[500Pcs Paper Strips]: There are 500pcs paper strips in the package, each is 7.5x2.8cm(2.95x1.1inch), sufficient quantity to meet your various needs. [Paper Material]: This experiment paper made of premium paper material, light, flat surface, suitable for experiment and science. [Easy to Use]: This filter paper strip provides fast filtration and clear separation of pigments for easy interpretation of readings. It can work as an abosorbing paper strip or a cleaning sheet. [Wide Application]: Experiments filter paper can be used for various experiments at home, effectively exert the absorption function, enjoy the fun. [Cleanroom Wipes]: The cleanroom wipes are designed to meet cleanroom standards and are appropriate for cleaning your experimental lenses.