Filchem pH Papers: A series of over 20 different narrow range pH papers, each range covering approximately 1.5 pH units of the complete scale. Permits reading within 0.05 pH. Packaged 200 identical range test strips per box. Also available, UNIVERSAL 3 COLOR PH PAPER TRIDICATOR® ROLL - FC111 Tricolor indicator paper (pH range 1 to 11) creates a 3-dimensional effect with the vivid contrast of the colors providing a sharp visual comparison for finer definition and permits a reading within 0.25 pH. Tridicator® is packaged in 20 foot rolls in a specially designed plastic self-dispenser and provides 33% more paper than ordinary rolls.

 Part # FC1214