Metron Marker
Why Choose Metron Markers™
Designed for longevity
With simple maintenance, their lifespan can be extended almost indefinitely. If the ink thickens over time, it can be restored by mixing in water—keeping the marker performing like new and minimizing waste.
Environmentally Friendly
Metron products are RoHS and REACH compliant, with water-based formulations that prioritize user safety and environmental responsibility. By reducing atmospheric contamination and eliminating harmful substances, we help protect both people and the planet without compromising performance.
Marker for Every Job
Metron offers one of the broadest selections of marker tips, colors, and ink formulas available. From ultra-fine points for detailed work to long tips for hard to reach markings, our products adapt to the task at hand. With a wide range of colors and specialized formulations, there’s a Metron solution to suit virtually every industry and application.
Proven Track Record
With over 50 years of proven performance, Metron Markers™ are trusted in mission-critical industries from Aerospace, Medical, Defense, Electronics, and various other industries.
Custom Formulations
Metron offers custom ink formulations tailored to your exact requirements. From unique colors and tips to formulas for performance in demanding environments, we deliver formulas designed for your application.
Make Your MARK with Precision
Metron Markers™ are trusted worldwide for their accuracy, versatility, and durability. Offered in pens, bulk containers, and air-dispensed syringes, they adapt to your process with Standard, Micro, and Long-tip options.
Available in over 14 vibrant colors—including Red, Blue, White, Silver, and even Hot Pink— Metron Markers™ give you the visibility and reliability you need in Aerospace, Defense, and Medical applications.
- RoHS and REACH compliant
- Variety of tip sizes and ink formulas
- Easy maintenance with extendable shelf life
- Cost-effective without compromising performance
Use Cases for the Metron Marker™
Permanent Marker
For precision marking on virtually any surface with long-lasting results.
Torque Seal
Creates visual indicator of proper torque application and prevents loosening.
Tamper Seal
Provides evidence if parts have been accessed or manipulated.
Torque Stripe
Connects adjoining parts to show if components have loosened.
Have another use case? Let us know!
Metron Marker™ Features
The Needle
There are three different size needles available:
- Standard needle: 1" in length and has an orifice of 0.031". It has an output of approximately 12,000 dots.
- Microtip needle (M): 1" in length and has an orifice of 0.013". It dispenses over 25,000 dots. For the smallest dot or for fine lettering the microtip is easier to use.
- Long tip needle (L): 3.25" in length with an orifice of 0.031". The long tip needle is useful in hard to reach places.
The Pen
With the cap on, shake the pen for 10 or 15 seconds to activate the ink flow. Pull off the cap and, with the pen in marking position, give it a little squeeze. This is how you feed and control the ink.
For a little dot, a little squeeze; For a continuous line, a continuous squeeze. To do lettering, just keep the tip of the needle wet and draw the lines. When you release the finger pressure, the pen will suck the ink out of the needle point.
Ink Formulations
RoHS compliant, flexible, non-toxic, and non-staining. Most of these inks use water as a base carrier instead of solvents, so they do not contribute to atmospheric contamination.
Permanent Ink
For precision marking on virtually any surface with long-lasting results.
Removable Ink
For precision marking on virtually any surface with long-lasting results, Permanent ink is a water based, flexible, non-conductive, water-resistant, and has good solvent resistance. Permanent ink is used as a Torque Seal, vibration proofing, and for tamper proofing. Our removable ink can be easily cleaned off with water, making it ideal for temporary marking needs. It provides clear, visible marks that can be removed when no longer needed.
Solvent Resistant Ink
Designed to withstand exposure to common solvents, our solvent resistant ink is ideal for applications where marked components will come into contact with cleaning agents or other solvents.
Aquaclean Ink
Our Aquaclean ink is specially formulated to be easily cleaned with water. It provides excellent visibility while being environmentally friendly and easy to remove when needed.
Solvent Washoff Ink
This specialty ink can be removed with appropriate solvents, making it ideal for applications where water cleaning is not suitable but marks still need to be removable.
Frequently Asked Questions
Does the Removable Ink formula leave a stain once removed?
No — once removed, it leaves no bleed, residue, or stain.
Where can I find a Safety Data Sheet (SDS)?
SDS documents are available on the company’s website.
Are there instructions on how to use a Metron Marker?
Yes — see the "Metron Marker How to Use Guide" on the website.
Will the mark remain if the ink is baked?
Yes — it withstands temperatures up to 350 °F before discoloring.
How much ink is in a Metron Marker?
Approximately 6 ml; standard tip yields ~12,000 dots, microtip ~25,000 dots.
Are custom colors available?
Yes — custom colors available upon minimum-order requirement; contact Sales.
Can Metron Markers be used for torque striping?
Yes — Permanent Ink formula is used extensively for torque sealing and striping.
Are the markers available empty (not prefilled)?
Yes — Empty Pens available in Standard (EP), Long-tip (EPL) or Microtip (EPM) options.
Which is the torque seal marker?
The Permanent Ink formula is used as a torque seal and for torque striping.
What solder flux formulas are available?
RMA, No-Clean, and Water Clean flux formulas are prefilled in markers.
How is the Solvent Resistant formula removed?
Easily removed with hot water.
What is the shelf-life of a Metron Marker?
Nearly indefinite if stored airtight and moisture-proof. Ink may thicken in ~3 months if not stored properly. Moisture can be restored with a drop of water in cap depression, shaking, then using.
Are the solder flux pens usable while soldering on hot surfaces?
Yes — stainless-steel tips allow continuous dispensing under heat; felt-tip pens will burn or clog.
How is the fluid dispensed?
By finger pressure: shake for 10–15 seconds, remove cap, squeeze gently for dots/lines, keep tip wet for lettering.
Is ink available in bulk?
Yes — offered in pints, gallons, or 5-gallon containers of bulk ink.
Are Metron Markers refillable?
Designed as disposable, but some users refill using bulk ink.
How long does it take for the ink to dry?
Depends on volume, ambient conditions, and ink formula — from ~20 seconds to a few minutes; continues to harden up to one week.
What colors are available?
Up to 13 colors are available; Permanent Ink formula supports full 13-color range.
What tips are available?
Standard Tip (1″ length, 0.031″ orifice), Long-tip (3″ length, 0.031″ orifice), and Microtip (1″ length, 0.013″ orifice).
How does one use the clean-out wire?
Remove cap, insert wire into needle cannula, slide fully, remove — dislodges clogs.
How to prevent clogging?
Clean with wire after use, cap the pen, and store upright with tip up.
