10 Best Antifreeze Tester of August 2025

• Easily tests for anti-freeze/anti-boil protection
• Allows visual inspection for rust and sediment
• Provides a quick and easy method to safely collect a sample and measure coolant concentration
• Helps in ensuring good corrosion protection
• Assists in preventing freeze-ups and boil-overs
• Fit Type: Universal Fit

Prestone

• EFFORTLESSLY TEST YOUR ANTI FREEZE MIXTURE: Antifreeze, also known as coolant, is designed to prevent water from freezing up in cold climates and to prevent your engine from overheating which can cause mechanical breakdowns and engine failure; Avoid these issues by testing your coolant mixture with the ABN Deluxe Car Antifreeze Coolant Test Kit
• BUILT TO LAST: Constructed of premium plastic and rubber materials, this antifreeze tester is designed to easily test freezing and boiling temperatures of your coolant to water solutions; The large rubber bulb and 5.5-inch (14 cm) rubber tube makes it easy to suck liquid into the small plastic reservoir; Easy to read stickers allow you to test the solution and provides instructions; Flush out with water after each use for accurate readings
• CLEAR TESTER FOR VISUAL INSPECTION: As a bonus, the clear reservoir allows you to inspect the condition of the antifreeze in your vehicle; Easily inspect color and for any rust, sludge, or other sediments
• EASY TO READ HYDROMETER SCALE: The clear capsule contains sensitive pointers that measure the freezing and boiling points of the liquid in both Celsius and Fahrenheit; These pointers are easier to read than standard coolant test strips because you do not need to focus on the color or PH balance to understand the freeze and boiling points of your solution; One side of the tester is labeled with freeze point scale while the other side is labeled with boiling point scale
• COMPATIBLE WITH ALL ETHYLENE GLYCOL ANITFREEZE: Works with all ethylene glycol coolants including GM Dex-Cool; This tester provides immediate results on the freezing and boiling points of your coolant to water mixture; Use vehicle manual and geological location to decide on the best ratio for your vehicle

ABN

• 4 IN 1 Function: ●Measuring specific gravity of rechargeable battery acid: 1.100~1.400kg/L, ●and freezing point of automobile antifreeze based on ethylene glycol or propylene glycol : 58℉ to 32℉/-50 to 0 ℃, ●windshield wash Fluid (SRF1): -40℉ to 32℉/ -40 to 0 ℃, ●Adblue the Urea Concentration in automobile diesel exhaust fluid (DEF) :30% to 35%
• Quick& Easier Measuring: Just 2 or 3 drops and wait for few seconds, then get the accurate reading. The antifreeze tester is same accuracy as a expensive one but more affordable. Less samples than a traditional Hydrometer.
• Automatic Temperature Compensation: The antifreeze coolant tester with ATC function can automatically compensated when ambient temperature changes, excellent eliminate the deviation, quickly and easier get the precise readings.
• Portable & Durable: This antifreeze tester is made of non-staining aluminum and ABS rubber, durable and resistant to abrasion. Lightweight and convenient to carry and easy to use.
• Car Owners’ Helper: The optics antifreeze test is a convenient tool can help you to check your automobiles’ battery fluid battery acid, antifreeze coolant, windshield water fluid and Adblue to protect your cars.

RZ

• Readings in Celsius and Fahrenheit
• Number of floating discs measures level of protection
• Temperature compensating tester is accurate whether coolant is hot or cold
• Package Dimensions: 5.842 L x 31.75 H x 5.842 W (cm)

Thexton

• Function 1: Measuring freezing point temperture of ethylene glycol or propylene glycol based automobile antifreeze coolant. Scale range: ethylene glycol base: -84°F-32°F, propylene glycol based -60°F-32°F
• Function 2: Measuring concentration of ethylene glycol or propylene glycol based automobile antifreeze coolant. Scale Range: ethylene glycol base: 0-70% propylene glycol based 0-63%
• Function 3:Measuring specific gravity of battery acid and provide a quick reference of battery charge condition. Scale Range:1.100~1.400kg/l
• Features automatic temperature compensation: makes it more convenient to use in different temperature.
• Quick and easy: Just need 2-3 drops of solution and a few seconds, you can get accurate readings. And no battery needed.

aichose

• Easy to read scale & pointer
• Freezing to boiling points for anti-freeze, calibrated in °C and °F

Performance Tool

• 6 SCALES : (1) Battery Fluids, (2) Ethylene Glycol Freezing Point, (3) Propylene Glycol Freezing Point, (4) Cleaning Fluids Freezing Point, (5) SRF1 - Screenwash antifreeze based on Isopropyl alcohol (IPA ), (6) Adblue
• Cushioned with soft and comfortable non-slip rubberized grip, insulate test solution from body heat.
• Measure battery fluid condition (density of the electrolyte and each scale division corresponds to 0.01g/cm3).
• Also measures screenwash antifreeze (windshield washer fluid) based on ethanol as well as on isopropyl alcohol. And check the urea concentration in AdBlue.
• Designed to measure coolants and antifreezes based on ethylene glycol or propylene glycol

Gain Express

• 1.[ Antifreeze Refractometer ] Designed for measuring coolant and antifreeze based on ethylene glycol or propylene glycol ,battery fluid condition and screenwash antifreeze (windshield washer fluid) based on ethanol as well as on isopropyl alcohol. And check the urea concentration in AdBlue
• 2.[ Measuring Range ] Battery fluid 1.10~1.40kg/l ;Propylene Glycol: -50°C -0°C ; Ethylene Glycol: -50°C -0°C ;AdBlue: 30 to 35%;Screenwash/SRF1:-40~0°C
• 3.[ Easy to use ] Place 2 - 3 drops of sample onto the prism, and then look through the eyepiece for the results
• 4.[ Convenient to store ] Compact in size and light in weight, packed with a plastic case, convenient to store and carry around
• 5.[ Application ] This tool is used worldwide by truck and automotive technicians to ensure proper dilution

V·RESOURCING

• Easily checks condition of antifreeze and coolant
• Works for all ethylene glycol coolants, including GM Dex-Cool
• Tough, shatter-resistant clear housing
• Simple to use

ATD Tools

• Function 1: Measuring freezing point of automobile antifreeze based on ethylene glycol or propylene glycol. Scale Range: ethylene glycol based: 32 to -84 degree F, propylene glycol based:32 to -60 degree F.
• Function 2: Measuring specific gravity of battery acid and provide a quick reference of battery charge condition. Scale Range:1.100~1.400kg/l for Battery fluid.
• Features automatic temperature compensation: makes it even easier to get fast results.
• Instant Reading Result: Just need 2-3 drops of solution and a few seconds, you can get accurate readings.
• Durable and Easy to Use & Carry -- The main part is made of chromium, it's light but durable.

Agriculture Solutions