Features： *0-14 PH TEST PAPER (BOXED) Easy to carry Safe and reliableAccurate measurement *100 COPIES AVAILABLEIN BOXAlways have a box in your home, take measurements anywhere.anytime, and master the pH. *HOW TO USE AND INSTRUCTIONS： 1.A small amount of reagent should beapplied to the test paper with a glassrod or a dropper, and then the colorafter the change is stabilized, andcompared with the standard colorchart, the nature of the solutionis judged. 2.Do not insert the test paper directly intothe reagent in the container.this willcontaminate the reagents and will alsoaffect the accuracy of the results. Specifications： PH Value in Life： Between pH 1 and 2 is toilet wash. Between pH 2 and 3 are lemons and vinegar. PH 3 is. PH 3 to 4 is orange PH 4 to 5 is soy sauce (pH 7.0 to 8.5 is good forthe human body) PH 6 is watermelon, carrot Between pH 6 and 7 is milk. Between pH 7 and 8 is egg white. Between pH 8 and 9 is toothpaste. PH 10 is soap PH 11 is plant ash water PH 12 to 13 is the kitchen detergent Package Contents: 100 Strips test paper Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. Our products are made of environmentally friendly materials, safe and non-toxic, and will not cause harm to the human body. Please read the product manual carefully before purchasing, and use it correctly according to the operation steps. If you encounter any difficulties or problems during use, please contact us in time, we will solve them for you as soon as possible. Your support is the driving force for us to move forward, and we look forward to sharing your experience and experiences with us. For the quality problems or defects of the product itself, we will provide unconditional return or repair service.