High Technology, Inc.
109 Production Road,
Walpole MA 02081 USA
Document Number
OM-E-FC-360-30
Revision Level
Rev. 3
Prepared by
J.S. Bolio
Approved by
S. Titov
Effective Date
8/15/2016
Operator’s Manual: HTI BioChem FC-360
HIGH TECHNOLOGY, INC. PROPRIETARY AND CONFIDENTIAL
Page 161 of 222
Bichromatic Absorbance
The export of the results can be done automatically. Contact Technical Support for more information.
Determination of precision of an analytic method
For the validation of an analytic method, one of the parameters that should be stipulated is the CV% that
estimates the imprecision of the methods for a given concentration.
This parameter can be measured easily using the program. Go to
Maintenance
Validations
Diluter
precision
Select the method
indicate the position of the tube to use
indicate the number of
repetitions (10 minimum, 20 optimum)
OK.
It is recommended to choose the imprecision of the method for various concentrations levels, or at least,
for the medical decision level for each analyte
Caution: Do not process other samples while this procedure is being done.
Caution: Use sample tubes with a total volume greater than 800 µl for the precision tests.
Direct reading of the solution absorbance
From the
Maintenance
menu
Communications
Commands console
it is possible to read the
solution absorbance without the intervention of the instrument’s hydraulic and the dispensing systems.
In order to do this, the number of the cuvette should be recognized. Cuvette number 1 is located in cuvette
strip aligned with the acrylic cuvettes tray positioning guide, and it’s indicated with a label. Following the
direction of the arrow on the label (clockwise) you can identify the correlative numeration for all the other
cuvettes.
The procedure described below is used as an example for the reading of the instrumental control
solutions, or for adapting analytic techniques and monitoring reactions.
To make an absorbance reading, it is recommended to use externally washed cuvettes calibrated with
washing solution.
These are the steps to follow:
1) Start up the instrument
Maintenance
Instrument
Initialize
2) Using an automatic pipette, dispense 250 to 500 µl of solution to be read, avoiding the formation
of bubbles.
3) Place the lid on the cuvettes tray
4) Go to
Maintenance
Communications
Commands console
and in the terminal window
write the following command (exactly as it’s written):
disableVars A1 R