IBI's PST-50 are four (4) place pipette holders with an additional place for a mechanical pipette filler. These pipette racks are constructed of durable 1/4" cast acrylic for years of reliable use, and the fluorescent orange color will add color to your lab. The PST-50 units easily attach to the wall of your fume hood, or any other convenient location using a powerful double-sided tape. The PST-50 are orientated such that they can be placed on the right or left side of your fume hood. While looking directly at the PST-50, it has the pipette filler location on the right side. Measures 9-3/4" length by 2-1/2" width by 2-1/2" height.