---
product_id: 8731454
title: "409B-140G 409B Electrosolve Zero Residue Contact Cleaner, 140g (5 oz) Aerosol Can"
brand: "mg chemicals"
price: "€ 27.02"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mg Chemicals"
url: https://www.desertcart.ie/products/8731454-409b-140g-409b-electrosolve-zero-residue-contact-cleaner-140g-5
store_origin: IE
region: Ireland
---

# Non-conductive for safe electronics cleaning Ultra-fast evaporation, zero residue Dissolves oils & oxidation on contact points 409B-140G 409B Electrosolve Zero Residue Contact Cleaner, 140g (5 oz) Aerosol Can

**Brand:** mg chemicals
**Price:** € 27.02
**Availability:** ✅ In Stock

## Summary

> ⚡ Clean smarter, not harder — the zero-residue contact cleaner pros trust!

## Quick Answers

- **What is this?** 409B-140G 409B Electrosolve Zero Residue Contact Cleaner, 140g (5 oz) Aerosol Can by mg chemicals
- **How much does it cost?** € 27.02 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/8731454-409b-140g-409b-electrosolve-zero-residue-contact-cleaner-140g-5)

## 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

- • **Lightning-Fast Drying:** Dries instantly to minimize downtime and keep your devices running smoothly.
- • **Zero Residue, Zero Worries:** Leaves no film or moisture—perfect for sensitive electronics and circuit boards.
- • **Safe on Plastics & Electronics:** Formulated to protect delicate plastics and components without damage.
- • **Certified for Food Facility Use:** Meets Canadian and NFS standards, ensuring safe use in sensitive environments.
- • **Industrial-Grade Cleaning Power:** Effortlessly dissolves oils, dust, and oxidation for pristine contacts and connectors.

## Overview

MG Chemicals 409B Electrosolve is a 140g aerosol contact cleaner designed for fast-drying, zero-residue cleaning of electronics. Non-conductive and safe on plastics, it dissolves oils and oxidation on connectors, circuit boards, and microprocessors. Certified for use in food facilities, it’s the go-to solution for professionals seeking reliable, residue-free maintenance.

## Description

The 409B Electro solve Contact Cleaner is a very fast drying and zero residue contact cleaner. It is effective at dissolving oils and non-polar residues, and for assisting with the removal of oxidation using a brush. It cleans connectors, contacts, circuit breakers, microprocessors, and LED and PCB components.

Review: MG Chemicals Electrosolve Contact Cleaner – A Must-Have for Cleaning Old Mining Rigs - I picked up the MG Chemicals 409B Electrosolve Zero Residue Contact Cleaner (15.45 fl oz) to clean some old, dusty mining rigs, and it worked wonders. After months of running 24/7, my miners had collected a ton of dust and grime, and this cleaner made them look and perform almost like new. What I really like is that it dries quickly without leaving any residue, so I don’t have to worry about moisture or film causing shorts. It’s safe on plastics and electronics, which is perfect for circuit boards, fans, and power supply connectors. The spray nozzle makes it easy to get into tight spots, blowing away dust and cleaning contacts thoroughly. ✅ Pros: Zero residue formula — safe for electronics Cleans dust, dirt, and oxidation from boards and connectors Quick-drying, no waiting around Large 15.45 fl oz can lasts a long time Works great on mining rigs and other electronics ❌ Cons: Strong odor while spraying (use in a ventilated area) 💡 Tips: Always power down and unplug your miners before cleaning. Use short bursts instead of long sprays to avoid over-saturation. Do this cleaning outside or in a well-ventilated area. Pair with a can of compressed air for best results — blow out dust first, then use the cleaner on contacts. Bottom Line: The MG Chemicals 409B Electrosolve is a powerful and reliable cleaner for electronics. It brought my old miners back to life by safely removing dust and oxidation, and I’ll definitely keep a can on hand for future maintenance.
Review: Works. Took several squirts. - I don't know how it works but it does. I opened the hood of my old receiver and accessed the innards side of the volume knob. After Several squirts and a lot of rapid turning of the knob, the crackling sound disappeared.

