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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 139 of 222
Precision test P150 and P250
The precision study is used to determine the repeatability of the measured parameters under unchanged
conditions. You will test P150 and P250 as a sample, using DI water for the Reagent for these precision
tests
Using the Precision Test Dye solution program the methods referring to section 12.7.6.1 and 12.7.6.2.
For the P150 and P250 Precision Tests, use DI water as the reagent and the P150 and P250 dyes as
the samples.
P150 solution active ingredients and concentration:
Potassium Dichoramte
30mM
Sulfuric Acid
0.01N
P250 solution active ingredients and concentration:
Potassium Dichoramte
88mM
Sulfuric Acid
0.01N
Run each solution (P150 and P250) 10 times
Create a spreadsheet for the results of the P150 and P250 tests and include calculations for the Mean,
Standard Deviation and CV%
The following formulas are used to calculate the Mean, Standard Deviation and CV%:
Mean = Sum of 10 results
10