Vocational Education Training in Environmental Health Sciences: Collecting Stream Samples for Water Quality, Module 16

摘要

In this instructional module, students learn to collect stream samples for specific laboratory analyses. Training Prerequisites: Before beginning this module, students must know how to work safely in a laboratory; adjust the pH of a solution to a given value, using an acid or a base; use a graduated Mohr pipet to deliver amounts of liquid accurate to 0.01 ml; read a Centigrade thermometer accurate to the nearest degree; and sterilize equipment using dry heat or an autoclave. Objectives. Upon completion of this module, students will be able to perform the following function: Use a job aid to identify all the equipment and reagents needed to collect stream samples for water quality analyses, clean and prepare sampling bottles needed for collecting stream samples for water quality analyses, and select the most suitable location for collecting water samples at a predesignated sampling site at a stream and take a grab sample.