pH Test Pen

pH Test Pen
An easy, convenient method for distinguishing between safe alkaline paper and board, and unsafe acidic paper and board. Easy to use, simply draw a line. The chlorophenol red indicator solution will turn a purple color on any paper with a safe pH of 6-8 or higher. Any other color would indicate a material most unsuitable for conservation purposes.
SKU LIN L533-0023
Weight 0.06 lbs
Price: $7.59
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