15ml/50ml tube holder for labroatory purposes
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Update 30.03.19: Ive added a simple rack combination of 4x50ml, 2x50ml, 4x15ml Update 27.03.19: Ive added a 50ml version of my design, print images following I´ve created this tube holder for laboratory tubes of 15ml volumes and 50ml tubes. Feel free to use, remixe and share this tiny little helper.
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