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.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Lineco pH Testing Pen for Paper or Paperboard Products. | Easy to Test Paper for Acid, Turn Purple On Neutrality Papers

Lineco pH Testing Pen for Paper or Paperboard Products. | Easy to Test Paper for Acid, Turn Purple On Neutrality Papers

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

₩28409

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

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	#35,893 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #288 in Drawing Pens
Brand Name	Lineco
Customer Reviews	4.4 4.4 out of 5 stars (211)
Included Components	Lineco pH Testing Pen for Paper or Paperboard Products.
Item Weight	0.01 Kilograms
Manufacturer	Lineco
Material Type	Paper
Model Number	L533-0023
Part Number	L533-0023
Sterility Rating	6.8 and above
UPC	099295003506 099295530811
Unit Count	1.0 Count
Warranty Description	1 Year Limited Warranty

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

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

2 months ago

Ali H.

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

1 day ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

₩28409

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews