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Clear Epoxy-bodied, Gel-filled Combination Alpha® Electrodes


Item# PHE-4201

In stock

Lead Time (If not in stock): 7 weeks
Clear Epoxy-bodied, Gel-filled Combination Alpha® Electrodes PHE-4201 PHE-4201
  • Five Electrode Styles
  • Covers Entire 0 to 14 pH Range
  • Clear Epoxy Body Construction
  • Fast Responding: 95% in Less than 1 Second

PHE-4201 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Process Connection Type
Measurement Type
Wetted Materials
Max Temperature

OMEGA Engineering is pleased to offer a complete line of laboratory pH electrodes. The PHE-4200 Series are gel-filled, combination pH electrodes with a unique clear epoxy body design. With five electrode styles to choose from, you’re sure to find one suitable for your application. OMEGA ® PHE-4200 electrodes offer reliable quality at a reasonable cost. The electrodes measure the entire pH range from 0 to 14 pH units at 0 to 100°C (32 to 212°F) and feature an Ag/AgCI reference and polypropylene liquid junction. Each electrode comes in a soaker storage bottle to keep the electrode moist and ready for use. Shelf life is guaranteed for one year, and the OMEGA quality certificate provided assures that these electrodes meet the most stringent quality control requirements.
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Rated 5 out of 5 by from 10/10 always repurchase Durable and fit for purpose. Our company uses it to test glues and it is easy to clean without damaging any part of the component.
Date published: 2023-04-20
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Are there any installation arrangement requirements to be aware of? Does entire length need to be submerged? Does orientation matter?

Asked by: Trevor
Thank you for your question? pH probes should be mounted vertically or at least 15deg above the horizontal plane in the direction of flow. At a minimum the bulb at the end of the probe needs to be fully submerged for an accurate reading.
Answered by: application engineer je
Date published: 2019-07-05

How long is the cable on this electrode?

Asked by: TJ Lonza
Thank you for your inquiry about the pH probes. It has 2.5 feet of cable with a BNC connector.
Answered by: Application Engineer JC
Date published: 2022-12-01

Will this probe work in D ionized water?

Asked by: Mary
Thank you for your inquiry. We would recommend the PHE-4202-LC for DI water. It is the same as the PHE-4202 but for low conductivity fluids. This will be a custom probe so please contact us at for price and lead time.
Answered by: AS Engineer
Date published: 2019-11-17
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