---
product_id: 181297672
title: "RT175B Big Blu Brush On MicroLeak Detector Blue"
brand: "refrigeration technologies"
price: "169 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Refrigeration Technologies"
url: https://www.desertcart.ro/products/181297672-rt175b-big-blu-brush-on-microleak-detector-blue
store_origin: RO
region: Romania
---

# Detects micro leaks down to 0.74 oz/year Brush-on applicator with 10-inch extension dauber NSF certified & non-corrosive, safe for all gases RT175B Big Blu Brush On MicroLeak Detector Blue

**Brand:** refrigeration technologies
**Price:** 169 Lei
**Availability:** ✅ In Stock

## Summary

> 🔍 Spot leaks before they spot you — Big Blu means no leak left behind!

## Quick Answers

- **What is this?** RT175B Big Blu Brush On MicroLeak Detector Blue by refrigeration technologies
- **How much does it cost?** 169 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/181297672-rt175b-big-blu-brush-on-microleak-detector-blue)

## Best For

- refrigeration technologies enthusiasts

## Why This Product

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

## Key Features

- • **Brush-On Control:** Target leaks exactly where you need with the included extension dauber—no waste, no mess
- • **Precision Leak Detection:** Catch even the tiniest micro leaks invisible to standard sprays
- • **Food-Safe & Non-Corrosive:** NSF certified formula ensures safety around food and sensitive environments
- • **Persistent Film Technology:** Strong, long-lasting bubbles reveal leaks clearly even in challenging conditions
- • **Versatile Industry Standard:** Trusted by HVAC, aerospace, telecom, and gas pros worldwide for reliable leak spotting

## Overview

The RT175B Big Blu Brush On MicroLeak Detector is a professional-grade, NSF certified leak detection solution designed for pinpoint accuracy. Its brush-on applicator with a 10-inch dauber allows precise application, detecting micro leaks as small as 0.74 oz/year across all gas types. Non-corrosive and safe for use around food, it’s a trusted tool for HVAC, plumbing, aerospace, and telecom industries, delivering persistent, bubble-based leak identification with minimal waste.

## Description

This is our original Big Blu microleak detector downsized into a Brush On applicator. This product is great for spot leak applications and is supplied with a 10 inch extension dauber. Big Blu is a well-established bubble leak detector solution capable of detecting micro gas leakage down to 0.65 oz/yr. It is a strong persistent film forming liquid that has excelled in the field identification of gas leaks. Big Blu is used by OEM’s and industry professionals worldwide. Suitable for use with all gases to detect leaks on any pressurized system. Commonly used in HVAC, plumbing, telecom, aerospace, gas utilities, service industries and MVAC.

Review: Simple but effective product - This is not your typical soapy water. This is some thick stuff. Normally I use soapy water or some type of cleaner and wanted something more sensitive. While this takes a little time for stuff to show, this is quite good at showing the micro leaks. I’m very pleased at this for the price as this helps finding a tiny leak when a leak detector can’t find it when it’s a little breezy.
Review: Very little waste - It works great !!! Its easier to use than the spray. you can put it right on the joints without wasting

## Features

- NSF certified for use around food
- Non-Corrosive
- Detects Micro Leaks down to 0.74 oz/year
- Safe of any type of gas
- Brush on Bottle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B082MQZBV5 |
| Best Sellers Rank | #25,860 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #16 in Leak Detection Tools |
| Date First Available | December 11, 2014 |
| Item Weight | 0.01 ounces |
| Item model number | RT175B |
| Manufacturer | Refrigeration Technologies |
| Product Dimensions | 2.38 x 2.38 x 6.3 inches |

## Product Details

- **Brand:** Refrigeration Technologies
- **Style:** simple
- **Power Source:** Gas Powered
- **Color:** Blue
- **Item Weight:** 0.01 Ounces
- **Alarm:** Audible
- **Sensor Type:** Photoelectric
- **Number of Items:** 1
- **Manufacturer:** Refrigeration Technologies
- **UPC:** 017857175089

## Images

![RT175B Big Blu Brush On MicroLeak Detector Blue - Image 1](https://m.media-amazon.com/images/I/61MMXE0a5WL.jpg)

## Questions & Answers

**Q: Can you please clarify the product description? is this product "brush on blu micro leak detector - dauber  part #rt175b"**
A: Yes it is.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple but effective product
*by O***B on January 4, 2026*

This is not your typical soapy water. This is some thick stuff. Normally I use soapy water or some type of cleaner and wanted something more sensitive. While this takes a little time for stuff to show, this is quite good at showing the micro leaks. I’m very pleased at this for the price as this helps finding a tiny leak when a leak detector can’t find it when it’s a little breezy.

### ⭐⭐⭐⭐⭐ Very little waste
*by A***R on December 23, 2025*

It works great !!! Its easier to use than the spray. you can put it right on the joints without wasting

### ⭐⭐⭐⭐⭐ Easy to use and accurate
*by M***J on May 11, 2025*

Best leak detection that I have used. You will know one way or the other if you have a leak. Simple and trustworthy.

## Frequently Bought Together

- Refrigeration Technologies RT175B Big Blu Brush On MicroLeak Detector Blue
- Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
- Appion MGAVCT 1/4" MegaFlow Vacuum-Rated Valve Core Removal Tool

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**Shop now:** [https://www.desertcart.ro/products/181297672-rt175b-big-blu-brush-on-microleak-detector-blue](https://www.desertcart.ro/products/181297672-rt175b-big-blu-brush-on-microleak-detector-blue)

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-01*