---
product_id: 607378487
title: "4140A Flux Remover for PC Boards (Improved Formulation) 945 mL Liquid"
brand: "mg chemicals"
price: "$U7055"
currency: UYU
in_stock: true
reviews_count: 5
category: "Mg Chemicals"
url: https://www.desertcart.uy/products/607378487-4140a-flux-remover-for-pc-boards-improved-formulation-945-ml
store_origin: UY
region: Uruguay
---

# aggressive flux removal power 945 mL liquid volume RoHS compliant & plastic safe 4140A Flux Remover for PC Boards (Improved Formulation) 945 mL Liquid

**Brand:** mg chemicals
**Price:** $U7055
**Availability:** ✅ In Stock

## Summary

> 🧼 Clean boards, clear mind — never settle for sticky residues again!

## Quick Answers

- **What is this?** 4140A Flux Remover for PC Boards (Improved Formulation) 945 mL Liquid by mg chemicals
- **How much does it cost?** $U7055 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/607378487-4140a-flux-remover-for-pc-boards-improved-formulation-945-ml)

## Best For

- mg chemicals enthusiasts

## Why This Product

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

## Key Features

- • **Plastic-Safe Formula:** Protects delicate plastics on your boards while delivering industrial-strength cleaning.
- • **Generous 945 mL Supply:** Large volume ensures you stay stocked through multiple projects without interruption.
- • **Optimized for Precision Use:** Ideal for spot cleaning and prototyping with easy brush application—no mess, no fuss.
- • **Powerful Multi-Residue Cleaner:** Effortlessly removes rosin, non-rosin, no-clean, ionic & non-ionic flux residues for pristine PCBs.
- • **RoHS Compliant & Food Facility Approved:** Meets strict environmental and safety standards, trusted even in sensitive environments.

## Overview

The MG Chemicals 4140A Flux Remover is a 945 mL liquid solution designed for professional-grade cleaning of PCBs. Its improved formulation aggressively removes all types of flux residues—including rosin, non-rosin, and no-clean fluxes—while being safe on most plastics. RoHS compliant and approved for use in food facilities, it’s the go-to choice for engineers and technicians seeking spotless, residue-free circuit boards with minimal hassle.

## Description

4140A FLUX REMOVER FOR PC BOARDS (Improved Formulation) cleans post solder residues quickly and conveniently. Its plastic safe formula removes rosin, non-rosin, and no clean fluxes, as well as both ionic and non-ionic residues. This product is used for spot cleaning flux while repairing or prototyping electronic circuits. Aggressive cleaning strength. ROHS Compliant. Read the product’s SDS before using it.

Review: This works flawlessly. Easy to apply, and eats through even the toughest of flux residue. I recently tried out some new solder on a test board, and this solder had some god awful quality “rosin” core. My usual 99% IPA wasn’t anywhere near strong enough to shift it. If anything, all it did was smear it in, and make an even bigger mess of the board, leaving a very sticky, grimey residue. This stuff however, cleans off the flux like it wasn’t even there in the first place. I will note, there is probably a technique to how you use this. I personally used an ESD brush, and painted it on to the PCB over the kitchen sink. I then thought it would be wise to rinse it off with some IPA. (Remember what I said about the IPA earlier?) well, the flux re-accumulated on the board, and in the kitchen sink. Leaving that horrible residue everywhere! So for my next round, I reapplied the flux remover (with the same brush) and dabbed it dry with a paper towel. This time, no mess, and I was pleasantly surprised to see a nice clean PCB afterwards. This stuff does have a little bit of a scent to it, but it’s nowhere near as pungent as my 99% IPA is. Given that most of my soldering supplies are from desertcart (flux and solder) you can’t always garuntee that they will clean off the way they say they will. In fact, most of the stuff I purchased said IPA would do the job; it didn’t. But I am certain this stuff will take care of it all! Well worth the money. And should I run out, I’d get more in a heartbeat!
Review: Bought the quart bottle (non-aerosol). I use this product in the final cleaning step after using 91% rubbing alcohol because it is expensive but works really well. As others have mentioned, brushing goes a long way towards breaking up flux and releasing it from the PCB. Best advice is to wipe away excess flux then soak the board in a shallow pan or dish for a few minutes then work at it with a brush. The goal is to save solvent and clean the board! Do this a few times before rinsing with solvent or alcohol. After the PCB dries, inspect and work on problem areas again.

