Lineco pH Testing Pen for Paper or Paperboard Products.
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Lineco pH Testing Pen for Paper or Paperboard Products.

4.4/5
Product ID: 1601133
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Details

  • Brand
    Lineco
  • Ph Range
    6.8 and above
  • Unit Count
    1.0 Count
  • Manufacturer
    Lineco
  • UPC
    099295003506
📏Precise pH detection
🕒Results in seconds
🇺🇸Made in USA quality

Description

🖊️ Preserve your legacy—test your paper’s future today!

  • ARCHIVAL ASSURANCE - Purple line means your paper is pH neutral or alkaline—ideal for lasting preservation.
  • KNOW BEFORE YOU STORE - Avoid costly damage by testing paperboard and paper before framing or archiving.
  • INSTANT ARCHIVAL CHECK - Get clear pH results within seconds—no waiting, no guesswork.
  • SIMPLE ONE STROKE TEST - Just draw a line and watch the color reveal your paper’s longevity potential.
  • TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA by Lineco, a leader in archival supplies.

The Lineco pH Testing Pen offers a quick, reliable way to determine the archival quality of paper and paperboard products. Made in the USA, it delivers instant color-coded results—purple indicates pH neutrality or alkalinity essential for long-term preservation. Ideal for professionals managing valuable documents, art, or photography, this pen helps ensure materials will withstand the test of time.

Have a Question? See What Others Asked

Does the pen tip turn color after the first several uses? Mine went from yellow to purple.
can this be used on fabrics?
Would this work to test stickers?
Will this work on black paper

Reviews

4.4

All from verified purchases

P**E

This really works on watercolor paper (I tested on acid paper, too)

I occasionally run across a new brand of watercolor or mixed media where the listing says it's acid-free, but the pad doesn't say anything about it. I wondered if there was a way to test the paper that didn't involve grinding it up and putting it in Ph neutral water, and in my searches, someone on a forum recommended this, theLineco pH Testing Pen for Paper or Paperboard Products.. I ordered one immediately.When I opened it up, there was a label firmly stuck over the part that tells what color to look for, so I came back to the listing and noticed a reviewer said this was just a purple marker. So I did a test.I used the marker on 3 pads of watercolor paper. All three showed a purple mark, which is the sign the paper is Ph neutral. Then I took one of those sheets of paper and gently applied lemon juice across the surface. When it dried, I tried the maker on it - and got a clear line, which means the paper is "unsuitable" or acidic.So yes, this pen does work. It works if you want to test your paper for Ph to make sure it won't yellow, become brittle or cause ink, watercolors or pencil to fade over time. Good news for me is that the very nice paper I got recently that didn't say it was acid-free on the pad got a purple mark from the test pen. One of the older pads that claimed in the listing to be acid-free but not on the pad ended up with a clear mark. Super product.

S**R

Works great

Works great. I use it to check all my books and paper.

A**O

Works the same regardless of the pen’s tip color

I really love this pen. I have all kinds of journals, sketchbooks, loose papers, and cardstock that I enjoy using for journaling and this pen is a fantastic tool to check anything that isn’t labeled as acid-free or that one isn’t completely sure about. A simple swipe of the pen on the paper will reveal whether it’s acidic or not - the line left on the page will instantly appear purple for an alkaline pH or, alternatively, instantly turn clear/transparent or yellow for an acidic pH.When it arrived, I spent a fun evening going through stacks of journals and paper and checking everything. My pen arrived with a solid purple tip (some seem to have light tips out of the package) but the marks it left behind on the pages changed color appropriately depending on the pH of the paper.I tested the pen on known (labelled as such) acid-free sketchbooks, journals, papers, and cardstock from The Paper Studio (Hobby Lobby), Peter Pauper Press, Recollections from Michael’s, and a few other random things and then to test for acidity I also tested the pen on some Moonster journals and old, yellowed (some nearly tan) notepads and notebooks that are definitely acidic and aging. The pen’s mark changed color appropriately - purple for everything labelled as acid-free: sketchbooks, The Paper Studio, Peter Pauper Press, and Recollections and then yellow or clear/transparent for old and yellowing notepads, notebooks, and Moonster - even though the tip of the pen itself was solid purple. I saw that some people were concerned about the color of the pen’s tip upon opening the pen for the first time, so whether the tip on your pen is purple or light when it arrives it’ll work the same regardless.An essential tool to keep on hand for anyone with an eye towards acid-free and archival-quality materials!

N**Y

Must Have.

Game changer for making sure your paper is archival! Love it.

M**E

I used it to test some mattes I was going ...

I used it to test some mattes I was going to use to frame my diplomas. It indicated acid by changing color, so it saved me some grief. It's a reasonable product for the price and seems to work.

P**L

Actually tests paper for acidity

This pen is easy to use. I use it to make sure the papers I use for stamp albums are acid-free.

D**.

Good for quick test of paper

We used this to test the pages of our family bible and other paper products to determine their composition. This is information that is necessary to get the proper storage boxes and paper- ie. buffered vs. unbuffered boxes and paper.

Q**N

Arrived dry: PLUS a completely capped pen dries up after not being used.

My first order had to be immediately replaced for being completely dry on arrival.The second pen, after being used for 3 quick pH tests in 2019---less than 10 seconds of open-cap time---was stored in a marker-appropriate way: sitting in a drawer on its side with the lid capped tightly. But when I went to use it in mid-2023---the marker was dead as a doornail.So, be warned. The marker will dry up. It will dry up between the time you first buy it and the time you need it later.It could be argued that it is not reasonable for me as a consumer to expect a marker to last from late 2019 until mid 2023---and perhaps the physical nature of the chemical materials that saturate the marker make it physically impossible to support marker age -- however, I can tell you that I have markers of *all* kinds that are over 15 years old that are stored correctly and that last *just fine*. And when I pay EIGHT DOLLARS for a marker...I expect it to arrive functioning, and I expect it to last!So...just a heads up...expect you'll have to return it if it arrives dry...and don't expect to be able to *store* it and then use it again.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

Lineco Ph Testing Pen For Paper Or Paperboard Products | Desertcart KUWAIT