---
product_id: 1601133
title: "Lineco pH Testing Pen for Paper or Paperboard Products."
brand: "lineco"
price: "KD 3.53"
currency: KWD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.kw/products/1601133-lineco-ph-testing-pen-for-paper-or-paperboard-products
store_origin: KW
region: Kuwait
---

# Precise pH detection Results in seconds Made in USA quality Lineco pH Testing Pen for Paper or Paperboard Products.

**Brand:** lineco
**Price:** KD 3.53
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Lineco pH Testing Pen for Paper or Paperboard Products. by lineco
- **How much does it cost?** KD 3.53 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/1601133-lineco-ph-testing-pen-for-paper-or-paperboard-products)

## Best For

- lineco enthusiasts

## Why This Product

- Trusted lineco brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **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.

## Overview

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.

## Description

Lineco pH Testing Pen for Paper or Paperboard Products.

## Features

- Basic Info: Material created and made in USA. Lineco is a leading and trusted brand for archival art, photography, and framing supplies
- Quick reflection: Shows within seconds if your paper products are archival. Clear or yellow line means bad - Purple line means archival
- Storage condition: Paper can be reasonably long-lived if its pH is 6.0 or higher, especially if it is well made and carefully used and stored. In order to last for centuries in today's polluted air, it must have an alkaline reserve and this usually means a pH of 7.0 or greater
- Easy to use: Simply draw a small line on the material you wish to test. The line drawn will turn purple on most papers if there is an indication of pH neutrality
- Please note: This is a pH indicator only. Unreliable results may occur on colored, coated, or unbuffered materials

## Product Details

- **Brand:** Lineco
- **Ph Range:** 6.8 and above
- **Unit Count:** 1.0 Count
- **Manufacturer:** Lineco
- **UPC:** 099295003506 099295530811

## Images

![Lineco pH Testing Pen for Paper or Paperboard Products. - Image 1](https://m.media-amazon.com/images/I/61FB-6FHRgL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does the pen tip turn color after the first several uses? Mine went from yellow to purple.**
A: Mine's half of the tip turned from orange into purple the first time I used it. Some say it will fade back over time while others say it's permanent. I don't know about validity of readings but I suppose they should still be consistent.

**Q: can this be used on fabrics?**
A: Sorry, it cannot. It only can be sued on paper or paperboard products. Thank you.

**Q: Would this work to test stickers?**
A: I haven't tried it specifically on stickers, but it has worked on all the various surfaces I have tested so far.

**Q: Will this work on black paper**
A: I'm not sure that it would, but I haven't specifically tried it on black paper.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This really works on watercolor paper (I tested on acid paper, too)
*by P***E on March 18, 2025*

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.

### ⭐⭐⭐⭐⭐ Works great
*by S***R on June 25, 2025*

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

### ⭐⭐⭐⭐⭐ Works the same regardless of the pen’s tip color
*by A***O on July 25, 2025*

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!

## Frequently Bought Together

- Lineco pH Testing Pen for Paper or Paperboard Products.
- LINECO Neutral pH Adhesive 8 Oz, Acid-Free, All-purpose Glue, Dries Clear and Remains Flexible. Used for Bookbinding and Book Repair, Framing, Collages, Paper Art and Crafts

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-13*