OTC 5025 DEF refractometer kit for accurate DEF concentration checks in the field.
OTC 5025 DEF refractometer kit for accurate DEF concentration checks in the field.

OTC 5025 DEF Refractometer Kit – Portable DEF Concentration Tester

Overview The OTC 5025 DEF Refractometer Kit is a compact, precision optical tool designed to help technicians...
Vendor: OTC
Availability: In stock
£145.14
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OTC 5025 DEF refractometer kit for accurate DEF concentration checks in the field.

OTC 5025 DEF Refractometer Kit – Portable DEF Concentration Tester

£145.14
OTC 5025 DEF refractometer kit for accurate DEF concentration checks in the field.

OTC 5025 DEF Refractometer Kit – Portable DEF Concentration Tester

£145.14
Description
Description
x

Overview

The OTC 5025 DEF Refractometer Kit is a compact, precision optical tool designed to help technicians quickly assess Diesel Exhaust Fluid concentration on site. Its clear prism and eyepiece-augmented reticle translate liquid density into a readable value, turning a simple sample into actionable data you can trust for routine SCR maintenance.

How it works

Place a liquid sample on the prism; light bends more as the liquid becomes more concentrated. The enlarged reticle presents a DEF reading on a scale that technicians use to evaluate the solution. Key details include a 0.5 percentage step, a 32.5% reference line, and an indicated range from 15% to 40%, with a waterline reference at 20°C.

What’s included

  • Refractometer
  • Dropper
  • Lens wipe cloth
  • Instructions and Quick Start Guide
  • Screwdriver
  • Case

Why it matters for your fleet

SCR-equipped engines rely on properly mixed DEF to support lower NOx emissions. By verifying DEF concentration, this kit helps technicians monitor and maintain the anti-emission process across a range of engines, including popular models from Detroit Diesel, Cummins, PACCAR, and Volvo/Mack.

Key specifications and use tips

  • Scale increments: 0.5 percentage points
  • Indicated range: 15%–40%
  • 32.5% target line for reference
  • Waterline reference at 20°C

Real-world scenarios

From truck stops to maintenance bays and fleet yards, the kit enables quick, field-ready checks. Its portable design supports on-the-spot verification during routine servicing or short stops at loading docks, helping keep SCR systems operating smoothly and efficiently.

FAQ

Q: What is included in the OTC 5025 DEF Refractometer Kit?

A: The kit includes the refractometer, dropper, lens wipe cloth, instructions and quick start guide, screwdriver, and case.

Q: How can the refractometer help maintain SCR systems?

A: It helps verify the DEF concentration to support proper SCR operation.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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