Words similar to hardness

Example sentences for: hardness

How can you use “hardness” in a sentence? Here are some example sentences to help you improve your vocabulary:

Reagents for hardness and alkalinity tests (see USEPA Methods 130.
If acute/chronic ratios are to be determined by simultaneous acute and short-term chronic tests with a single species, using the same sample, both types of tests must use the same test conditions, i.e., pH, temperature, water hardness, salinity, etc.
It is recommended that total alkalinity and total hardness also be measured in the undiluted effluent test water and the dilution water.
N, the total number of LC50 values used in calculating the CV(%) varied with organism and toxicant because some data were rejected due to water hardness, lack of concentration measurements, and/or because some of the LC50s were not calculable.
The measured pH, hardness and alkalinity of the aerated water will be as indicated in Table 4.