Scientific Equipment Supplier
Vernier Software and Technology Data Logger Distributor Log in 
Cart/Quote $0 ex GST0 items



Vernier ORP Sensor

Order code: ORP-BTA
Purchase QTY: (Each)1+    
Scientrific's price  $234.00    
Note: Prices do NOT include GST or freight

The Vernier ORP sensor measures the ability of a solution to act as an oxidising agent or reducing agent. ORP stands for oxidation-reduction potential. ORP electrodes are often used to measure the oxidising ability of chlorine in swimming pools or to determine when the equivalence point has been reached in an oxidation-reduction reaction.

The Vernier ORP can measure redox potential in the range of –450 to +1100 mV. Readings toward the positive region of this range indicate a strong oxidising agent, while readings toward the negative region indicate a strong reducing agent.

ORP Electrode Specifications:
• Sealed, gel-filled, epoxy body, Ag/AgCl reference
• Storage solution pH-4/KCl (10 g KCl in 100 mL buffer pH-4 solution)
• 1 metre coaxial cable with BNC connector
• Temperature range 0–60ºC
• 12 mm OD
• Impedance: ~20kΩ at 25ºC
• ORP element 99% pure platinum band sealed on a glass stem

Electrode Amplifier Specifications:
(included with each ORP Sensor)
• Calibration (mV)
     Slope: 466.875
     Intercept: –559.793
• 13-bit resolution (SensorDAQ): 0.25 mV
• 12-bit resolution (LabPro, LabQuest 2, LabQuest, LabQuest Mini, TI-Nspire™ Lab Cradle, Go! Link or EasyLink): 0.5 mV
• 10-bit resolution (CBL 2™): 2.0 mV
• Power: 7 mA @ 5VDC
• Input Range: –450 to 1100 mV

Do not completely submerge the sensor as the handle is not waterproof.

Educational use only:
Vernier and Kidwind products are designed for educational use. They are not appropriate for industrial, medical or commercial applications. Details

  • Warranty: 5 years
    • Package size (HxWxD): 57 x 57 x 254mm
    • Packed weight: 150g

      Last edited 19th May 2022

      This product is used in teaching these Australian Curriculum codes:
      ACSCH103 - Equilibrium acids and redox reactions - Oxidation and reduction - A range of reactions, including displacement reactions of metals, combustion, corrosion, and electrochemical processes, can be modelled as redox reactions involving oxidation of one substance and reduction of another substance
      ACSCH110 - Equilibrium acids and redox reactions - Oxidation and reduction - Cell potentials at standard conditions can be calculated from standard electrode potentials; these values can be used to compare cells constructed from different materials
      ACSCH107 - Equilibrium acids and redox reactions - Oxidation and reduction - Electrochemical cells, including galvanic and electrolytic cells, consist of oxidation and reduction half­ reactions connected via an external circuit that allows electrons to move from the anode (oxidation reaction) to the cathode (reduction reaction)
      ACSCH108 - Equilibrium acids and redox reactions - Oxidation and reduction - Galvanic cells, including fuel cells, generate an electrical potential difference from a spontaneous redox reaction; they can be represented as cell diagrams including anode and cathode half­equations
      ACSCH104 - Equilibrium acids and redox reactions - Oxidation and reduction - Oxidation can be modelled as the loss of electrons from a chemical species, and reduction can be modelled as the gain of electrons by a chemical species; these processes can be represented using half­ equations
      ACSCH106 - Equilibrium acids and redox reactions - Oxidation and reduction - The relative strength of oxidising and reducing agents can be determined by comparing standard electrode potentials

      Click a curriculum code to see other products that relate.

      Similar Products:From
      TMP-BTA - Vernier Stainless Steel Temperature Probe$89.00
      PH-BTA - Vernier pH Sensor$220.00
      GDX-ORP - Vernier Go Direct ORP Sensor$253.00
      GDX-EA - Vernier Go Direct Electrode Amplifier$160.00
      GDX-ORP-BNC - Vernier Go Direct ORP BNC Electrode$131.00
      EA-BTA - Vernier Electrode Amplifier$122.00
      ORP-BNC - Vernier ORP Replacement Electrode$129.00

      CatalogueVernier Catalogue K-12
      CatalogueVernier Catalogue Uni
      ExperimentElectrochemistry Voltaic Cells
      ExperimentMC33 Oxidation Reduction
      User ManualGetting Started - Connecting your sensor
      User ManualVernier ORP Sensor

      Note: Prices do NOT include GST or freight