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Lineco pH testing pen, white barrel with purple cap, fine tip

Lineco

Lineco pH Testing Pen for Paper and Paperboard

SKU CH-ETBY-7BECD

Quickly verifies whether paper or paperboard is acid-free for archival storage with a simple colour-change mark

  • Verifies archival safety with instant pH colour change
  • Confirms acid-free paper to prevent yellowing and decay
  • Tests paperboard as well as paper for storage quality
  • Pen-tip design limits test mark to a tiny area
  • Clear purple line means safe; yellow or clear means acidic

Archival pH Verification Tool

The Lineco pH Testing Pen provides a rapid method for confirming that paper and paperboard materials meet acid-free archival standards. It is designed for conservators, archivists, and collectors who must verify storage supplies before housing valuable photographs or documents. The pen delivers an immediate visual result to prevent long-term deterioration caused by acidic materials.

Surface Compatibility Check

Confirm the item you intend to test is uncoated paper or standard paperboard, as coatings or surface treatments may alter the indicator reaction. The test requires a small, inconspicuous area where a drawn line will not obscure text or images. Ensure the material is dry and clean so the solvent in the pen can interact properly with the paper fibres.

Instant Colour-Change Indicator

The pen deposits a chlorophenol red solution that shifts colour based on the pH level of the substrate. A purple mark confirms the material is alkaline and safe for preservation use, while a clear or yellow mark signals acidity and unsuitability. This single-use consumable replaces subjective guesswork with a definitive chemical reading for each storage decision.

How it compares

Measured against everything we stock in Archival Storage & Desk Organizers, at today’s prices. Recalculated every night.

Price $18.99
Cheaper than about 80% of the 682 comparable items (median $32.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the Lineco pH Testing Pen ship with any additional accessories or refills, or is the pen the only item included?

The product includes the pen only; no extra accessories, refills or test strips are supplied, so nothing else needs to be bought separately to start testing.

Is the Lineco pH Testing Pen sold in different tip sizes, ink capacities or multi-pack versions that I need to choose between?

The pen is offered as a single model with no alternative tip sizes, ink volumes or multi-pack options listed, so there is no version choice to make.

When I draw a line on paper with this pen, what do the resulting colours tell me about the material's pH and archival safety?

A purple line means the paper is acid-free and safe for long-term preservation, while a clear or yellow line indicates acidic material that will deteriorate over time.

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