Test Budha Logo
This website is a participant in the Amazon Services LLC Associates Program. We are reader-supported. If you buy something through links on our site, we may earn an affiliate commission at no additional cost to you. This doesn't affect which products are included in our content. It helps us pay to keep this site free to use while providing you with expertly-researched unbiased recommendations.

The Best Def Tester of 2021

  Updated on 19 October, 2021

Generated From 25K+ Reviews!
Bestseller No. 1
OTC 5025 Diesel Exhaust Fluid (DEF) Refractometer
  • The refractometer is a portable precision optical instrument used for measuring the diesel...
  • When a liquid sample is placed on the prism the light passing through it is bent and the...
  • The refractometer contains a reticle or scale that is enlarged through the eyepiece to...
  • EPA regulations require all diesel engines manufactured on or after January 1 2010 to meet...
Bestseller No. 2
Performance Tool W16500 Professional DEF Tester
  • Professional disc type DEF, Diesel Exhaust Fluid tester.
  • For most diesel power cars, light duty and semi-trucks from 2010 to current.
  • Design to test the urea purity to maintained 32.5 percent.
  • Floating discs will accurately display urea levels
Bestseller No. 3
DEF Refractometer for Measuring Diesel Exhaust Fluid...
  • The refractometer is a portable precision optical instrument used for measuring the diesel...
  • Help you know your diesel exhaust fluid condition in a quick and easy way.
  • Features automatic temperature compensation (ATC)
  • Just need 2-3 drops of solution, you can get accurate readings.
Bestseller No. 4
AMTAST Digital Coolant Refractometer for Car Antifreeze Urea...
  • Antifreeze Refractometer for car. Designed for measuring coolant and antifreeze based on...
  • Requires only a few drops of sample Measurement in 2 seconds
  • Power off: Meter will power off within one minute if no any operation
  • With temperature display, freely switch operating. Automatic Temperature Compensation is...
SaleBestseller No. 5
Thexton THE108 Tester
  • Easy to read discs are magnified by convex design
  • SAN plastic barrel
  • One-piece bulb and neoprene dip tube
  • Country of Origin : United States

How We Score

Learn More
Our app considers products features, online popularity, consumer’s reviews, brand reputation, prices, and many more factors, as well as reviews by our experts.

Click on products MORE INFO button to explore, or read more About Us

Buyer's Guide: Def Tester

Def Tester

Universal Professional Def Tester by Thexton is an exceptional tool for testing the exhaust gas from your engine. The DEF-TCE performs an accurately and permanently non-destructive test of your exhaust system performance. The DEF-TCE is built to check the excess urea level of diesel exhaust fluid. Convex shaped disc-style clear plastic tube is magnified by convex lens design of this clear, reusable, disc-type plastic barrel.

Two separate testing procedures are available with the DEF-TCE: High Pressure (HP) and High Flow (HF). The DEF-TCE features an auto shut off valve to continually monitor high pressure and low flow conditions. You simply turn on the def tester, set the pressure and watch the gauge move rapidly through the visible register until the pressure reaches a pre-determined point and then it will automatically shut off.

Another option available with the Def Tester is the High Flow test. The test is performed with one of two different options. The first is a conical mass flow method that uses a conical tube in order to measure the flow of diesel exhaust fluid. The second option is a hydrometer that uses the principle of hydrodynamic measurement to measure the amount of flow of urea gas in diesel exhaust fluid. Once the gauge reaches a pre-determined speed, the valve shuts off automatically to prevent further excessive levels of moisture from entering the urethane.

The Universal Professional Def Tester product image is easy to read and provides precise measurements of performance related parameters. This includes maximum airflow, minimum temperature, and total pressure. The urethane is highly durable and does not react to the operation in any adverse manner. This makes the product easy to work with and allows for an expedient installation process. The product images also include detailed performance data sheets for each individual component, which allows the end-user to see the product performance in real time.

The third option that can be used in conjunction with the urethane Producers Universal Product Tester, is the High Flow Adhesive Pressure Washer. The High Flow Adhesive Pressure Washer is a portable unit that is designed specifically for the installation of floating discs in diesel exhaust systems. This is because the device's nozzle eliminates all need for conventional drying techniques. In other words, the use of the pressure washer eliminates the need for mechanical grinding or any type of mechanical adhesion. This allows the user to enjoy the benefits of having clean and dry pipes at any time.

Furthermore, the high-performance tool professional def tester utilizes a unique High-Performance Adhesive Pressure Washer with a pre-installed stainless steel ball. The ball is specially designed to meet or exceed all requirements set forth by the United States Environmental Protection Agency, or EPA. The ball is extremely stable, has high strength, and has excellent collision and abrasion resistance capabilities. The ball uses a specially designed mixing chamber to distribute the urea and allow for complete adhesion of the floating discs.

Another alternative option for testing water pressure is to use a Portable Water Quality Detector. Some devices will perform a variety of tests including the pressure, temperature, turbidity, pH, and contaminant concentration. Additionally, some devices will also conduct additional tests such as the chemical specification, oxygen toxicity, and carbon monoxide emission. Additionally, these devices can also analyze the water for hardness, turbidity, and organic contamination. Another advantage of using a detector is that it can be conveniently carried around on the worker's person, and can easily be removed without causing any damage to the equipment. It has the advantage of being fully portable and can easily be used while on the job.

Finally, the most popular type of def tester available to contractors is the Portable Air Compressor/Deflator. This type of tester uses propane or natural gas to power the air release valve, which then seals the gas within the tank. It provides a convenient way to test water for hardness, turbidity, and pH. This def tester also performs a final analysis, including an estimate of the cost of replacement pipes.