Sampling and Equipment Marcia Kyle ASU Biology

Sampling n “The result of any testing method can be no better than the sample on which it is performed” n The object of sampling is to collect a sample that is both transportable, and remains representative.

Planning n Literature search n Collection containers u Glass or plastic u light or dark u Size u Collection lids

Preparation for collection n Collection bottles F Acid F sterilized n Rinse blank n Trip blank

Collection n Pre-rinsing before filling n Clear labels n Field notes n preserving n transporting

Is the sample representative n Integrated samples vs grab n Effects of sampling gear on sample n Effects of transport and storage on sample

Equipment n Training n Chemical grades n Glassware maintenance n Maintenance of sampling gear

Processing the sample n Filtering n Labeling n Drying

Repeatability of sampling n Time effects n Sampling effects