## Features

- Non-conductive
- Zero residue, Fast evaporation rate
- Safe on most plastics
- Dissolves oils and residues
- Suitable for Use in Food Facilities as a Non-Food Chemical—Canadian and NFS recognition letters available on request

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005DNR0N4 |
| Date First Available | December 13, 2011 |
| Item Weight | 4.9 ounces |
| Item model number | 409B-140G |
| Manufacturer | MG Chemicals |
| Product Dimensions | 5.3 x 2.1 x 2.1 inches |

## Product Details

- **Brand:** MG Chemicals
- **Item Form:** Spray
- **Scent:** Unscented
- **Specific Uses For Product:** connectors, contacts, circuit breakers, microprocessors, and LED and PCB components.

## Images

![409B-140G 409B Electrosolve Zero Residue Contact Cleaner, 140g (5 oz) Aerosol Can - Image 1](https://m.media-amazon.com/images/I/71+hRM-qbFL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ MG Chemicals Electrosolve Contact Cleaner – A Must-Have for Cleaning Old Mining Rigs
*by K***L on August 25, 2025*

I picked up the MG Chemicals 409B Electrosolve Zero Residue Contact Cleaner (15.45 fl oz) to clean some old, dusty mining rigs, and it worked wonders. After months of running 24/7, my miners had collected a ton of dust and grime, and this cleaner made them look and perform almost like new. What I really like is that it dries quickly without leaving any residue, so I don’t have to worry about moisture or film causing shorts. It’s safe on plastics and electronics, which is perfect for circuit boards, fans, and power supply connectors. The spray nozzle makes it easy to get into tight spots, blowing away dust and cleaning contacts thoroughly. ✅ Pros: Zero residue formula — safe for electronics Cleans dust, dirt, and oxidation from boards and connectors Quick-drying, no waiting around Large 15.45 fl oz can lasts a long time Works great on mining rigs and other electronics ❌ Cons: Strong odor while spraying (use in a ventilated area) 💡 Tips: Always power down and unplug your miners before cleaning. Use short bursts instead of long sprays to avoid over-saturation. Do this cleaning outside or in a well-ventilated area. Pair with a can of compressed air for best results — blow out dust first, then use the cleaner on contacts. Bottom Line: The MG Chemicals 409B Electrosolve is a powerful and reliable cleaner for electronics. It brought my old miners back to life by safely removing dust and oxidation, and I’ll definitely keep a can on hand for future maintenance.

### ⭐⭐⭐⭐⭐ Works. Took several squirts.
*by C***K on December 4, 2025*

I don't know how it works but it does. I opened the hood of my old receiver and accessed the innards side of the volume knob. After Several squirts and a lot of rapid turning of the knob, the crackling sound disappeared.

### ⭐⭐⭐⭐⭐ Has saved the day for me at least twice, probably more..
*by S***S on May 21, 2023*

Sometimes when you use a product like this, it can be hard to know for sure if it cured your issue. I had a guitar amp with multiple scratchy pots (potentiometers) I took brain' out and was ready to take some pots out, yet accidentally observed or noticed that there was a hole in the side of each one lol.... So then I put the little straw on the end of the spray head, and used short spurts in each of the holes, turned each knob rapidly back and forth, FIXED!! 100% , I also used this on a Fluke Meter (pro model) , the display and a couple of push tabs had stopped responding, after a little spray where applicable, FIXED !! lol Quite happy, it works, wear surg gloves for sure, and avoid inhaling while using, use outside or get away quickly after spraying.. I'm sure the ingredients are 'potent' , yes lets leave it at that. Have a great day, I'll buy this again, as/if needed. ---------- By the way, I've had this for a pretty long time now and unlike WD40 where the propellent is spent, long before you get down to the 1/4 can level, this propellant and seal system seems to be excellent.

## Frequently Bought Together

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-28*