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Thing about external vacuum sealers is not so much a reservoir to catch liquids, it's the inability to seal the bags when they're wet from the fluids being sucked out. Some of them don't heat the seal strip sufficiently to melt/seal the bag. And the vacuum keeps going, sucking more fluid out
The fellow selling these redesigned the heat strip so that it can seal through moisture. And he charges dearly for this machine - $700.00. He has a few other videos; one in particular where he seals rice or beans with this machine and a bag of same in another machine. Then he puts both in a chamber vac to illustrate that his machine achieves a better vacuum and seal. Or something like that.