---
product_id: 37559542
title: "186 Liquid Soldering Flux, RMA Rosin, 2-ounce Bottle"
brand: "kester"
price: "€ 22.07"
currency: EUR
in_stock: true
reviews_count: 8
category: "Kester"
url: https://www.desertcart.ie/products/37559542-186-liquid-soldering-flux-rma-rosin-2-ounce-bottle
store_origin: IE
region: Ireland
---

# 186 Liquid Soldering Flux, RMA Rosin, 2-ounce Bottle

**Brand:** kester
**Price:** € 22.07
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** 186 Liquid Soldering Flux, RMA Rosin, 2-ounce Bottle by kester
- **How much does it cost?** € 22.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/37559542-186-liquid-soldering-flux-rma-rosin-2-ounce-bottle)

## Best For

- kester enthusiasts

## Why This Product

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

## Description

Kester 186 is a rosin-based organic flux that is specifically designed for rework of conventional and surface mount circuit board assemblies. The low solids content and activator system results in LOW RESIDUE left on the assembly after soldering. There are no residues to interfere with electrical testing. Kester 186 flux exhibits improved soldering performance to minimize solder bridges (shorts) during rework operations.

Review: If you use solid solder or re-work antique electronics, this is the great stuff! - In active retirement I repair and restore great old ham radio equipment and antique old radios. The old solder is often so oxidized it won't flow and stick well when parts are replaced. In addition to using new rosin solder, a bit of this flux on the joint to be re-worked makes all the old solder receptive to accepting the new solder, to adhering to braided solder (wick) remover, and to make a good, strong, well-flowed joint. It works great for me! It's supposed to be non-corrosive, but just in case, removing any excess is a great idea!
Review: Rosin or Flux - This is a handy 2 ounce size with a dispenser. I could write pages of material in this review but I will spare you the long story. The product is works as needed and cleans up pretty easily off the joints. If you are looking for a flux to impress your neighbors and friends, this is your product!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01MR49JY1 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #41,030 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #109 in Solder #180 in Soldering Parts & Accessories #720 in Welding Equipment & Accessories |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,015) |
| Date First Available | January 9, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 2.56 ounces |
| Manufacturer | Kester |
| Material | copper |
| Package Dimensions | 6 x 4 x 4 inches |
| Part Number | 186-2 |

## Images

![186 Liquid Soldering Flux, RMA Rosin, 2-ounce Bottle - Image 1](https://m.media-amazon.com/images/I/61nmi5QuCJL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ If you use solid solder or re-work antique electronics, this is the great stuff!
*by F***R on May 25, 2024*

In active retirement I repair and restore great old ham radio equipment and antique old radios. The old solder is often so oxidized it won't flow and stick well when parts are replaced. In addition to using new rosin solder, a bit of this flux on the joint to be re-worked makes all the old solder receptive to accepting the new solder, to adhering to braided solder (wick) remover, and to make a good, strong, well-flowed joint. It works great for me! It's supposed to be non-corrosive, but just in case, removing any excess is a great idea!

### ⭐⭐⭐⭐⭐ Rosin or Flux
*by W***E on February 3, 2024*

This is a handy 2 ounce size with a dispenser. I could write pages of material in this review but I will spare you the long story. The product is works as needed and cleans up pretty easily off the joints. If you are looking for a flux to impress your neighbors and friends, this is your product!

### ⭐⭐⭐⭐⭐ Incredible flux
*by N***E on November 19, 2024*

This is the best flux I've ever gotten my hands on. Burns quick, less residue to clean off than other brands- when in doubt go Kester!

## Frequently Bought Together

- Kester 186 Liquid Soldering Flux, RMA Rosin, 2-ounce Bottle
- Kester 44 Solder Wire, 63/37 0.031”, RMA Rosin, 1-ounce Tube
- Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire Roll and Disassemble Electrical Components

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-26*