DIN ISO 5667-14:2013-09

This part of ISO 5667 provides guidance on the selection and use of various quality assurance techniques relating to the manual sampling of surface, potable, waste, marine and ground waters. The general principles outlined in this part of ISO 5667 in some circumstances may be applicable to sludge and sediment sampling. Quality control procedures are required for the collection of environmental water samples for the following reasons: a) to monitor the effectiveness of sampling methodology; b) to demonstrate that the various stages of the sample collection process are adequately controlled and suited to the intended purpose, including adequate control over sources of error such as sample contamination, loss of determinand and sample instability. To achieve this quality control procedures should provide a means of detecting sampling error and hence a means of rejecting invalid or misleading data resulting from the sampling process; c) to quantify and control the sources of error which arise in sampling. Quantification gives a guide to the significance that sampling plays in the overall accuracy of data; d) to provide information on suitably abbreviated quality assurance procedures that may be used for rapid sampling operations such as pollution incidents or groundwater investigations. This document has been prepared by Technical Committee ISO/TC 147 "Water quality", the secretariat of which is held by DIN (Germany). The responsible German committee is Working Group NA 119-01-03-01-01 AK "Probenahme" ("Sampling") of Working Committee NA 119-01-03 AK "Wasseruntersuchung" ("Water analysis") of the Water Practice Standards Committee (NAW) at DIN. The national revision of this project is funded by the Länderfinanzierungsprogramm "Wasser, Boden und Abfall" (federal funding programme "water, soil an waste").