MG Chemicals 835-P Rosin Flux Pen, 10ml, Case of 5
MG Chemicals 835-P Rosin Flux Pen, 10ml, Case of 5
MG Chemicals 835-P is a 10 mL rosin flux pen for precise flux application during PCB prototyping, rework and repair. Its chiseled tip delivers moderately active, Water White grade gum rosin flux to the soldering area, supporting fast wetting with both leaded and lead-free solders. This listing is a case of five pens.
Best Uses / Applications
For electronics manufacturing, engineering benches and repair departments working on conventional and surface-mount circuit boards. The pen format suits localized flux application without coating a larger area.
Key Features
- Moderately active rosin formulation with effective activators.
- Chiseled felt tip for controlled application.
- Fast wetting for leaded and lead-free solder processes.
- Non-conductive, non-corrosive and fungus-resistant post-soldering residues. The manufacturer also describes the residue as hydroscopic; cleaning remains recommended.
- Manufacturer identifies the flux as IPC J-STD-004B ROM1 and RoHS compliant.
Technical Specifications
| Part number | 835-P |
|---|---|
| Flux type | Rosin; ROM1 / RA |
| Activity | Moderate |
| Net volume per pen | 10 mL |
| Net weight per pen | 9.30 g |
| Color | Light amber |
| Solids | 50% |
| Density | 0.9 g/mL |
| Halides by weight | 0.44% |
| Copper mirror test | Partial removal |
| Corrosion test | Pass |
| Cleaning | Recommended |
| Manufacturer shelf life | 5 years under specified storage conditions |
| Storage | 18–27 °C, dry and away from sunlight |
| Sales package | Case of 5 pens |
Flux Format Comparison
| 835-P rosin pen | Moderate-activity ROM1 flux with localized chiseled-tip application; cleaning recommended |
|---|---|
| Bulk liquid flux | Consider a liquid format when the process needs broader-area application; confirm the exact formulation before substitution |
Application and Care
Read the SDS before use. Depress the tip against a hard surface until wet, without flooding it. Gently brush the tip onto the soldering area, pressing only as needed to keep it saturated. After soldering, clean residue with a compatible flux remover; the data sheet identifies MG 4140 or 413B.
Frequently Asked Questions
Is 835-P suitable for lead-free solder?
Yes. The manufacturer specifies it for both leaded and lead-free solders.
Is this a no-clean flux pen?
No. This is moderately active rosin flux, classified ROM1 / RA. Its data sheet recommends cleaning after soldering.
How much flux is in each pen?
Each 835-P pen contains 10 mL, with a listed net weight of 9.30 g.
How do I start the flow?
Depress the felt tip on a hard surface until it becomes wet, avoiding flooding. Press only as needed while applying.
What is included in this listing?
A case of five 835-P 10 mL pens.
How should unused pens be stored?
Store at 18–27 °C in a dry location away from sunlight, following the SDS.
Related Resources
Explore MG Chemicals and Flux Pens. Learn more in our Soldering, Desoldering & Rework resource hub.
