Final Report Report No.: 1 Program No.: WAT-CH-0001 Program ...

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Report No.: 1 Sulphate Method Number of results % of total Median Sat. (%) Ion Chromatography 6 22.2% 271.40 100% Turbidimetry 17 63.0% 266.40 65% other 4 14.8% 266.50 75% Fluoride Method Number of results % of total Median Sat. (%) Ion Chromatography 6 25.0% 0.24 --- Spectrophotometry 14 58.3% 0.48 --- other 4 16.7% 0.38 --- Comments: in case of using ion chromatography method, the analysis should be done by using a suitable effluent and removal of interferences. Conductivity Method Number of results % of total Median Sat. (%) Conductivity Meter 24 88.9% 1399.50 88% other 3 11.1% 1408.00 67% Total Dissolved Solids Method Number of results % of total Median Sat. (%) Drying @ 180°C 12 46.2% 945.50 100% Calculation 4 15.4% 903.50 100% other 10 38.5% 777.00 90% 7-3- Overall performance Samples have been collected and prepared according to standard methods for the examination of water and wastewater. Assigned values for each parameter have been determined form the participants results in this program and statistical calculations. In case of fluoride, due to the variations in the results the evaluation of participants performance is not possible. Since the analysis of fluoride is a very sensitive procedure and diferrent parameters such as sample and standards temperature can affect the measurement process so it is expected to improve the test methods results by carefully take the above mentioned cautions into consideration. Page 12 of 57
Report No.: 1 8- References 1- ISO/IEC 17025: 2005, general requirements for the competence of testing and calibration laboratories. 2- ISO/IEC 17043: 2010, Conformity assessment — General requirements for proficiency testing 3- ISO 13528: 2005, Statistical methods for use in proficiency testing by interlaboratory comparisons 4- PR-14- rev. 00, PQP Performance evaluation Procedure 5- PR-15- rev. 00, PQP Homogeneity and stability Procedure Page 13 of 57
Page 1 and 2: Report No.: 1 Final Report Program
Page 3 and 4: Report No.: 1 Table of Contents 1.
Page 5 and 6: Report No.: 1 1. Introduction This
Page 7 and 8: Report No.: 1 participants i.e. lab
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Page 11: Report No.: 1 Total hardness Method
Page 15 and 16: Frequency Report No.: 1 Data Statis
Page 17 and 18: Report No.: 1 Magnesium Lab. Code M
Page 19 and 20: Z-score Report No.: 1 3.00 2.00 1.0
Page 23 and 24: Report No.: 1 Alkalinity Lab. Code
Page 29 and 30: Report No.: 1 Potassium Lab. Code M
Page 35 and 36: Report No.: 1 Sulphate Lab. Code Me
Page 39 and 40: Report No.: 1 Data Statistics Numbe
Page 43 and 44: Report No.: 1 Total Dissolved Solid
Page 47 and 48: Report No.: 1 Total Hardness Sample
Page 49 and 50: Report No.: 1 Potassium Sample Port
Page 51 and 52: Report No.: 1 Fluoride Sample Porti
Page 53 and 54: Report No.: 1 Conductivity Sample P
Page 55 and 56: Report No.: 1 Appendix C- Documents
Page 57: Report No.: 1 C-2- Results Sheet Ph

Final Report Report No.: 1 Program No.: WAT-CH-0001 Program ...

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