I designed a 3D test tube rack for a science teacher (adapted to tubes of 0.5ml, 1.5ml, 10ml, 15ml and 50ml). Since he's got a 3-D printer, he can print as many as he wants for his lab. The file is available in open-source and for free. You can reqest it by following the link below.

Do other you need small equipment to equip your lab ? Don't hesitate to contact us, we will be happy to help :) 
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