MG Chemicals
MG Chemicals 409B-340G Contact Cleaner
Best residue-free cleaner for maintaining sensitive electronic components.
The MG Chemicals 409B-340G is a high-performance contact cleaner and degreaser from the Electrosolve Series, packaged in a 12 oz (354mL) aerosol can. It is specifically formulated for cleaning electronics, ensuring safety on plastics while delivering rapid evaporation for quick operational turnaround. This cleaner leaves absolutely no residue behind, making it an essential tool for maintaining sensitive equipment. It adheres to RoHS compliance standards and comes with a 12-month warranty from the date of purchase by the end user.
$14.99
Owner Satisfaction
4.7
/ 5
Category Rank
18
/ 732
#18 in Electronics Cleaners
Price vs Category Average
-78%
Below average
Application
Cleaner and degreaser for electronics
/ Cleaner and degreaser for electronics
Who it's for
- Technicians working on delicate plastic electronic housings
- Repair professionals needing quick turnaround times
- DIYers cleaning tight, hard-to-reach circuit board components
Who should skip it
- Audio engineers maintaining faders or potentiometers
- Users working in confined or poorly ventilated workspaces
- Engineers requiring absolute zero-residue for high-precision optics
Performance breakdown
Residue removal
Leaves surfaces completely clean without any lingering film or oily buildup.
Evaporation speed
Rapid drying allows for immediate equipment reassembly and operational turnaround.
Material compatibility
Plastic-safe formula prevents degradation on sensitive electronic housing and components.
Application precision
Aerosol spray provides consistent coverage for both broad and targeted cleaning.
Static protection
Integrated anti-static properties help safeguard delicate circuitry during the cleaning process.
Ease of handling
Ergonomic aerosol design makes it simple to maintain hard-to-reach electronic internals.
Key Specs
Application
Cleaner and degreaser for electronics
Dispensing Method
Aerosol
Evaporation
Rapid
Flash Point
-29
Quantity
12 oz (354mL)
Manufacturer Part Number
409B-340G
Warranty
12 months from the date of purchase by the end user.
Flammability Rating
Flammable
Features
- Plastic safe formula
- Leaves zero residue
- Fast drying and evaporation
- Easy aerosol application
- Mild hydrocarbon scent
- RoHS compliant
- Anti-static properties
What customers say
Customers overwhelmingly value this contact cleaner for its professional grade reliability and safety features. Its nonflammable nature and zero residue formula are critical for maintaining sensitive electronics like circuit boards and switches. Users report exceptional success restoring functionality to components, often fixing scratchy knobs or intermittent connections where other cleaners failed. The quick drying action minimizes repair downtime, making it highly efficient. While the initial cost is higher, the superior cleaning efficacy and essential safety assurances strongly justify the investment for serious technicians and hobbyists seeking dependable results.
Know before you buy
Yes, the 409B-340G is specifically formulated to be plastic-safe, meaning it will not damage or degrade most common plastics found in electronic housings and components.
No, this product is designed to evaporate completely, leaving zero residue behind. This makes it ideal for cleaning sensitive electrical contacts where purity is essential.
It features a rapid evaporation formula that dries almost instantly upon contact, allowing you to return your equipment to service without a long waiting period.
No. While the cleaner is effective, it is highly flammable with a flash point of -29°C. You should always power down and unplug your equipment before cleaning to avoid any risk of fire or electrical hazard.
Yes, the formula includes anti-static properties, which helps prevent the buildup of static charge on the surfaces you are cleaning.
Still have a question?
Ask Hayley anything about this product before you decide.