---
product_id: 69943006
title: "4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid"
brand: "aichose"
price: "$72"
currency: NZD
in_stock: true
reviews_count: 8
category: "Aichose"
url: https://www.desertcart.nz/products/69943006-4-in-1-def-antifreeze-coolant-refractometer-for-automobile-antifreeze
store_origin: NZ
region: New Zealand
---

# Battery acid gravity 1.10-1.40 kg/l DEF urea concentration 30-35% Freeze point range -50 to 0°C 4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid

**Brand:** aichose
**Price:** $72
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay Cool, Stay Ahead: The Ultimate 4-in-1 Fluid Tester for the Pro Driver

## Quick Answers

- **What is this?** 4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid by aichose
- **How much does it cost?** $72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/69943006-4-in-1-def-antifreeze-coolant-refractometer-for-automobile-antifreeze)

## Best For

- aichose enthusiasts

## Why This Product

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

## Key Features

- • **Diesel Truck Essential:** Ensure your diesel exhaust fluid is perfectly balanced for emissions compliance and engine efficiency.
- • **Instant, Clear Readings:** Automatic temperature compensation delivers fast, reliable results with easy-to-read scales.
- • **Optimize Battery Health:** Quickly assess battery charge condition by measuring specific gravity, preventing unexpected failures.
- • **Multi-Fluid Compatibility:** One device tests antifreeze, DEF, battery acid, and windshield fluid—streamline your maintenance toolkit.
- • **Precision Freeze Point Detection:** Accurately measures antifreeze freeze points down to -50°C for ultimate engine protection.

## Overview

This 4-in-1 DEF Antifreeze Coolant Refractometer offers precise measurement of antifreeze freeze points (-50 to 0°C), battery acid specific gravity (1.10-1.40 kg/l), windshield washer fluid freeze points (-40 to 0°C), and diesel exhaust fluid urea concentration (30-35%). Featuring automatic temperature compensation, it provides fast, accurate readings across multiple vehicle fluids, making it an indispensable tool for professional-grade vehicle maintenance.

## Description

Buy 4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid: Antifreezes & Coolants - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Takes the Guesswork Out of Coolant Checks! - I bought this 4-in-1 DEF Antifreeze Coolant Refractometer to check my antifreeze mix, and it works perfectly. Super easy to use right out of the box—just a drop of fluid and you get an instant, accurate reading. The numbers are clear and easy to read, and it even covers DEF and battery acid checks. Feels solid and well-built. This tool takes all the guessing out of coolant testing—highly recommend for any car owner or DIY mechanic.
Review: Great to have - Very hand to have if you have a diesel truck that uses def works great to measure to make sure it is inspect

## Features

- Function 1: Measuring freezing point of automobile antifreeze based on ethylene glycol or propylene glycol.Measuring Range: -50 to 0 ℃.
- Function 2: Measuring specific gravity of battery acid and provide a quick reference of battery charge condition.Measuring Range:1.10 to 1.40 kg/l
- Function 3: Measuring windshield washer fluid based on ethanol or isopropyl alcohol.Measuring Range:-40 to 0 ℃
- Function 4:Measuring Urea Concentration in automobile diesel exhaust fluid (DEF).Measuring Range:30% to 35%
- Features automatic temperature compensation: makes it even easier to get fast results.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 1,275 Reviews |

## Images

![4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid - Image 1](https://m.media-amazon.com/images/I/61UUU90yfmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Takes the Guesswork Out of Coolant Checks!
*by M***E on October 13, 2025*

I bought this 4-in-1 DEF Antifreeze Coolant Refractometer to check my antifreeze mix, and it works perfectly. Super easy to use right out of the box—just a drop of fluid and you get an instant, accurate reading. The numbers are clear and easy to read, and it even covers DEF and battery acid checks. Feels solid and well-built. This tool takes all the guessing out of coolant testing—highly recommend for any car owner or DIY mechanic.

### ⭐⭐⭐⭐⭐ Great to have
*by P***L on December 4, 2025*

Very hand to have if you have a diesel truck that uses def works great to measure to make sure it is inspect

### ⭐⭐⭐⭐⭐ Works perfectly out of the box.
*by T***B on October 5, 2024*

Great product. Easy to use. And well worth the money to keep on board my RV. Used distilled water to test the unit when it arrived. It was perfectly calibrated. Next, I extracted a few ounces of DEF from the tank on my RV. That, also, showed a perfect ammonia level.

## Frequently Bought Together

- 4-in-1 DEF Antifreeze Coolant Refractometer for Automobile Antifreeze System, Diesel Exhaust Fluid, Battery Acid and Windshield Washer Fluid
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**Shop now:** [https://www.desertcart.nz/products/69943006-4-in-1-def-antifreeze-coolant-refractometer-for-automobile-antifreeze](https://www.desertcart.nz/products/69943006-4-in-1-def-antifreeze-coolant-refractometer-for-automobile-antifreeze)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-22*