Test Tube Rack

The 11mm model has 4 positions for specimen vessels: 4 spaces 32 mm in diameter for larger (50mL) test tubes, 14 spaces 17.7mm in diameter for moderate sized (15mL) test tubes, 50 spots 11mm in diameter for standard 1.5mL cap-tubes, and 85 spaces 8mm in diameter for small cap-tubes.

The 11.5mm model only has 3 positions for specimen vessels: 4 spaces 31mm in diameter for large (50mL) test tubes, 12 spaces 17.7mm in diameter for moderate sized (15mL) test tubes, and 50 spaces 11.5mm in diameter for standard sized 1.5mL cap-tubes.