Sievers TOC 820 - Page 180

Ionics Instruments 2004 Page 9-22 DLM 30007-08 Rev. A
Calibration Worksheet
Name of Analyst Date
Company Name
Analyzer Serial Number
Firmware Version
TC Zero Offset (only necessary for on-line analysis of water < 50 ppb)
Last Five TOC Measurements Average
Average within the range of –0.1<TOC<0.1?
If Yes, proceed to TC Calibration Procedure
If No, complete TC Zero Offset Procedure
Initial Offset
Initial Offset – Average TOC = New Offset
Verification TOC value
TC Calibration Constant
Blank TC (Average)
Certified TOC Concentration of standard
Adjusted Standard Concentration
+ =
Measured TC Reading (Average)
To Pass, measured TC value for the TC/TOC Standard must be within ±3% of the adjusted
concentration of the standard and the CV value must be less than 3%.
F Pass F Fail
Standard Deviation
Relative Standard Deviation (CV)
a
set in
Measurements
of
N
umber
Average
Result
of Sum
=
=
=
∑
=
n
ξ
x
1
2
)(
Deviation Standard
−
∑
−
=
n
xx
100 x
Average
Deviation Standard
(RSD)Deviation Standard Relative =