Diesel-powered vehicles will be required to meet strict new EPA emissions guidelines beginning in 2010. In preparation, manufacturers are employing a number of strategies in order to conform to these regulations. Selective Catalytic Reduction (SCR) is one such technology.

Selective Catalytic Reduction systems utilize liquid urea, a nitrogen-based compound, to treat diesel exhaust gases prior to them entering a special catalytic converter. The fluid is known as Diesel Exhaust Fluid (DEF) in the US and AdBlue® in Europe. It consists of a very specific concentration of aqueous urea in demineralized water. Injected into the hot exhaust gases as a fine mist, urea turns to ammonia and converts harmful nitrogen oxides (NOx) into harmless nitrogen and water vapor.

The Palm Abbe is the best DEFense against diluted DEF.

The proper concentration of Diesel Exhaust Fluid (DEF) is crucial to mitigating harmful NOx emissions and prolonging the life of the SCR components. Even concentration variations of as little as +/-0.8% will prevent a DEF fluid from meeting the specifications mandated by International Standards Oganization (ISO) standards. DEF dilution or contamination can impact system performance and maintenance costs. The biggest contamination threat is water dilution but without the proper tools it is nearly impossible to know if a DEF supply has been diluted. 

Get DEFinite results in just seconds.

The MISCO Palm Abbe DEF-201 refractometer is the ideal method for testing DEF fluid to ensure it is at the correct concentration and that it has not been diluted or tampered with. It only takes a few drops of DEF and a couple of seconds to perform a test and the results are precise to +/-0.1% urea concentration. 

Once a few drops of sample have been added to the stainless-steel well, it only takes the press of a single button to initiate a reading. Within seconds, the urea concentration will be displayed on the large 24-character backlit LCD display. The refractometer can also be calibrated to water with the press of a button.

Key to the precision and accuracy of the refractometer is MISCO proprietary optical engine. A combination of high-index sapphire optics and a detector array with 1,024 elements. Special hardware and software automatically temperature compensates readings over a wide temperature range.

The MISCO Palm Abbe is the DEFinitive choice in DEF Testing.

The American Petroleum Institute (API), a non-profit trade association and advocacy group for the petroleum and natural gas industry, is charged with certifying producers of Diesel Exhaust Fluid (DEF) for Selective Catalytic Reduction (SCR) equipped diesel engines in North America. The best way to ensure a good DEF fluid is to only purchase urea which carries API certification and frequently test the fluid with a MISCO refractometer to make sure that it meets quality specifications.

Only a Refractometer can tell if it’s DEFinitely DEF. 

Options include; additional scales for measuring urea density, specific gravity, and freezing point. As well as, engine coolant concentration and freeze point, brake fluid water content or boil point, and windshield washer fluid. Also available is a rubber armor jacket (in one of three different colors) and a virtually indestructible storage case.

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Download a Copy of our Free Guide: "Refractometers for Testing Urea-Based Diesel Exhaust Fluid (DEF) in SCR Equipped Diesel Engines"		Rugged Rubber Armor - Adding a Rubber Armor Jacket to a Palm Abbe refractometer increases its durability and provides a better grip. Made of high-grade silicone rubber, the Rubber Armor Jacket is custom fit and will help protect your Palm Abbe refractometer from bumps and scratches. Fits all MISCO Palm Abbes. Available in Three Colors: ORANGE | BLACK | GRAY	Virtually Indestructible Proof Case Our rugged Proof Case is water-proof, crush-proof, dirt-proof, dust-proof, drop-proof, rain-proof, snow-proof, sink-proof, even goof-proof. The case has a fitted foam insert that cushions your refractometer in the event of rough handling. Two heavy-duty latches secure the lid and provide a waterproof seal.