Accommodates 75 each 20-25 mm OD tubes. When tubes are 150 mm or shorter, Holder may be stacked with either another 4546300 or Holder 4546200 (sold separately). Washers using stacked Holders are not compatible with an upper rack.
Test Tube Holders are add-on accessories to the Lower Test Tube Spindle Rack. The Holders keep tubes upright. Constructed of Type 304 stainless steel. For pre-2020 Glassware Washers.
