Here is a conversion factors, someone might need! i had to refresh my memory on 500k microns, which gets mention here sometimes. 500 torr = 500k microns = 19.69 in/hg.

CONVERSION FACTORS FOR VACUUM

1 micron (u) Hg = 0.001 mm Hg = 10-3 mm Hg

1 newton/m2 (... Login to read more.