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$Robinair 75240 Coolant and Battery Refractometer$

Robinair 75240 Coolant and Battery Refractometer

Q: Does this unit measure the coolant PH level of a vehicle?

No. A refractometer only measures the concentration of anti-freeze in a coolant solution. To measure pH I recommend coolant test strips (visit www.cooltrak.com). Another way to test for coolant acidity is with a digital voltmeter. Set to 2 volt dc scale, black lead to battery negative terminal, red lead touching only liquid coolant, preferably in the radiator. If the radiator does not have a cap on it, measure in the de-gas bottle (overflow or recovery tank). Anything higher than 0.3 volts dc indicates acidic coolant and time for a flush and fill. Hope you found this helpful!

Q: Just to clarify ,HOAT,OAT and G-05 are also able to be tested ?

Yes. It is the concentration of ethylene (or propylene) glycol in water, not the concentration of chemical additives, that determines the freeze point of an antifreeze mixture. HOAT, OAT and other modern automotive coolants are still primarily ethylene glycol blends regardless of their additive packages. Hope this helps.

Q: If I use this, should I ignore manufacturer's mileage-based coolant recommendations? Is there any other test that should be performed?

That is a big question and I'd say that if you are replacing the coolant sooner than the manufacturer recommends then there's obviously no problem. The percentage of ethylene glycol in the mix is important but you also have many inhibitors and lubricants that also should be there...and that deteriorate and leave the mix over time. I know of no other common tests other than a test for exhaust residue in the coolant to check for a leaking head gasket.

Q: does this come with a hard case?

Define "hard"! Yes, it comes with the plastic case shown in the product photo. It's durable enough to withstand life in a toolbox, but not enough to run over with your truck!

4.7/5

Product ID: 2480262

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🔍Precision optics

🧪Complete testing kit

🌡️Scale: -60°F to +32°F

Frequently Bought Together

Description

🔧 Elevate Your Testing Game with Precision!

BUILT TO LAST - Rugged aluminum housing ensures durability in any environment.
COMPREHENSIVE KIT - Includes everything you need for immediate testing.
PORTABLE PRECISION - Lightweight and compact for easy transport.
USER FRIENDLY DESIGN - Ultra-smooth focusing for effortless operation.
MEASURE WITH CONFIDENCE - Accurate freeze point measurements for coolant systems.

The Robinair 75240 Coolant and Battery Refractometer is a high-quality instrument designed for measuring the freeze point of propylene or ethylene glycol-based cooling systems and checking battery electrolyte strength. It features a scale range from -60°F to +32°F, ultra-smooth focusing optics, and comes with a complete kit for immediate use, all housed in a rugged aluminum casing.

Specifications

Manufacturer	Robinair
Brand	Robinair
Model	75240
Item Weight	1 pounds
Product Dimensions	10.4 x 8.2 x 5.4 inches
Country of Origin	China
Item model number	75240
Is Discontinued By Manufacturer	No
Manufacturer Part Number	75240
Voltage	1.5 Volts

Have a Question? See What Others Asked

Does this unit measure the coolant PH level of a vehicle?

Just to clarify ,HOAT,OAT and G-05 are also able to be tested ?

If I use this, should I ignore manufacturer's mileage-based coolant recommendations? Is there any other test that should be performed?

does this come with a hard case?

Common Questions

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