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  4. pH Testing Pen

pH Testing Pen Lineco/University Products

Acidic or alkaline? Now you can distinguish between what paper or board is suitable for conservation with the stroke of a pen. The indicator solution of chlorophenol red will turn a shade of purple on paper with a pH of 6.5 or higher. Any other color would indicate a pH lower than 6.5, thereby acidic and unsuitable for artwork that is meant to last.

  1. pH Testing Pen
Description Sale In Stock Add to Cart
pH Testing Pen LI533-0023 $8.99 In stock

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