hanna portable conductivity meter, total dissolved solids
Agricultural and Biosystems Engineering
The HANNA D4 portable conductivity meter allows you to quickly estimate the amount of total dissolved solids (TDS) present in a water sample. To obtain valid measurements, you need to follow proper procedures in calibrating, rinsing, and measuring. Here is a step-by-step procedure for two HANNA D4 model meters, along with instructions for converting the meter reading of each meter to TDS (ppm). Depending on which meter you have, the actual meter reading will be different, but EC or TDS results are the same.
Walker, Julie and Ullery, Chuck, "How to Measure Total Dissolved Solids (TDS) Using the HANNA Portable Conductivity Meter" (2002). SDSU Extension Extra Archives. 55.