To change TPP Scraper blade angle of the TPP cell scraper require slight pressure on the handle using the forefinger Thus pushing the handle downward towards the floor of the container Slight rotation of the handle will then cause the blade to twist to the desired direction The advantages of the cell scrapers Free rotating blade Total access to all corners of the flask Different blade widths Small raised knobs on the handle Lint-free blister packaging user friendly TPP dispenser case The TPP cell spatula is mainly used with TPP tissue culture flasks with re-closable lid or peel off foil and with the large TPP tissue culture dish The advantages are of TPP Spatula are Special formed blade with sharp edges Small raised knobs on the handle Sharp edges ensures fine minicing in sterile conditions Lint-free blister packaging User friendly TPP dispenser case