3in Dimensions: 12

Llenar con el líquido de ensayo

el probador de corte / rayado se usa para medir la susceptibilidad de las superficies del material a estropear

Integrated drying time modes from 4 minutes to 4 hours (optional drying time accessory 2141 required)

Lápices de pH Insta-Chek Copas 3in Dimensions: 12DESCRIPTION Full range: P 12M Insta Chek 0 13 pH mechanical pencil (each pack contains 3 pencils and 2 color charts). Measure the pH of any surface. Detects acidic or alkaline residues in 15 seconds. Fits in your pocket, use it anywhere. The Insta Chek 0 13 pH Mechanical Pencil has 0 13 pH readings with fourteen bright, easy to read color changes. It will measure the pH of the surface of any solid to the nearest pH value. This mechanical pH pencil has