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NEUTRAL 7 PEN

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Application: The Neutral 7 is a marker that identifies the acidity of paper. When a high acid content is present, a bright-yellow to yellow-orange will appear. Lime-green to dark green appears when tested paper is acid free. A blue to dark blue indicates an alkaline pH above 9. After application to paper; wait a few seconds to give the ink and paper time to react. Test on the back side, concealed area or a test strip of paper.

Features: Acid-Free/non-toxic, water based ink will stay bright-blue when paper is basic, while bright-yellow orange tells you a high acid level is present. The ideal color would consist of anything with a greenish tint. Pens have a color coded barrel for quick and easy identification of the reading.

2(acidic)----------------7(neutral)---------------10(alkaline)

Item	Neutral 7 Acid Identifier	(A) 1+	Quantity
99-1977	Neutral 7 Pen	$5.95

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