What micron rating of vaccum do you begin your runs at?

I am wondering what micron rating of a vac I should expect at 1500ft ish appears to be a 28.5 with 170-340 micron depending on the material and number of nitrogen purges. Just looking to see if I’m within community averages.

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I push go at 1200. So as not to suck too many terps.

At least on decent material.

500um on molsieve or magic dirt.

50 when trying to figure out if vessel is tight and free of solvents or water.

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