---
product_id: 26901946
title: "THE100 Anti-Freeze Tester"
brand: "thexton"
price: "€ 28.39"
currency: EUR
in_stock: true
reviews_count: 8
category: "Thexton"
url: https://www.desertcart.de/products/26901946-the100-anti-freeze-tester
store_origin: DE
region: Germany
---

# Compact pocket-sized design Specifically calibrated for Propylene Glycol Accurate freeze protection reading THE100 Anti-Freeze Tester

**Brand:** thexton
**Price:** € 28.39
**Availability:** ✅ In Stock

## Summary

> ❄️ Stay cool, stay ahead: The ultimate antifreeze tester for the discerning driver.

## Quick Answers

- **What is this?** THE100 Anti-Freeze Tester by thexton
- **How much does it cost?** € 28.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/26901946-the100-anti-freeze-tester)

## Best For

- thexton enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by DIY Pros:** Join the savvy vehicle owners who demand precise maintenance tools tailored to their coolant type.
- • **Pocket-Sized Portability:** Slip it in your glove box or toolkit—always ready when you need a quick coolant check on the go.
- • **Precision Freeze Testing:** Get exact freeze point readings for your coolant, ensuring your engine stays protected no matter the weather.
- • **Propylene Glycol Compatibility:** Engineered specifically for Sierra Prestone Low Tox and other Propylene Glycol coolants, unlike generic testers.
- • **Temperature Accuracy Across Conditions:** Reliable performance at any temperature, so you never second-guess your antifreeze’s effectiveness.

## Overview

Thexton THE100 Anti-Freeze Tester is a compact, battery-powered ball-type tester designed specifically for Propylene Glycol coolants like Sierra Prestone Low Tox. It delivers accurate freeze point measurements across all temperatures, helping vehicle owners ensure optimal engine protection. With its pocket-sized design and 1-year warranty, it’s a reliable tool for proactive coolant maintenance.

## Description

Thexton THE100 Anti-Freeze Tester

Review: Did not work at all for me. Shows no freeze protection straight from new bottle. - Did not work at all for me. Shows no freeze protection straight from new bottle.
Review: Good for Propylene Glycol coolant - If you are using Propylene Glycol coolant such as Sierra, you'll discover that coolant testers for it aren't readily available. An auto parts store clerk tried to tell me that the normal testers would work for Sierra, but that isn't true. So off to desertcart to get the right thing. After I got this tester I tested with both kinds of tester and the reported difference was over 20 degrees. It's nice to be sure of the coolant protection level.

## Features

- Tests Sierra Prestone Low Tox and coolants
- Pocket size
- Propylene glycol
- Accurate at any temperature

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000P72I5S |
| Best Sellers Rank | #2,095,801 in Automotive ( See Top 100 in Automotive ) #851 in Battery Testers |
| Brand | Thexton |
| Brand Name | Thexton |
| Color | Neutral |
| Compatible Devices | Vehicles with a cooling system |
| Customer Reviews | 2.7 out of 5 stars 15 Reviews |
| Global Trade Identification Number | 00008721001009 |
| Included Components | 1 tester |
| Item Dimensions | 0.5 x 7 x 0.5 inches |
| Item Type Name | Thexton |
| Item Weight | 0.01 Ounces |
| Item dimensions L x W x H | 0.5 x 7 x 0.5 inches |
| Manufacturer | Thexton |
| Measurement Type | Temperature |
| Model | THE100 |
| Part Number | THE100 |
| Power Source | Battery Powered |
| Style | ball type tester |
| Style Name | ball type tester |
| UPC | 008721001009 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 Year Warranty |

## Images

![THE100 Anti-Freeze Tester - Image 1](https://m.media-amazon.com/images/I/81it7D6cjML.jpg)

## Customer Reviews

### ⭐ Did not work at all for me. Shows no freeze protection straight from new bottle.
*by W***. on December 16, 2025*

Did not work at all for me. Shows no freeze protection straight from new bottle.

### ⭐⭐⭐⭐⭐ Good for Propylene Glycol coolant
*by T***M on October 27, 2010*

If you are using Propylene Glycol coolant such as Sierra, you'll discover that coolant testers for it aren't readily available. An auto parts store clerk tried to tell me that the normal testers would work for Sierra, but that isn't true. So off to Amazon to get the right thing. After I got this tester I tested with both kinds of tester and the reported difference was over 20 degrees. It's nice to be sure of the coolant protection level.

### ⭐⭐⭐⭐ Works just great!
*by E***S on March 28, 2011*

I bought this tester because I use propylene glycol coolant in my vehicles, and a 'standard' antifreeze tester won't test it properly. I have little kids who like to help me work on my vehicles, and I'd just rather have the lower-toxicity coolant around. This tester is cheap, simple, compact, and works well. Testing a fresh 50/50 mix it indicates essentially the same freeze protection level as what the antifreeze label suggests. I gave it 4 stars instead of 5 simply because I could stand to have a longer tube to reach far enough down into my coolant expansion tank on my Subaru without having to try to cram part of my hand into it.

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---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-07-06*