Check the listing for details. pH 1-14 Wide Range Test Strips [Moisture-Proof Vial of 100 Strips]. Condition: New. Listed at 12.51 USD. 100 single-use strips conveniently packed into a moisture-wicking flip-up vial Vivid color chart printed on the bottle enables easy determination of pH with increments of 1 Plastic Strips enable you to test a solution without the risk of touching the solution and eliminating the risk of finger staining No chemicals or reagents needed for accurate readings, just one easy to use strip Proudly made in America with lot numbers and expiration dates printed on each bottle These 100 strips are conveniently packaged in a flip up bottle. They are premium quality strips made in America and have a vivid color chart, enabling the easy determination of pH to one unit. The chart has color block matches at [1.0][2.0][3.0][4.0][5.0][6.0][7.0][8.0][9.0][10.0][11.0][12.0][13.0][14.0]. Instructions: Dip test strip and remove after 1-2 seconds Shake off excess liquid Compare to color chart within 30 seconds https://youtu.be/N6ge92v_K8E