## Features

- Use when a general-purpose zero residue flux remover is required
- Removes rosin, non-rosin, and no clean fluxes as well as ionic and non-ionic residues.
- Safe on most plastics
- RoHs compliant
- Suitable for use in food facilities as a Non-Food Chemical – Canadian and NFS recognition letters available on request

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07XDCRLR6 |
| ASIN  | B07XDCRLR6 |
| Best Sellers Rank | #116,495 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #5 in Solder Flux Removers & Cleaners |
| Brand | MG Chemicals |
| Customer Reviews | 4.6 4.6 out of 5 stars (208) |
| Customer reviews | 4.6 4.6 out of 5 stars (208) |
| Date First Available | 7 August 2020 |
| Format | Liquid |
| Item model number  | 4140A-945ML |
| Manufacturer  | MG Chemicals |
| Product Dimensions  | 7.68 x 24.32 x 7.68 cm; 700 g |
| Volume | 1 Liters |

## Product Details

- **Brand:** MG Chemicals
- **Item form:** Liquid
- **Material features:** Suitable for use in food facilities as a Non-Food Chemical
- **Scent:** Mild
- **Specific uses for product:** Industrial Machinery

## Images

![4140A Flux Remover for PC Boards (Improved Formulation) 945 mL Liquid - Image 1](https://m.media-amazon.com/images/I/61-ct5xvKRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 6 November 2025*

This works flawlessly. Easy to apply, and eats through even the toughest of flux residue. I recently tried out some new solder on a test board, and this solder had some god awful quality “rosin” core. My usual 99% IPA wasn’t anywhere near strong enough to shift it. If anything, all it did was smear it in, and make an even bigger mess of the board, leaving a very sticky, grimey residue. This stuff however, cleans off the flux like it wasn’t even there in the first place. I will note, there is probably a technique to how you use this. I personally used an ESD brush, and painted it on to the PCB over the kitchen sink. I then thought it would be wise to rinse it off with some IPA. (Remember what I said about the IPA earlier?) well, the flux re-accumulated on the board, and in the kitchen sink. Leaving that horrible residue everywhere! So for my next round, I reapplied the flux remover (with the same brush) and dabbed it dry with a paper towel. This time, no mess, and I was pleasantly surprised to see a nice clean PCB afterwards. This stuff does have a little bit of a scent to it, but it’s nowhere near as pungent as my 99% IPA is. Given that most of my soldering supplies are from Amazon (flux and solder) you can’t always garuntee that they will clean off the way they say they will. In fact, most of the stuff I purchased said IPA would do the job; it didn’t. But I am certain this stuff will take care of it all! Well worth the money. And should I run out, I’d get more in a heartbeat!

### ⭐⭐⭐⭐⭐ Review
*by J***P on 22 December 2025*

Bought the quart bottle (non-aerosol). I use this product in the final cleaning step after using 91% rubbing alcohol because it is expensive but works really well. As others have mentioned, brushing goes a long way towards breaking up flux and releasing it from the PCB. Best advice is to wipe away excess flux then soak the board in a shallow pan or dish for a few minutes then work at it with a brush. The goal is to save solvent and clean the board! Do this a few times before rinsing with solvent or alcohol. After the PCB dries, inspect and work on problem areas again.

### ⭐⭐⭐⭐⭐ Review
*by M***S on 4 January 2026*

Great - does what it says on the bottle

## Frequently Bought Together

- MG Chemicals 4140A Flux Remover for PC Boards, 1 Quart Bottle
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- Thermaltronics TMT-TC-2 Tip Tinner (20g) in 0.8oz Container

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*Product available on Desertcart Uruguay*
*Store origin: UY*
*Last updated: 2026-02-17*