--- product_id: 10576073 title: "835-P Rosin Flux Pen" brand: "mg chemicals" price: "$48.30" currency: USD in_stock: true reviews_count: 8 category: "Mg Chemicals" url: https://www.desertcart.us/products/10576073-835-p-rosin-flux-pen store_origin: US region: United States of America --- # Fast wetting action Precise pen applicator RoHS compliant & non-corrosive 835-P Rosin Flux Pen **Brand:** mg chemicals **Price:** $48.30 **Availability:** ✅ In Stock ## Summary > 🛠️ Flux like a pro — solder smarter, not harder! ## Quick Answers - **What is this?** 835-P Rosin Flux Pen by mg chemicals - **How much does it cost?** $48.30 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/10576073-835-p-rosin-flux-pen) ## 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 - • **Clean & Reliable:** Non-corrosive, non-hygroscopic formula ensures stable, residue-free joints - • **Effortless Precision:** Spring-loaded felt tip for controlled, mess-free flux application - • **Universal Compatibility:** Works seamlessly with both leaded and lead-free solder chemistries - • **Long-lasting Performance:** 10mL volume designed to last through extensive prototyping and repairs - • **Industry Standard Quality:** Meets Type ROL1 flux requirements per J-STD-004 for professional-grade results ## Overview The MG Chemicals 835-P Rosin Flux Pen delivers fast, precise flux application with a spring-loaded felt tip, ideal for both leaded and lead-free soldering. Its non-corrosive, RoHS-compliant formula ensures clean, reliable joints without mess or waste, making it a must-have for prototyping, rework, and repair on PCBs and surface-mounted devices. ## Description DESCRIPTION: the 835-p rosin flux pen contains a Type RA rosin-activated flux composed of Pure water white (WW) grade gum rosin. It is a unique solvent system that contains very effective activators. The superior fluxing remains consistent throughout the entire aeration process. The 835 provides fast wetting action and complies with all requirements for Type Rom1 flux per j-std-004. Application: the 835-p pen is designed to dispense flux in a precise application and used for leaded and lead-free chemistries. Excellent for prototyping and rework/repair on printed circuit boards. Works well on chip carriers, heat sinks, surface mounted device pads, switches, and sockets. Application instructions: the flux pen controls the flow via a spring-loaded felt tip. This helps keep evaporation to a minimum between use. 1. Depress the tip against a hard surface until the felt tip gets wet, but not flooding. 2. Gently brush the wet tip onto the soldering area to apply. To keep the felt saturated and the flow controlled, only press in the tip as needed. Attention! do not continuously keep the tip Depressed or do not press too hard. This can jam the Valve open and cause flooding. Note that a fresh felt tip will take a several seconds to fully saturate, so expect a delay before the flux starts to flow on first use. Moving the tip in circular motion can help loosen the felt fibers and speed up the saturation process. Review: I wish I had tried this sooner!!! - I was surprised at the quality of this flux pen! A quick brush of the wire/base to be soldered, and boom - easy joint! No mess/spilling/waste/brush of a liquid dispenser, no goop of a paste. I solder infrequently (this one pen will probably last me a year), but this will be the only way I get my flux in the future. It is slightly more expensive to use the pen applicator, but it is my opinion that the ease of use and the results more than justify the extra expense. If you solder a lot, you may wish to go another route...but I would recommend giving the pen a try. I love it and won't be going back!!! Note: When first starting, you have to push in the tip a little bit to get the flux to flow...after that, you are in business and it is smooth sailing! Review: works like magic - I was having fits with lead free solder until I tried this is is very effective at wetting the surfaces and a little bit goes a long way. I found that if you add flux to the joint before you solder you can just get a small blob of solder on the iron and it will solder itself the minute it comes into contact. If it is a large through hole joint, it will tack it nicely allowing you to easily add more solder. If it is a small joint (30AWG wire for protoboards) it will fully solder the joint in seconds. I usually remove the flux with IPA, but not sure if that is necessary based on some of the other reviews. I have not tried it with solder wick, but based on how it wicks to large copper pads I expect it would work well for solder wick also. I do agree with the other reviewers about the tip being too large. Luckily I deal with mostly through hole and don't have tight spaces to get into. If you have been soldering without a flux pen dont hesitate to get this, you will wonder how you got along without it. ## Features - For leaded and lead-free solder - Fast wetting - Non-corrosive - Non-hygroscopic - RoHS compliant ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0080X79HG | | Best Sellers Rank | #133,611 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #129 in Soldering Flux | | Brand | MG Chemicals | | Brand Name | MG Chemicals | | Customer Reviews | 4.6 out of 5 stars 1,523 Reviews | | Global Trade Identification Number | 00779008835661 | | Included Components | Satisfaction | | Item Form | Pen | | Item Height | 4 millimeters | | Item Nype Name | Flux Pen | | Item Volume | 0.34 Fluid Ounces | | Item Weight | 0.01 Kilograms | | Manufacturer | MG Chemicals | | Number of Items | 1 | | Primary Supplement Type | Lead free | | UPC | 779008835661 | | Unit Count | 1 Count | | Warranty Description | warranty@mgchemicals.com | ## Images ![835-P Rosin Flux Pen - Image 1](https://m.media-amazon.com/images/I/61Dc6CbggBL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ I wish I had tried this sooner!!! *by A***N on January 27, 2017* I was surprised at the quality of this flux pen! A quick brush of the wire/base to be soldered, and boom - easy joint! No mess/spilling/waste/brush of a liquid dispenser, no goop of a paste. I solder infrequently (this one pen will probably last me a year), but this will be the only way I get my flux in the future. It is slightly more expensive to use the pen applicator, but it is my opinion that the ease of use and the results more than justify the extra expense. If you solder a lot, you may wish to go another route...but I would recommend giving the pen a try. I love it and won't be going back!!! Note: When first starting, you have to push in the tip a little bit to get the flux to flow...after that, you are in business and it is smooth sailing! ### ⭐⭐⭐⭐⭐ works like magic *by M***B on February 12, 2016* I was having fits with lead free solder until I tried this is is very effective at wetting the surfaces and a little bit goes a long way. I found that if you add flux to the joint before you solder you can just get a small blob of solder on the iron and it will solder itself the minute it comes into contact. If it is a large through hole joint, it will tack it nicely allowing you to easily add more solder. If it is a small joint (30AWG wire for protoboards) it will fully solder the joint in seconds. I usually remove the flux with IPA, but not sure if that is necessary based on some of the other reviews. I have not tried it with solder wick, but based on how it wicks to large copper pads I expect it would work well for solder wick also. I do agree with the other reviewers about the tip being too large. Luckily I deal with mostly through hole and don't have tight spaces to get into. If you have been soldering without a flux pen dont hesitate to get this, you will wonder how you got along without it. ### ⭐⭐⭐⭐⭐ Great Flux Pen *by P***G on November 30, 2016* This is the first flux pen I have used and I was doubtful mainly because of the reviews I read. That being said this is a great product once you get the hand of priming the tip.. It's a bit hard to get the tip loosened up to get the flux flowing but with some gentle pressure using a towel and hand pressure on the felt tip slowly work the tip back into the body and it will start flowing. After that you are good to go. I use it on all my soldering now and it has made a world of difference in the quality of my solder joints especially the fine electronic parts I use for building mini-quads. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/10576073-835-p-rosin-flux-pen](https://www.desertcart.us/products/10576073-835-p-rosin-flux-pen) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-16*