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Lineco pH Testing Pen for Paper or Paperboard Products.
Lineco pH Testing Pen for Paper or Paperboard Products.
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An easy, convenient way to distinguish between safe alkaline paper and board, and unsafe acidic paper and board. The chlorophenol red indicator solution turns a definite purple color on any paper with a pH of 6.5 or higher.

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Product Review

An easy, convenient way to distinguish between safe alkaline paper and board, and unsafe acidic paper and board. The chlorophenol red indicator solution turns a definite purple color on any paper with a pH of 6.5 or higher.

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