This 20-slide unit is the standard for manual staining procedures. The removable glass slide rack has an open bottom to facilitate rapid immersion and drainage and eliminate carryover. The rack holds 10 single slides, 19 slides arranged alternately straight across and diagonally, or 20 slides back-to-back of regular size: 3" x 1" (75 x 25mm), 3" x 1-1/2 " (75 x 38mm) and 3" x 2" (75 x 51mm) sizes. Manufactured from soda-lime glass. Wheaton staining dishes are not autoclavable or microwaveable, and are not intended for use at temperatures below 15°C or above 80°C. Approximate inside dimensions: 95mm L x 76mm W x 64mm D.