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. by Lineco

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

Product ID: 806453749

Details

UPC
099295003506
ブランド
Lineco
商品の個数
1

⚡Quick, no-fuss testing

📏Precise acidity measurement

🖊️Instant pH detection

₩69493

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.

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

₩69493

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

🖋️ Know your paper’s pH before it’s too late—preserve with confidence!

PROVEN RELIABILITY - Backed by a 4.4-star rating from 192 users, trusted by professionals managing valuable documents.
EFFORTLESS OPERATION - Simple pen design lets you test on the go with zero setup or calibration.
INSTANT P H DETECTION - Draw a line and get immediate acidity results—no waiting, no guesswork.
LIGHTWEIGHT PORTABLE - Weighing just 0.01 kg, it fits perfectly in your toolkit or pocket for quick checks anytime.
PRECISION YOU CAN TRUST - Detects pH levels at 6.8 and above, ensuring your paper or board is archival-safe.

The Lineco pH Testing Pen offers a fast, reliable way to determine the acidity of paper and paperboard products. By simply drawing a small line, users can instantly see if the pH is 6.8 or higher, indicated by a purple color change. Lightweight and easy to use, this pen is a must-have tool for professionals ensuring archival quality and longevity of their documents.

Specifications

ASIN	B000KNJCSS
Amazon 売れ筋ランキング	家電＆カメラ - 591,931位 ( 家電＆カメラの売れ筋ランキングを見る ) 無線・トランシーバー用バッテリーパック - 414位
UPC	099295003506 099295530811
おすすめ度	4.4 5つ星のうち4.4 (196) var
ブランド名	Lineco
メーカー型番	L533-0023
商品の重量	0.01 キログラム
型番	L533-0023

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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