Features: brand new and high quality Scroll design: light and compact role design for convenient use and wear. pH paper is made of high quality paint music paper to be made with the pH test paper good quality in seconds quick and accurate results to obtain. Easy to use and operate: remove a small test strip, for touch the liquid to be tested, a few seconds later compare the test results with the standard color on the map. pH test paper roll: the pH test strip has the full pH range, measures pH values in the range of 0 to 14, pH color card intervals: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, easy to read. Roll length about 5. for m, 1 roll, 16.4 Foot. Specifications: Material: Paper Diameter: 6cm/2.36 in Length: 5m/ 16.4 in Package Includes: 1 Roll PH Test Paper note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.