Does the pen tip turn color after the first several uses? Mine went from yellow to purple.

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.

can this be used on fabrics?

Sorry, it cannot. It only can be sued on paper or paperboard products. Thank you.

Would this work to test stickers?

I haven't tried it specifically on stickers, but it has worked on all the various surfaces I have tested so far.

Will this work on black paper

I'm not sure that it would, but I haven't specifically tried it on black paper.

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Lineco pH Testing Pen for Paper or Paperboard Products.

Product ID: 1601133

Details

Brand
Lineco
Manufacturer
Lineco
Ph Range
6.8 and above
UPC
099295003506
Unit Count
1.0 Count

🟣Purple = archival quality

🖊️Instant pH detection

🇺🇸Made in USA, trusted brand

€ 18.08

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Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🖋️ Don’t guess—know your paper’s future with a single stroke!

PRESERVE YOUR LEGACY - Ensure your documents and art last centuries by verifying alkaline reserves with ease.
EFFORTLESS PORTABLE - Compact pen design lets you test anywhere—no lab needed, just a quick swipe.
INSTANT ARCHIVAL CHECK - Draw a line, see results in seconds—purple means your paper is archival-grade.
PRECISION P H INDICATOR - Detects pH 6.5+ with clear color change, ensuring your materials stand the test of time.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA by Lineco, a leader in archival and framing supplies.

The Lineco pH Testing Pen offers a fast, reliable way to determine the acidity or alkalinity of paper and paperboard products. Made in the USA by a trusted archival brand, it uses a chlorophenol red indicator that turns purple on papers with pH 6.5 or higher, signaling archival quality. Ideal for professionals preserving art, photography, or important documents, this pen helps ensure longevity by identifying materials that can withstand environmental challenges.

Specifications

ASIN	B000KNJCSS
Best Sellers Rank	#68,566 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #486 in Drawing Pens
Brand	Lineco
Brand Name	Lineco
Customer Reviews	4.5 out of 5 stars 218 Reviews
Included Components	Lineco pH Testing Pen for Paper or Paperboard Products.
Item Highlight	Easy to Test Paper for Acid, Turn Purple On Neutrality Papers
Item Weight	0.01 kg
Manufacturer	Lineco
Material Type	Paper
Model Number	L533-0023
Number of Items	1
Part Number	L533-0023
Ph Range	6.8 and above
Sterility Rating	6.8 and above
UPC	099295003506 099295530811
Unit Count	1 Count
Warranty Description	1 Year Limited Warranty

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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TrustScore 4.5 | 7,300+ reviews

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Customer service was outstanding when I had questions about the product.

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€ 18.08

Duties & taxes included

In stock

Sold byAmazon NetherlandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Netherlands.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

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