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We too have been experiencing similar problems. Original comparisons (flame photometer) seemed OK but almost immediately it became unusable due to extreme under-recovery & with EQA returns up to 50% low. We've changed Cal-Pak reagent lots (currently 1J030) & electrode, all to no effect. Bayer seem uncertain about the cause & have just sent us a new electrode & Cal-Pak reagent lot (2A016) to try. Will let you know whether this works. Otherwise, it seems a great analyser.
Frank Murphy
Hillingdon Hospital
¯--Original Message ¯-
>>> Jeff Slater <[log in to unmask]> 05/09/02 05:58pm >>>
We have a Bayer (Chiron) Lithium analyser model 654. The instrument is
unstable and there are constant problems with precision particularly at
the low-end which Bayer do not seem to be trying to sort apart from
widening acceptance limits on the QC ?.
Has any one else experienced problems ?
--
Jeff Slater
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<DIV><FONT size=1>We too have been experiencing similar problems.
Original comparisons (flame photometer) seemed OK but almost
immediately it became unusable due to extreme under-recovery & with EQA
returns up to 50% low. We've changed Cal-Pak reagent lots (currently 1J030)
& electrode, all to no effect. Bayer seem uncertain about the cause
& have just sent us a new electrode & Cal-Pak reagent lot
(2A016) to try. Will let you know whether this works. Otherwise, it seems a
great analyser.</FONT></DIV>
<DIV><FONT size=1></FONT> </DIV>
<DIV><FONT size=1>Frank Murphy</FONT></DIV>
<DIV><FONT size=1>Hillingdon
Hospital </FONT><BR><BR>—--Original Message —-</DIV>
<DIV>>>> Jeff Slater <[log in to unmask]> 05/09/02
05:58pm >>><BR>We have a Bayer (Chiron) Lithium analyser model 654. The
instrument is<BR>unstable and there are constant problems with precision
particularly at<BR>the low-end which Bayer do not seem to be trying to sort
apart from<BR>widening acceptance limits on the QC ?.<BR>Has any one else
experienced problems ?<BR>--<BR>Jeff Slater<BR><BR></DIV></FONT></BODY></HTML>
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