h a l f b a k e r yVeni, vedi, fish velocipede
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If you want to keep your grocery purchases in top shape for longer than usual, you know that touching as little as possible and reducing the air around refrigerated foods is a big help.
I squeeze and press, and inhale and zip, and it's a PITA. If I had a CVP that I could use to remove most of the
air from plastic storage bags of cooked veggies, cheese, and breads — that must be kept refrigerated in my climate — I could eliminate a lot of wasted time and end up with a tight, long-lasting seal.
This would be a low-volume suction pump with a small countertop outlet or flexible tentacle that can be used with bags or storage containers. A foot pedal next to the fridge counter is installed.
A small punch and a tape roll of sticky 1-way valves is included so you can tailor tupperware or other sealed containers for use with the CVP.
Lab Vacuum Trap
https://www.stellar...lAr-ogBFZoSXKqnhO5n
[bs0u0155, Jan 05 2026]
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Every lab I've ever worked in has this baked in. Separate taps for Vacuum, Natural gas and sometimes Nitrogen. It's very useful - particularly for removing liquids from small containers. We have disposable plastic pipette tips attached to tubing leading to a liquid trap/separator <link>. Only we DIY the same arrangement vs spending >$500. The downside of these is that sooner or later, the trap will overflow and nasty scmoo will be sucked into your vacuum pump. This leads to burly blue-collar types coming to your lab and giving a full & frank description of their current opinion of whoever is unfortunate enough to be standing in the wrong room. |
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We also use vacuum seal bags, these come on continuous rolls and are cut-to-size, I use the same thing at home for meats/cheeses etc. Interestingly, we don't use the in-house vacuum for this, instead a standard commercial vacuum sealer, because the whole pull-a-vacuum and maintain it while the heat seal is applied, is more easily managed in a dedicated machine. These are ~$30. So just get one of those. |
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