Neutral Litmus pH test paper tests for Neutrality of a solution, or its acidity or alkalinity, does not come with a color chart, test strip will turn red if dipped into an acidic solution (pH <7) or blue if dipped into an alkaline solution (pH >7), Size: 100 test strips
Blade number:22, Disposable Premiere* Blades are made of high carbon steel, individually foil wrapped and sterilized by gamma radiation. 10 per pack; 10 packs per box, For number-4 scalpel.