---
product_id: 544052367
title: "NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid"
brand: "aicevoos"
price: "€ 30.08"
currency: EUR
in_stock: true
reviews_count: 13
category: "Aicevoos"
url: https://www.desertcart.hr/products/544052367-nf-brake-fluid-tester-pen-brake-fluid-test-strips-calibrated
store_origin: HR
region: Croatia
---

# 3-color backlight for clear, day/night readability Audible buzzer alerts for instant feedback Fast detection under 10 seconds NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid

**Brand:** aicevoos
**Price:** € 30.08
**Availability:** ✅ In Stock

## Summary

> 🚗 Don’t get caught off guard—test your brake fluid like a pro!

## Quick Answers

- **What is this?** NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid by aicevoos
- **How much does it cost?** € 30.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/544052367-nf-brake-fluid-tester-pen-brake-fluid-test-strips-calibrated)

## Best For

- aicevoos enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Travel-Ready:** Slim, ergonomic design fits in your hand and glovebox—take it anywhere with confidence.
- • **Instant, Clear Results:** High-sensitivity probe with audible alarms and tri-color backlight ensures no guesswork.
- • **Prevent Costly Repairs:** Detect water contamination early to avoid unnecessary brake fluid flushes and maintain peak braking performance.
- • **Universal Compatibility:** Calibrated for DOT3, DOT4, DOT5.1 & synthetic brake fluids—one tester for all your vehicles.
- • **User-Friendly Operation:** Simple control panel with intuitive color-coded alerts—professional-grade testing made effortless.

## Overview

The Aicevoos NF Brake Fluid Tester Pen is a precision tool designed for quick, accurate testing of DOT3, DOT4, DOT5.1, and synthetic brake fluids. Featuring a high-sensitivity probe, audible buzzer, and tri-color backlight, it delivers instant, easy-to-read results to help you maintain optimal brake performance and avoid costly repairs. Compact and travel-friendly, it’s perfect for personal use, workshops, and dealerships alike.

## Description

Buy Aicevoos NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid: Brake Fluids - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Works exactly as advertised advertised - Brilliant tool - avoid unrequired coolant changes. - Works EXACTLY as advertised - fantastic tool
Review: Easy to use tool to test brake fluid for replacement - I bought this tool to test the brake fluid in our fleet of extended family cars and pickups. This tool tests the amount of water absorbed over the lifetime of the brake fluid and gives you a rating on whether you should replace, watch, or if you are all good. An inexpensive tool to verify if you use a shop for your auto service, and they tell you that you need a brake flush. One of the upsell gimmicks many autoshops push is a brake flush. With this tool, you can quickly determine if their recommendation is valid. A brake fluid flush is important if your fluid can no longer hold up to the demands of braking, but many factors cause its breakdown. Look at your owner's manual for guidance on service intervals for a brake flush as well. This tool is easy to use, it appears accurate when tested against other tools, and is reasonably made of quality material. Is to use as far as functionality, turn it on, and select the fluid type which is stamped on the master cylinder cap or your owner's manual fluids section. (Dot 4 or 5) Remove the cap on the master cylinder and insert the tool into the fluid reservoir, and it will show you a result and beep if needing replacement.

## Features

- WIDE RANGE OF APPLICATIONS: The automotive brake fluid tester is a universal device for most vehicles. It can check the condition of DOT-3, DOT-4, DOT-5.1 brake fluids as well as most synthetic brake fluids. It is extremely easy for personal use and is widely used for private workshops, repair shops and car dealerships.
- EASY TO USE: The test procedure is fast and efficient and has a simple control panel. The backlight lights green at 0%-2% data (brake fluid is ready to use). At 2%-3%, the backlight turns yellow and the buzzer sounds slowly (brake fluid needs to be changed). The backlight is red and the buzzer sounds quickly when the data is greater than 3% (brake fluid needs to be changed immediately).
- EASY READING: high-sensitivity probe + audible alarm, instant display of results, large screen with three-color backlight, easy to read the measurement results whether day or night.
- FAST DETECTION: the detection process is fast and efficient, the control panel is simple and easy to use. Can quickly determine whether the brake fluid needs to be replaced after the background light reminder.
- EASY TO CARRY: the case is well structured, compact and fits well in your hand. You can take it with you when traveling without taking up too much space.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C1SFRRGB |
| Date First Available | April 7, 2023 |
| Item Weight | 2.46 ounces |
| Manufacturer | Aicevoos |
| Package Dimensions | 7.28 x 1.77 x 1.14 inches |

## Images

![NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid - Image 1](https://m.media-amazon.com/images/I/51S7MR1oKPL.jpg)
![NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid - Image 2](https://m.media-amazon.com/images/I/71CnPGlCnoL.jpg)
![NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid - Image 3](https://m.media-amazon.com/images/I/71ONsdq484L.jpg)
![NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid - Image 4](https://m.media-amazon.com/images/I/71xS4bycMrL.jpg)
![NF Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid - Image 5](https://m.media-amazon.com/images/I/61wQ99hLCeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works exactly as advertised advertised - Brilliant tool - avoid unrequired coolant changes.
*by J***2 on February 8, 2026*

Works EXACTLY as advertised - fantastic tool

### ⭐⭐⭐⭐⭐ Easy to use tool to test brake fluid for replacement
*by O***R on September 15, 2025*

I bought this tool to test the brake fluid in our fleet of extended family cars and pickups. This tool tests the amount of water absorbed over the lifetime of the brake fluid and gives you a rating on whether you should replace, watch, or if you are all good. An inexpensive tool to verify if you use a shop for your auto service, and they tell you that you need a brake flush. One of the upsell gimmicks many autoshops push is a brake flush. With this tool, you can quickly determine if their recommendation is valid. A brake fluid flush is important if your fluid can no longer hold up to the demands of braking, but many factors cause its breakdown. Look at your owner's manual for guidance on service intervals for a brake flush as well. This tool is easy to use, it appears accurate when tested against other tools, and is reasonably made of quality material. Is to use as far as functionality, turn it on, and select the fluid type which is stamped on the master cylinder cap or your owner's manual fluids section. (Dot 4 or 5) Remove the cap on the master cylinder and insert the tool into the fluid reservoir, and it will show you a result and beep if needing replacement.

### ⭐⭐⭐⭐⭐ Worth the money!
*by G***E on October 30, 2025*

Product is so very easy to use. Take it out of the box. Put the batteries in, turn it on. Pull the cap off the sensor and test your brake fluid.

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**Shop now:** [https://www.desertcart.hr/products/544052367-nf-brake-fluid-tester-pen-brake-fluid-test-strips-calibrated](https://www.desertcart.hr/products/544052367-nf-brake-fluid-tester-pen-brake-fluid-test-strips-calibrated)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-22*