---
product_id: 344045927
title: "4 in 1 Antifreeze Refractometer ℉ Coolant Tester"
brand: "hallocool"
price: "€ 40.47"
currency: EUR
in_stock: null
reviews_count: 8
category: "Hallocool"
url: https://www.desertcart.sk/products/344045927-4-in-1-antifreeze-refractometer-coolant-tester
store_origin: SK
region: Slovakia
---

# Automatic Temperature Compensation (ATC) 4-in-1 multi-fluid testing Fahrenheit display for instant readout 4 in 1 Antifreeze Refractometer ℉ Coolant Tester

**Brand:** hallocool
**Price:** € 40.47
**Availability:** ❌ Out of Stock

## Summary

> ❄️ Stay Cool, Stay Accurate — The Ultimate 4-in-1 Antifreeze Tester

## Quick Answers

- **What is this?** 4 in 1 Antifreeze Refractometer ℉ Coolant Tester by hallocool
- **How much does it cost?** € 40.47 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/344045927-4-in-1-antifreeze-refractometer-coolant-tester)

## Best For

- hallocool enthusiasts

## Why This Product

- Trusted hallocool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rugged & Ready:** Durable aluminum & ABS rubber build with portable case for on-the-go pros
- • **All-in-One Precision:** Test antifreeze, battery acid, windshield fluid & DEF with one sleek device
- • **Smart ATC Technology:** Auto temperature compensation ensures flawless accuracy every time
- • **Instant Fahrenheit Readings:** No conversions needed—get accurate °F results in seconds
- • **Minimal Sample, Maximum Efficiency:** Only 2-3 drops needed—faster, cleaner, and more cost-effective than traditional testers

## Overview

This 4-in-1 antifreeze refractometer delivers precise measurements for ethylene/propylene glycol antifreeze, battery acid specific gravity, windshield washer fluid freeze point, and diesel exhaust fluid urea concentration. Featuring a clear Fahrenheit display and automatic temperature compensation, it provides fast, reliable results with just a few drops of fluid. Built tough with aluminum and ABS rubber, it’s portable and designed for long-lasting professional use.

## Description

Antifreeze Refractometer in Fahrenheit 4 in 1 Antifreeze Tester Coolant Refractometer Ethylene Propylene Glycol Refractometer for Antifreeze System Diesel Exhaust Fluid, Battery Acid: desertcart.com: Industrial & Scientific

Review: Accuracy Matters - Glad I tried this Refractometer and discovered my decades old floating balls tester reads over 25 degrees off/low, so I was adding concentrated antifreeze, going above a 60/40 mix. New distilled water showed calibration was accurate out of the box. This tester is easy to use, and new 50/50 premixed ethylene type antifreeze stating -34F protection out of the jug also reads accurate on this.
Review: Refracto - Works well.

## Features

- 4-in-1 Tester - Measuring Freezing of automoblie antifreeze based on ethylene glycol or propylene glycol -60℉ to 32℉. Measuring Specific Gravity of battery acid 1.10 to 1.40Kg/L. Measuring of Windshield Washer Fluid based on ethanol or isopropyl alcohol -40℉ to 32℉. Measuring Urea Concentration in automobile diesel exhauset fluid (DEF) 30% to 35%
- Display In Fahrenheit - Updated antifreeze coolant refractometer in Fahrenheit (℉) display, allow you easy to read measured results by ℉ unit, no need to units conversion and save your time
- ATC Function - Coolant refractometer Fahrenheit can automatically compensate temperature when ambient temperature changes, eliminate the deviation, you can get the accurate results fast and easier
- Easy To Use - Only need 2 or 3 drops of solution and wait for few seconds, then you get the accurate results. These antifreeze tester needs less sample solution than tradistional hydrometer and less expensive then digital refractometer
- Durable And Portable - Antifreeze coolant tester is made of aluminum and ABS rubber, non-staining, anti-rust and stury for long perfermance. Comes with durable plastic box, portable and easy to take with you

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0943KP2BB |
| Best Sellers Rank | #38,024 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #17 in Lab Refractometers |
| Date First Available | May 4, 2021 |
| Item Weight | 8.4 ounces |
| Manufacturer | Hallocool |
| Package Dimensions | 8.15 x 3.27 x 2.13 inches |

## Images

![4 in 1 Antifreeze Refractometer ℉ Coolant Tester - Image 1](https://m.media-amazon.com/images/I/61xdkkJ+aEL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Accuracy Matters
*by J***S on December 31, 2025*

Glad I tried this Refractometer and discovered my decades old floating balls tester reads over 25 degrees off/low, so I was adding concentrated antifreeze, going above a 60/40 mix. New distilled water showed calibration was accurate out of the box. This tester is easy to use, and new 50/50 premixed ethylene type antifreeze stating -34F protection out of the jug also reads accurate on this.

### ⭐⭐⭐⭐⭐ Refracto
*by J***F on February 24, 2026*

Works well.

### ⭐⭐⭐⭐⭐ Great little gadget!
*by J***F on February 4, 2026*

This is my first refractometer, so was a little aprehensive about using one at first. There was no need. SUPER easy to use, and this particular one seems great. Comes in a little plastic case with foam lining to keep it safe and secure. Includes a tiny screwdriver for adjusting the calibration. It can be focused to perfect clarity, even if you wear glasses (I myself wear progressive bifocals). One note on that "clarity" piece. If you look through it without any liquid on the glass, you'll probably need to point it at a very bright light to see the measuring scales. Do not fret. As soon as you put a few drops of applicable liquid on the glass and close the little plastic cover over it, the view will be bright and clear in ambient lighting. After getting everything into focus, the first thing to do is calibrate the unit. Place a few drops of distilled water on the glass and close the plastic cover. The water should completely cover the glass, with no gaps. Wipe off any overflow from around the edges. Look through the lens to see the line where the white meets the blue. That should be at 32 F (the freezing point of water). If it is not (mine was about 1 degree off), then you need to calibrate it. Pull the rubber cap off of the adjustment port on the top side of the device. Grab the little screwdriver, slot it into the screw head, and while looking through the lens at the scale, slowly turn the screwdriver one way or the other, until the line is exactly on 32 degrees. It is now calibrated and ready to use. Great little tool that is super easy to use!

## Frequently Bought Together

- Antifreeze Refractometer in Fahrenheit 4 in 1 Antifreeze Tester Coolant Refractometer Ethylene Propylene Glycol Refractometer for Antifreeze System Diesel Exhaust Fluid, Battery Acid
- ITEQ Brake Fluid Liquid Tester Pen with 5 LED Indicators, Calibrated For DOT3 DOT4 Brake Fluid
- Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack

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**Shop now:** [https://www.desertcart.sk/products/344045927-4-in-1-antifreeze-refractometer-coolant-tester](https://www.desertcart.sk/products/344045927-4-in-1-antifreeze-refractometer-coolant-tester)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-20*