Water Quality Parameters: Conductivity & Hardness

Two other important chemical parameters to understand in water quality monitoring are conductivity and hardness. Conductivity is a measure of a solution’s ability to conduct electricity, and therefore a measure of the water’s ionic activity and content. The more dissolved salts in water, the higher its ionic content, or conductivity.  Conductivity is a good measure [...]

Conductivity: Pure Water + Sulfuric Acid

In this video, Dr. David Hobbs observes the conductivity of pure water plus sulfuric acid. Right-click or ctrl-click this link to download.

Conductivity: Pure Water + Acetic Acid

In this video, Dr. David Hobbs observes the conductivity of pure water plus acetic acid. Right-click or ctrl-click this link to download.

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Conductivity: Pure Water + CaCO3

In this video, Dr. David Hobbs observes the conductivity of pure water plus calcium carbonate (CaCO3). Right-click or ctrl-click this link to download.   And in the following video, Dr. Hobbs discusses the ionization of calcium carbonate and potential environmental implications. Right-click or ctrl-click this link to download.

Conductivity: Pure Water + NaCl

In these short videos, Dr. David Hobbs demonstrates the conductive properties of water. Conductivity refers to the amount of dissolved solids present in an aqueous solution, allowing it to conduct electricity. In this first video, Dr. Hobbs observes changes in conductivity when salt (sodium chloride, NaCl) is added to pure, or deionized, water. Right-click or [...]

The MSP project is funded by an ESEA, Title II Part B Mathematics and Science Partnership Grant through the Montana Office of Public Instruction. MSP was developed by the Clark Fork Watershed Education Program and faculty from Montana Tech of The University of Montana and Montana State University, with support from other Montana University System Faculty.