Lineco pH Testing Pen for Paper or Paperboard Products.
$8.32
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Brand: LinecoColor: MultiFeatures: Easy and quick to use Shows within seconds if your paper products are archival Clear or yellow line means bad - Purple line means archival Details: 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.UPC: 99295003506
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