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
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
Sturdy and thick walled plastic test tube with cap is made from soda bottle material, ensures a durable test tube with a tightly screwed cap, to maximize lab use and minimize leaks. Total length is 126mm, inner diameter is 22mm, and outer diameter is 24mm.