100% brand new and high quality  Characteristics: Professional and specially designed for ketone testing, made for quanlitative and semi-quantitative urine analysis. For the medical organization that tests and analyzes the urine specimen. Please read the included user manual carefully before testing for correct operations and accurate results. One set includes 100 pieces of strips and please store it in dry condition if not used yet.   Instructions: 1. remove a strip. dip the pad into the urine cup or single stream of urine. 2. Wait exactly 40 seconds and compared to the color chart on the bag.   Specification: Type: Ketone Tester Color: like the pictures shown Size: One Size Package: 130x86x15mm(5.12x3.39x0.59in) Quantity: 1 bag (100 pcs)   note: 1.1 centimeters = 0.39 inch. 2. Allow 0-1cm error due to manual measurement. Make sure you don't mind before making an offer. 3. Due to the difference between monitors, the image may not reflect the actual color of the item. Thanks! 4. This product has a shelf life of two years and we will ship it according to the latest production date.   The package includes: 10/5/4/3/2/1 bags x strips (100 pieces)