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 97 of 222
Exponential:
Conc = e
(a • Abs + b)
Polynomial:
Conc = a
0
+ a
1
• Abs + a
2
• Abs
2
+ … + a
n
• Abs
n
where
n
is the number of programmed calibrators.
Cubic Spline
Multilinear
Special Tab (ISE)
Figure 8-19
Select sample type between Serum/Plasma and Urine. Serum/Plasma: 70 µl
Urine (diluted): 140 µl
Remember each sample type has different sample volume parameter. Must be programmed in the
General tab.
8.2.3.1.1 Calculations (ISE)
Since the difference in potentials and the concentration of lithium, sodium, potassium, and chloride
ions in the calibrant solution are known, the computer can calculate the concentration of the ions in the
sample, in accordance with the Nernst equation, rewritten as:
Ex - Es = S log (Cx / Cs) or Cx = Cs x 10^ [ (Ex-Es)/S ]
Where: Ex = ISE potential developed in sample solution
Es = ISE potential developed in the calibrant solution S = Electrode slope calculated during calibration