For many years, the typical TPP yellow colour has stood for and guaranteed a stable, slip-free stacking of several flasks with visually attractive marking areas. The 75 cm² and 300 cm² types feature a bilateral marking area thus offering not only left-handed users an advantage. Complete access of TPP pipettes and scrapers into the corners is another characteristic of our tissue culture flasks. The growth area with its uniform surface treatment together with its crystal clear transparency completes the high quality of this product.