This is a scientific mount for cleaning substrates for fabrication of light emitting diodes. The Samples should undergo baths of Soap, Acetone and IPA and blowdried with Nitrogen. This sample holder we fabricated can hold more than 15 substrate and they can all cleaning in the same run.
This is the general thread for discussing the project; the thread is also visible on its page at https://www.fablabs.io/projects/sample-substrate-mount-for-cleanning