The measurement scale at left is not labled - is it supposed to be showing g/ml of specific gravity? If so, the top 3 & bottom 3 numbers are wrong.

The picture of this scale is not an enlarged view in proportion. This is a schematic. Thank you for your curiosity and seriousness. But you can't use this diagram to measure any battery fluid.

Is it suitable for testing glycol?

Yes. It is used to test glycol concentration and freezing point temperature. It is also used for other liquid tests.

Will this come with a box or a bag? Description says bag, but reviews say box...

I got a box with is and I believe a bag the refractometer sat in in the box. I gave mine to my old helper and ended up buying one at Fw Webb

How does it know the difference between glycol or DEF or battery water?

Not sure. Sometimes you just have to hit the I believe button.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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TRZ 4-in-1 Antifreeze Refractometer Ethylene Glycol, Propylene Glycol in Antifreeze Freezing Point Temperature and Concentration, AdBlue, DEF and Industrial Battery Fluid

Product ID: 325842696

🔬4-in-1 multi-fluid testing: antifreeze, AdBlue, battery fluid

🌡️Measures freezing point -84°F to 32°F

🛡️Corrosion & abrasion resistant durable build

Description

🛠️ Stay Cool, Stay Ahead: The Ultimate 4-in-1 Fluid Tester for the Proactive Millennial Manager

BUILT TO LAST - Rugged optical instrument with corrosion and abrasion resistance for reliable long-term use.
ALL IN ONE FLUID ANALYZER - Seamlessly test antifreeze, AdBlue urea levels, and battery specific gravity with one compact device.
USER FRIENDLY CALIBRATION - Zero calibration with water near 68°F ensures hassle-free, consistent accuracy without frequent maintenance.
PRECISION AT YOUR FINGERTIPS - Accurate freezing point & concentration readings for ethylene & propylene glycol, aligned with ASHRAE standards.
COMPLETE KIT FOR PROFESSIONALS - Includes pipettes, screwdriver, cleaning cloth, and storage bag—everything you need to maintain peak performance.

The TRZ 4-in-1 Antifreeze Refractometer is a precision optical instrument designed for professionals and DIY enthusiasts to measure freezing points and concentrations of ethylene glycol, propylene glycol, AdBlue, and battery fluids. Featuring a durable, corrosion-resistant build and easy zero calibration, it delivers ASHRAE-standard accuracy in a compact, all-in-one tool. The package includes essential accessories for immediate use and is backed by a 2-year warranty, making it an indispensable device for vehicle maintenance and fluid analysis.

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ASIN	B073Q2LSG9
Item model number	RHA-100ATC
Manufacturer	TRZ
Package Dimensions	32.51 x 14.1 x 4.29 cm; 320 g

TRZ 4-in-1 Antifreeze Refractometer Ethylene Glycol, Propylene Glycol in Antifreeze Freezing Point Temperature and Concentration, AdBlue, DEF and Industrial Battery Fluid

Description

Specifications

Common Questions