News — handmade vessels

The following article has been authored by John Heaney.   Variability is a fact of life in any manufacturing process.  That is the reason there are acceptance ranges and tolerances as well as QC departments to measure finished product ensuring that everything is acceptable.  The tools used by any QC department need to be as consistent as possible.  A pair of calipers that gives a slightly different reading each time when measuring an NIST standard block is not particularly valuable.  The same is true of dissolution testers, or more specifically vessels, that have high variability. High variability in the vessel...