High Technology, Inc.
109 Production Road,
Walpole MA USA 02081
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
Page 88 of 217
HIGH TECHNOLOGY, INC. PROPRIETARY AND CONFIDENTIAL
Linearity:
This is the linear correlation coefficient of the absorbance readings according to the time of
the reaction. If the coefficient is less than that programmed, the instrument will dilute the sample. It is
recommended to enter a value between 0.8 and 0.95
Repetition:
Enter a minimum concentration value, below which the Auto analyzer will repeat the test
under identical sample and reagent(s) conditions, and will show that this result has been repeated.
Linear Limit:
Enter a maximum concentration value. The reagent linear limit value given by the
manufacturer is one option. Another option is the higher laboratory limit for the test. However, if this
value is exceeded, the instrument will dilute the sample to obtain a value within the linear limit.
The instrument will run the dilution using half the sample volume programmed in the General Tab. The
software will show that the sample has been re-diluted. The result will be calculated using a volume
factor for compensation. If the new result is still not within the programmed values, the sample will be
diluted again until the minimum volume indicated in the
Advanced
tab is used.
Example for method configuration
Figure 8-12
BDT: Bubble dispersion time =
20” TSR: Time to start readings = 100” TER: Time to end readings =
320” Measurements= 3
8.1.4.3.2 Calculations
Monochromatic Reading
A
1
= 1
st
Absorbance reading of the Sample
A
2
= 2
nd
Absorbance reading of the Sample
A
N
= n
th
Absorbance reading of the Sample
ΔA/min = change per minute of the sample absorbance calculated by linear regression over “n”
Absorbance readings
F =
Factor programmed or obtained by the method calibration C = Concentration