---
product_id: 34214805
title: "838AR-P Total Ground Carbon Conductive Pen, 4g"
brand: "mg chemicals"
price: "1823616₫"
currency: VND
in_stock: true
reviews_count: 12
category: "Mg Chemicals"
url: https://www.desertcart.vn/products/34214805-838ar-p-total-ground-carbon-conductive-pen-4g
store_origin: VN
region: Vietnam
---

# 0.46 Ω·cm resistivity Dries to touch in minutes 1.0 mm typical trace width 838AR-P Total Ground Carbon Conductive Pen, 4g

**Brand:** mg chemicals
**Price:** 1823616₫
**Availability:** ✅ In Stock

## Summary

> ⚡ Fix, create, and innovate with conductive confidence!

## Quick Answers

- **What is this?** 838AR-P Total Ground Carbon Conductive Pen, 4g by mg chemicals
- **How much does it cost?** 1823616₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/34214805-838ar-p-total-ground-carbon-conductive-pen-4g)

## 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

- • **Rapid Drying Formula:** Get your projects moving fast with a quick-dry acrylic polymer that sets in minutes.
- • **Controlled Flow Valve Tip:** Squeeze to regulate paint flow for clean, consistent conductive paths every time.
- • **Versatile Surface Adhesion:** Bonds seamlessly to plastics, metals, ceramics, and even 3D printing materials like ABS and PLA.
- • **Cost-Effective Conductivity:** An economical alternative to silver or nickel paints for prototyping and repairs without sacrificing quality.
- • **Precision Conductive Traces:** Draw reliable, corrosion-resistant connections with a fine 1.0 mm line width.

## Overview

The MG Chemicals 838AR-P Total Ground Carbon Conductive Pen delivers fast-drying, corrosion-resistant conductive traces with a low volume resistivity of 0.46 ohms·cm. Its valve tip and soft tube design allow precise flow control, making it ideal for repairing or prototyping on a wide range of substrates including plastics, metals, ceramics, and 3D printing materials. Perfect for professionals and makers seeking a reliable, cost-effective solution to restore or create electrical connections.

## Description

The 838AR-P carbon conductive pen is a conductive, fast drying paint in a convenient pen format. It quickly and easily creates conductive traces that are durable, reliable, and corrosion resistant. It adheres to a wide variety of substrates. The paint is a tough acrylic polymer pigmented with high purity Carbon black. The Carbon black imparts superior corrosion resistance as well as high conductivity. This product works best on smooth, flat, and hard surfaces. It has a Valve tip that opens when the pen is pressed against the surface to be drawn on and it has a soft tube, so the flow may be controlled by squeezing the center of the pen. It is used to draw resistors and connect grounds in prototyping, hobbies, or Maker projects. It can be used to create traces where a higher resistance connection is desired such as when drawing in jumpers or other simple electrical connections. It is good for restoring conductivity to contact surfaces and extending contact areas. Use it as an economical alternative to nickel or silver paints where extreme conductivity is not required. Attention! shake rigorously before use. For best results hold pen at angle, depress pen tip against surface, and draw pen across surface while gently squeezing middle.

Review: Fixed my control panel keypad - I'm very glad this product exists. Saved me hundreds of dollars! The material flows pretty well once you get the hang of it. It's similar to a paint pen, but with nickel in solvent. Let it dry! It wont conduct until the metal settles and the solvent dries. It was fun to use a multimeter and watch the resistance drop as the fluid cured. I used this to repair a laminated keypad ribbon cable in a microwave that somehow got a melty trace. I also used it to repair the damage I did trying to fix the problem before i knew this product existed. It will now and forever be a part of my electronics kit. Perfect for membrane trace repair! Adhesion is good on plastic. The output width is about 2mm. It's a fluid but not super runny, especially after the solvent flashes off. Build up a couple of coats for best conduction. It takes a minute to get used to dispensing the material. The pen uses a plunger valve tip that has to be pushed against the surface before flow will start. You control the flow with how hard the tube is squeezed. Wiping the tip after every lift-up makes things go smoother.
Review: The product works, but the delivery mechanism is hard to use. - The product itself absolutely works. Based on my experience, I suspect anybody who claims otherwise had a technique issue. Because the pen itself is a pain in the butt to use, produces a relatively thick line, and has every bit of the problem with rollerball pens that use thick inks. Add the necessity to press the bulb to get the ink to flow at all and it's not a recipe for ease of use. I took a point off for that, but the product self is working for my use case (repairing the traces on a flex ribbon cable for a 35-year old IBM Model M keyboard) so four stars for that. If you have a steady hand with a fine detail brush and can get a pot of the ink that might be a better way to go. Or perhaps a sacrificial dip pen.

