Check the listing for details. Methyl Violet Test Strips, Vial/100 Testing Papers - Narrow Range pH 0.2 to 2.0. Condition: New. Listed at 9.49 USD. Methyl Violet Test Strips, Vial/100 Testing Papers - Narrow Range pH 0.2 to 2.0 100 PAPERS || 100 Methyl Violate Test Papers in a plastic vialAPPLICATIONS || Used to test strong acid solutions & detect nitrogen oxides in vaporsNARROW RANGE || Calibrated to accurately measure the pH of a solution within a narrow range of pH 0.2 to 2.0COLOR CHANGE || Methyl Violet will transition from violet (pH 2.0) to yellow (pH 0.2)SIZE || Each strip measures approximately 48mm long and 6mm wide Methyl Violet Test Paper is used to test strong acid solutions & detect nitrogen oxides in vapors. If features a narrow pH range, transitioning from violet (pH 2.0) to yellow (pH 0.2) in strong acids. Each strip measures 1.875"L x 0.25"W (48mm x 6mm). Vial of 100 papers. Product Details Brand Eisco Product Type MPN METVIO Check out my other items.