The clear sides of this tank allow unobstructed visual inspection of TLC plates up to 20cm x 20cm in size. The standard TLC developing tank will accommodate 20cm x 20cm TLC plates and smaller. For smaller plates, the Shorty will accommodate 5cm x 10cm, 10cm x 10cm, or 10cm x 20cm TLC plates turned long side down. Both have a centering baffle to support plates during development and are supplied with lids. Manufactured from 90 expansion soda lime glass conforming to USP Type III requirements.