Features 1、WITH COLOR CARD: come with pH 1 to 14 measurement range, with color card comparison, easy for you to use 2、UNIVERSAL AND PRACTICAL: Contrast color range, can compare the color obtained during measurement, very convenient 3、SUITABLE SCENARIO: Perfect for school experiments, measuring the pH of any liquid, measuring the pH during product processing 4、FAST AND ACCURATE: Compact and convenient, wait 15‑20 seconds, can test and display the most accurate pH value 5、100PCS IN TOTAL: The package contain a total of 100pcs , enough for you to replace and use, very convenient Specification Item Type: PH Test Strips Weight: 300 g / 10.6 oz(approx.) Product Specification: Approx. 6.5 x 8.5 x 1cm / 2.6 x 3.3 x 0.4in Package List 100 x PH Test Strips