Test Tube Holder (single dose)
Description
Test tube rack/stand/holder for 50ml Standard Laboratory Conical Centrifuge Tubes. https://www.amazon.co.uk/gp/product/B07S7CJCDW/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 I used them to hold single coffee doses in freezer as they are cheap and can hold up to 18 - 20g of coffee beans :)
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