For the RotaRack Large Tube holder, the description states it holds 2 of the 50 ml tubes. Does that mean 2 per colored section? For example, is that 2 in the purple section and 2 in the blue etc., for a total of 8? Or is it just 2 for the entire multi colored block?

Each color block can accommodate 2 50mL tubes. The item is sold as a set of all four colors for a total accommodation of eight 50mL tubes when each color is clicked together.
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