This is a sample collection device which fits 8 strip PCR tubes. 1.5 mm (OD) tubing can be attached to the lid portion of the container and sealed with silicon tub sealant. Vacuum can be applied via manifold or individual syringes.
From "Macro-to-micro interfacing to microfluidic channels using 3D-printed templates: application to time-resolved secretion sampling of endocrine tissue" Analyst, 2016
Lid and tubing must be sealed with epoxy or silicon tub sealant in order to maintain air tight seal. Silicon tub sealant can also be used as 'o-ring' in the indent where tubes will directly interface with the lid. The sealant will maintain airtight seal and is spongy enough to seal against the PCR tubes.