The product is a pack of 200 pH test strips manufactured by the brand Drenoyic. These universal litmus paper testing strips have a pH range of 0-14, suitable for testing both acidic and alkaline substances. The item model number is PT-H-0-14-200?PH0-14) and the product has an expiration date of September 2026. Originating from China, this product is commonly used in medical, laboratory, and dental settings for measuring pH levels. Same or Next Day SHIPPING!!! 100% Please view all photos. Zoom in on photos for a close-up view. Thank you for your support! I work hard to provide the best customer service possible. If there are any issues with a purchase, PLEASE CONTACT ME directly through messaging. I will always do my absolute best to resolve any issue and be honest and fair in any situation. IF YOU BUY MULTIPLE ITEMS FROM ME - PLEASE utilize the cart feature pay for everything at one time! This saves you time helps me save on fees and keep my pricing low! THANK YOU SO MUCH FOR CHECKING OUT MY STORE, PLEASE COME BACK!