A. Nutrient Sampling: Refer to the Field Sheet to see which bottles need to be sampled at which depths and the 'Southern Lakes LTER Bottle Codes’ for preservation, filtering, and coding information.
1. Purge the lines: Whenever sampling from a new depth, the peristaltic pump tubing must be purged of the water from the previous depth. After reaching the proper sampling depth, use a graduated cylinder to measure the volume of water purged before beginning the sampling. Purge at least 1200 mL of water for each 20 meters of tu