Lineco pH Testing Pen
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Product Information
Full details
The Lineco pH Testing Pen is an essential tool for archivists, collectors, and artists who need to quickly verify the acidity of paper and board materials to ensure long-term preservation. By providing an instant visual indicator of whether a material is acid-free, it helps users protect valuable documents and art projects from degradation. While it is incredibly convenient for standard paper, users should be aware that results can be inaccurate or misleading when testing dark, colored, or heavily coated papers.
All features
| Brand | Lineco |
|---|
Extended Product Information
FAQs
What does a purple mark indicate?
A purple mark indicates that the paper has a pH of 6.8 or higher, meaning it is alkaline or neutral and suitable for archival purposes.
What does a yellow or clear mark indicate?
A yellow or clear mark indicates the presence of acid, meaning the material is not suitable for long-term preservation.
Can I use this on black paper?
No, the color change will not be visible on black or very dark papers. It is best used on light-colored, uncoated surfaces.
Will the test mark be permanent?
The mark left by the pen is a chemical indicator and will remain visible. Because of this, you should always test on an inconspicuous area.
Does this pen work on fabric?
The pen is specifically designed for paper and board. It is not intended for use on textiles or fabrics.
How long will the pen last?
The lifespan depends on usage and storage. Storing the pen capped in a cool environment will help maximize its useful life.
Troubleshooting
The pen is not leaving a mark on the paper.
Ensure the cap was not left off for an extended period, which can dry out the nib. Try pressing the tip gently on a piece of scrap paper to re-saturate the tip.
The mark is the same color as the paper.
This often occurs on colored or coated paper. Verify the test on a piece of plain, white absorbent paper to ensure the pen is still functioning correctly.
Pros and Cons
Pros
- Extremely fast and easy to use
- Compact and portable design
- Provides a clear visual reference for pH levels
- Cost-effective solution for paper assessment
Cons
- Unreliable results on colored or dark paper
- May not work correctly on coated or treated surfaces
- Requires a small mark on the material being tested
- Limited shelf life once the indicator solution starts to age
Setup, Compatibility & Care
- Setup: The pen is ready to use immediately out of the packaging. Simply uncap and draw a light, small line on the surface.
- Compatibility: Best suited for standard, uncoated paper and mounting boards. It is not recommended for glossy, metallic, or dark-colored papers, as the ink color will not show up properly against the background.
- Care: Store the pen in a cool, dry place with the cap firmly snapped shut to prevent the indicator solution from drying out or evaporating. Keep away from direct sunlight to preserve the integrity of the chemical indicator.