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MG Chemicals 835-PX2 Flux Pen Soldering, 2 x 10 mL, Amber
MG Chemicals

MG Chemicals 835-PX2 Flux Pen Soldering, 2 x 10 mL, Amber

Bottom line: The MG Chemicals 835-PX2 Flux Pen Soldering: Type RA rosin flux meeting J-STD-004 Type ROM1, per MG Chemicals; main trade-off: rosin-based formula, not a no-clean or water-soluble flux.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For PC and retro-hardware cleaning and maintenance tools, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Type RA rosin flux meeting J-STD-004 Type ROM1, per MG Chemicals
  • ✓ Rated for both leaded and lead-free solder chemistries
  • ✓ Pen tip places flux precisely on pads and chip carriers
  • ✓ Two 10 mL pens per pack, so a spare is always on hand

Cons

  • ✗ Rosin-based formula, not a no-clean or water-soluble flux
  • ✗ 10 mL per pen runs out quickly for high-volume work
  • ✗ Pen tip is slow for fluxing large board areas
  • ✗ Rosin residue may need cleanup for a tidy finished board

Manufacturer description

The MG Chemicals 835-PX2 Flux Pen twin pack gives you two 10 mL rosin flux pens for precise flux placement on printed circuit boards. Each pen holds MG Chemicals' 835 Type RA (rosin-activated) flux, made from pure water-white (WW) grade gum rosin in a solvent system with strong activators. MG Chemicals states it meets the J-STD-004 requirements for Type ROM1 flux. The flux works with both leaded and lead-free solder. You can use the same pen whether you are reflowing vintage tin-lead joints on a retro console board or doing lead-free rework on newer hardware. MG Chemicals lists fast wetting…

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SpecPicks Verdict

SpecPicks scored MG Chemicals 835-PX2 Flux Pen Soldering using a rating × review-volume × price-fit model applied to published specs and reviews across the tools & maintenance category. MG Chemicals's tools & maintenance lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for tools & maintenance: PC towers accumulate significant dust in 3–6 months, so cleaning frequency drives cordless vs. canned-air tradeoff decisions. Match the device's RPM or CFM rating to your case size, and confirm battery runtime covers a full tower cleaning before ordering. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Does the MG Chemicals 835-PX2 flux pen work with lead-free solder?

Yes. MG Chemicals says the 835 flux works with both leaded and lead-free solder, so one pen covers vintage tin-lead rework and modern lead-free joints.

What type of flux is in the 835-P pen?

It is a Type RA (rosin-activated) flux made from pure water-white (WW) grade gum rosin. MG Chemicals states it meets the J-STD-004 requirements for Type ROM1 flux.

How much flux do you get in the 835-PX2 pack?

The pack contains two pens with 10 mL of flux each, 20 mL in total.

Is this flux pen good for PCB rework and retro console repair?

MG Chemicals designed the 835-P for precise flux placement in prototyping and rework/repair on printed circuit boards, including chip carriers. That fits retro console and vintage PC board repair.

Do I need to clean the flux residue after soldering?

MG Chemicals lists the 835 flux as non-corrosive and non-hygroscopic. Cleaning requirements depend on your application, so check the MG Chemicals technical data sheet for its residue and cleaning recommendations.

Key Features

  • For leaded and lead-free solder
  • Fast wetting
  • Non-corrosive
  • Non-hygroscopic
  • RoHS compliant

Full Specifications

BrandMG Chemicals

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MG Chemicals 835-PX2 Flux Pen Soldering, 2 x 10 mL, Amber
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