Single use, non-bleeding indicator strips for rapid testing. Gradation of scale: 2.0 - 2.5 - 3.0 - 3.5 - 4.0 - 4.5 - 5.0 - 5.5 - 6.0 - 6.5 - 7.0 - 7.5 - 8.0 - 8.5 - 9.0. Pack Size: 100/box Hazard Class/UN Number: Not Restricted Storage Temp: Room Temperature