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Plugged-up manifold ports for a microplate washer. Short skinny tubes are dispensers, tall fat ones are vacuum. “Fat” is about 1.5mm. This is a microplate. Sometimes we use 200/day and each gets 4 to 6 rounds of squirting stuff in and washing.
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If it isn’t rigorously maintained, protein builds up, plugs form, the manifold has to come off for manual cleaning. Warm enzymatic detergent, then shoving a tiny wire into each hole.
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Alignment is a problem for 96 500 micron thick 3 cm long wires. A dedicated single wire-poking 5-axis robot with a camera could make short work of it.
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