## Features

- Creates durable, reliable, conductive connections
- Volume resistivity: 0.46 ohms·cm
- Typical trace width: 1.0 mm
- Dries to touch in minutes
- Adheres to plastics, epoxy, copper, aluminum, ceramics, wood, and most electronic substrates as well as ABS, PLA, and other 3D printing plastics

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01LZX06PL |
| Best Sellers Rank | #138,253 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #69 in Electrically Conductive Adhesives |
| Date First Available | September 24, 2016 |
| Item Weight | 0.387 ounces |
| Item model number | 838AR-P |
| Manufacturer | MG Chemicals |
| Product Dimensions | 3 x 1 x 8 inches |

## Images

![838AR-P Total Ground Carbon Conductive Pen, 4g - Image 1](https://m.media-amazon.com/images/I/31MFbpmetdL.jpg)

## Questions & Answers

**Q: Will this work to coat the non-working rubber buttons on a remote control**
A: Yes, this worked great. First, clean the circuit board where the contacts are using Isopropyl alcohol.  I also used Iso to clean off the rubber dot, which is usually a conductive carbon substance.  Then apply the *carbon* version of this product to the black dot.  Cover the whole surface and let it dry completely before re-assembling.

**Q: Can this be used to repair a broken strip in a car rear defogger?**
A: I just tested a 1/2" long x1/8" wide strip on a piece of pyrex glass and got 0 resistance for that length. It seems to conduct well for a short distance and stuck to the glass very well. I hope this helps.

**Q: Does it work for making a PCB?**
A: In my opinion, it's far from the ideal for making your own PCB. I can see it being used for prototyping of low voltage/low current circuits.This particular compound is based on nickel, which is not a as conductive as copper.This pen would work fine for the small repairs like cuts or tears in the existing PCB traces. BTW, there's a more conductive version of this pen which is based on silver.Aside from conductivity issue, there's an issue of securing parts to PCB. I,also, doubt you can solder to the trace drawn with this pen.

**Q: Is this pen good for making a jumper on a circuit board?**
A: Yes, it's great for that but even the carbon conductive (lowest quality) pen would work for that

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fixed my control panel keypad
*by L***K on October 5, 2023*

I'm very glad this product exists. Saved me hundreds of dollars! The material flows pretty well once you get the hang of it. It's similar to a paint pen, but with nickel in solvent. Let it dry! It wont conduct until the metal settles and the solvent dries. It was fun to use a multimeter and watch the resistance drop as the fluid cured. I used this to repair a laminated keypad ribbon cable in a microwave that somehow got a melty trace. I also used it to repair the damage I did trying to fix the problem before i knew this product existed. It will now and forever be a part of my electronics kit. Perfect for membrane trace repair! Adhesion is good on plastic. The output width is about 2mm. It's a fluid but not super runny, especially after the solvent flashes off. Build up a couple of coats for best conduction. It takes a minute to get used to dispensing the material. The pen uses a plunger valve tip that has to be pushed against the surface before flow will start. You control the flow with how hard the tube is squeezed. Wiping the tip after every lift-up makes things go smoother.

### ⭐⭐⭐⭐ The product works, but the delivery mechanism is hard to use.
*by M***S on October 1, 2025*

The product itself absolutely works. Based on my experience, I suspect anybody who claims otherwise had a technique issue. Because the pen itself is a pain in the butt to use, produces a relatively thick line, and has every bit of the problem with rollerball pens that use thick inks. Add the necessity to press the bulb to get the ink to flow at all and it's not a recipe for ease of use. I took a point off for that, but the product self is working for my use case (repairing the traces on a flex ribbon cable for a 35-year old IBM Model M keyboard) so four stars for that. If you have a steady hand with a fine detail brush and can get a pot of the ink that might be a better way to go. Or perhaps a sacrificial dip pen.

### ⭐⭐⭐⭐⭐ It works if you persevere.
*by D***F on September 8, 2022*

The first pen that arrived had mechanical problems that made it useless. I am giving a 5 star rating because of MG Chemicals excellent customer service. On my complaint, they sent me another pen forthwith. I used it to draw a missing trace on a PCB. It won't be as pretty as a manufactured trace but it will do the job. It can be a challenge to get the ink to flow but eventually it will. My PCB is saved thanks to MG Chemicals.

## Frequently Bought Together

- MG Chemicals 838AR-P Total Ground Carbon Conductive Pen, 4g
- CaiKot 44, Conductive Silver/Carbon Coating for most surfaces

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-03*