Use Cell Scraper Lifter Blade for harvesting cells or cell lysates. This sterile RNase/DNase-free and non-pyrogenic blade comes individually wrapped and is best used with Tissue Culture-Treated Dishes (Catalog 38046) and Cell Culture Flasks (Catalog 200-0500/200-0501/38073). It has a sturdy acrylonitrile butadiene styrene (ABS) handle and a flexible thermoplastic elastomer (TPE) blade that prevents damaging cells or scratching surfaces. The lifter blade is positioned perpendicular to the handle and scrapes with a raking motion.