• Inner surface is treated to produce a negatively charged, hydrophilic surface for consistent cell attachment. Growth surfaces are flat and free from striation to maximize usable growth area and transparency. • Uniformly molded plastic bottoms provide a distortion free surface. • Supplied lids contain molded spacers to provide consistent gas exchange and stacking rings that add stability for handling tall stacks of dishes. • Dishes are sterile and packaged in easy-to-open bags with a re-sealable zip closure. RNase-free, DNase-free, DNA-free and non-pyrogenic. • Manufactured in accordance with ISO 9001:2000 quality management systems in a class 100,000 cleanroom. • CELLTREAT™ products include a comprehensive quality certificate with every case of product. The certificate includes the part number, lot number, sterility assurance level and dosage, endotoxin/pyrogen-free assurance, non-cytotoxicity assurance and RNase/DNase-free assurance. • Sterility Assurance Level = 0.000001.