Test tube rack
Download from MakerBot's Thingiverse for Test tube rack
Centrifuge Tube Holder from MakerBot's Thingiverse
Conductivity Tester from MakerBot's Thingiverse
Olympus microscope SZ61TR Eyepiece adapter for iPhone-5 from MakerBot's Thingiverse
USB Microscope Stand from MakerBot's Thingiverse