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Advanced
™
Osmometer Model 3250 User’s Guide
• Instrument accuracy is determined by comparing your results on
precisely-known standards and/or controls with their specified
values. The instrument accuracy is adjustable; if it is unsatisfactory,
it should be corrected by recalibrating, as instructed in Chapter 4.
However, it has been shown that frequent unnecessary recalibration
will introduce inaccuracy. The calibration of a freezing point
osmometer in good condition and properly operated will not shift
or drift.
• Follow quality control requirements of your associations and
regulatory bodies.
• Advanced Instruments recommends the following usage schedule
of quality control materials to ensure proper instrument operation,
result reporting, and Good Laboratory Practice:
– Clinitrol
™
290 Reference Solution should be used daily to ensure
that the instrument is performing properly and has not shifted.
– If your laboratory is required to run matrix-based control
solutions, Protinol
™
Serum Protein Control and Renol
™
Urine
Control should be run daily to monitor precision and create an
audit trail that can be tied to patient results.
– Linearity should be verified using the five-level linearity set as
required by your laboratory.
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