#145 Total Dissolved Solids in Water Testing indicates dissolved salts that conduct electrical current.
Each water sample is tested for Total Alkalinity of Water (1 test on each water sample).
Safe Fast Educational Fun.
Total Dissolved Solids (TDS) in tap water is very common and is very quick and easy with these test strips. The EPA Secondary Drinking Water Standard for for TDS is 500mg/L or ppm.
This test combines nicely with most other water tests. Water testing takes less than a minute per sample.
More detailed information about this kit: # 145 Total Dissolved Solids in Water Test Kit.
Basic water related reference information at: sciencefairwater.com Water Basics 101 (a web work in progress).