pH testing easier than ever, and can be tested in high temperature samples (up to 212°F). Long-Life Reference System – composed of a glass tube, AgCl and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when temperature changes. It improves the stability of reference electrode and prolong the service life of the electrode. The electrode uses a BNC connector, compatible with any pH meters that use BNC connectors, such as Apera Instruments MP511, SX811, PH700, PH800, PC800, PH820 and PC820. Temperature sensor is not built-in. Users need to have a separate temperature probe (ex: Apera Instruments MP500) to enable ATC or manually input temperature to realize temperature compensation. The electrode is backed up with a 6-month warranty by Apera Instruments. Learn More
  10. ORP Replacement Platinum Probe (ORP60-E)

    Apera Instruments

    AI1207-EA

    $60.00

    Special Price $45.88

    ORP60-E Replacement Probe for ORP60 Pocket ORP Tester ORP (mv) ORP Range: ±1000 mV, Temperature Range: 0 - 50°C Platinum sensor with maintenance-free gel KCL electrolyte Works well for 12-24 months under proper use and care Made for common Water solution testing analysis and wastewater's ORP testing The Apera Instruments ORP60-E Replacement Probe is the replacement probe for ORP60 Pocket ORP Tester and PH60 series pocket pH testers/meters, including PH60, PH60S, PH60F. This probe features a Platinum ORP sensor with a built-in temperature sensor and maintenance-free gel KCl electrolyte. Works great for common water solution testing analysis and wastewater’s ORP measurement. CE-Certified and comes with a 6-Month Warranty Learn More
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