Litmus Paper – Red and Blue Vials (100 strips each)

Red Litmus Paper x 100 strips
Blue Litmus Paper x 100 strips
Resealable vials Red and Blue Litmus Ph strips 100 strips of each in resealable vials Testing instructions * Blue Litmus will turn red when tested with an acid. * Red Litmus will turn blue when tested with a base. Neutral reaction on Blue means the test substance is a base. Neutral reaction on Red means the test substance is an acid. 1. P More »