General purpose pH papers in efficient 15 ft. rolls
- Convenient dispenser allows you to select the right amount of pH paper for each application
- Easy-to-use—Dip paper in solution to be tested and match to color chart immediately
- Highly accurate and well suited for most applications
- Each SKU is packed in box of five clear plastic dispensers
- Cat. No. 13-640-507 is a pH paper testing set that includes shrink wrapped pack of seven dispensers (one of each SKU)