Protocol eTraining
Update: The eTraining modules are now web-based and are available for all to access.
Hydrosphere
Learn how to select a Hydrosphere study site and be prepared for taking water measurements using different GLOBE Hydrosphere Investigation protocols.
Learn how to use an alkalinity kit to measure the alkalinity of a water sample from your Hydrosphere study site. The exact procedure depends on the instructions in the alkalinity kit used.
Learn how to use a dissolved oxygen kit or probe to measure the amount of dissolved oxygen in a water sample collected at your Hydrosphere study site.
Learn how to measure electrical conductivity using an electrical conductivity meter and estimate the total dissolved solids from electrical conductivity measurements at your Hydrosphere study site.
Learn how to use a nitrate kit to measure the nitrate-nitrogen in a water sample at your Hydrosphere study site.
Learn how to determine the salinity of a water sample by using a hydrometer to measure the specific gravity of the water sample and a thermometer to measure the water's temperature.
Learn how to use a pH meter or pH paper to measure the pH of water at your Hydrosphere study site.
Learn how to measure the temperature of a water sample by using an alcohol-filled thermometer or temperature probe.
Learn how to determine the transparency of water using a Secchi disk and a transparency tube.