Red Litmus Test Paper, foolproof pH test to determine base, Test strip will turn blue if dipped into an alkaline solution (pH >7), Pocket-sized, lightweight vial, No color chart necessary, solution must be water-based
Sanford Sharpie Permanent Fine Point Markers, Original Sharpie pen-style permanent marker marks on most hard-to-mark surfaces. Markings are permanent on most surfaces. Alcohol-based ink is quick-drying and certified AP nontoxic.
Dixon Phano Nontoxic China Markers, Nontoxic, Paper Wrapped, Blue, Ideal for marking on glass, plastic, film, paper, metal, rubber, almost any surface. Bright colors deliver vivid marks. Marks easily wipe away clean from any smooth surface.
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