Lineco pH Testing Pen
SKU:
L533-0023
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The quick and easy way to determine if paper or paperboard is acidic or safe for treasured collections.
Simply draw a line on the material to be tested. A clear or yellow line indicates material which is unsuitable, a purple line reveals the paper is safe for preservation purposes.
Simply draw a line on the material to be tested. A clear or yellow line indicates material which is unsuitable, a purple line reveals the paper is safe for preservation purposes.