Re: Spectrophotometer accuracy
Re: Spectrophotometer accuracy
- Subject: Re: Spectrophotometer accuracy
- From: Ken Fleisher <email@hidden>
- Date: Thu, 25 Aug 2005 19:22:02 -0400
On Aug 25, 2005, at 4:34 PM, email@hidden wrote:
Both of them wanted to have an absolute standard, and both used the
BCRA route. After spending thousands of dollars in material and
services (one bought new, the other used, one of them spent near or
over 10K in the project), they still cannot reach that goal.
It is, however, possible to vastly improve inter-instrument accuracy
without making "absolute" accuracy a goal. It's true that the geometry
is important, however, if the goal is to get your two instruments
produce the same values, you can designate one of them as the reference
and then transfer its scale to the other, thus making them behave more
similar to each other. Achieving "absolute" measurements, traceable to
NIST, is also doable, but not necessarily required.
Ken
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