Download Analysis of Hazardous Substances in Air by Edited by Antonius Kettrup PDF


By Edited by Antonius Kettrup

ISBN-10: 3527270531

ISBN-13: 9783527270538

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6 Reproducibility and comparability Also associated with the random error of analytical procedures are the two parameters reproducibility and comparability. The definitions from ISO 5725 are given below [3]. Reproducibility is the value r below which one can expect with a prescribed probability (usually 95 %) to find the absolute difference between two individual test results (analytical values) which were obtained with the same procedure with identical test material and the same conditions (employee, apparatus, laboratory, short time period).

GK-26-35-03-GO) Sampling pump (e. g. 2 Chemicals Azinphos-methyl (e. g. 3 Solutions Stock solution: To prepare the stock solution, 25 mg azinphos-methyl is weighed exactly into a 25 mL volumetric flask. Then the flask is filled to the mark with acetonitrile (1 g/L). Elution solution: To prepare the elution solution 1 mL of the stock solution is pipetted into a 10 mL volumetric flask containing approximately 5 mL acetonitrile. Then the flask is filled to the mark with acetonitrile (100 mg/L). 1± 10 mg/L of azinphos-methyl are prepared by diluting with acetonitrile.

The general principles are described below. Details can be found in the OECD document ªThe application of the principles of GLP to computerised systemsº [9]. Computerised systems used for monitoring should be constructed for the purpose, have sufficient capacity and be suitable for the use intended. Suitable procedures for testing and servicing these systems should be available, and the systems should be developed, validated and run in accordance with defined principles (e. g. GLP). Demonstration that a computerised system is suitable for the intended use is described as computer validation.

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