["Features:\r\nComes in a nice plastic box that's easy to cary around\r\nAppropriate for testing alkaline or acid level of any liquid\r\nUniversal pH paper is also great for Science Education, great product to have in every lab and at home to measure and inspect water quality, urine, saliva, soil, alkaline diet, aquariums and more\r\nPH wide range 4.5-9.0, 100 strips per pack With distinct color PH scale for result comparisons\r\nThe test strip color changes must be matched with the pH scale color chart within about 15 seconds\r\n\r\nUsage: \r\ntest liquid ready, take out a test paper, the 2 color blocks all immersed in the liquid, after 1 seconds to take out, in contrast to the color of the color reading value in 30 seconds\r\n\r\nWhen PH is less than 7, the liquid is acidic\r\nWhen PH is equal to 7, the liquid is neutral\r\nWhen PH is greater than 7, the liquid is alkaline\r\nTest paper is PH=6, when the liquid PH is 6, the test paper is completely non color\r\n\r\nNote:\r\nCan not indicate the Acid or alkali solution when its density was lower than 0.01%.\r\nKeep dry for the rest paper\r\n\r\nPlastic Box Size: 6.7x8.7x1.1cm\r\nQuantity: 1 Set/100 Strips\r\nNote:\r\nPlease allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage Contents: \r\n1 Set x PH Test Paper\r\n1 x Plastic Box"]