Cell Scrapers manufactured by CELLTREAT Scientific Products are designed to gently harvest cells from tissue culture flasks, dishes, or bottles. These cell scrapers are available with three types of blade: Pivoting blade can be adjusted to the desired position, providing access to all corners of the flask or tissue culture vessel Scraper blade is positioned parallel to the handle for windshield wiper like scraping Lifter blade is positioned perpendicular to the handle for use with a raking motion