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:

Therefore, the pH, alkalinity, hardness, and conductivity of receiving water samples should be determined before each use.
In the studies with the freshwater organisms, the water hardness for five of the six laboratories ranged between 36 and 75 mg/L.
The softness and hardness at issue here are not, of course, the words having literally to do with the physical properties of the same name, but rather the higher, metaphorical qualities associated with the words: that is, hard in the sense of "stern," "uncompromising," "grim," "tough," "realistic," "verifiable," or "physically palpable"; and soft in the sense of "moderate," "subjective," "subject to emotion," "simple," "idealistic," "weak," or "physically immaterial."
To be adequate for general laboratory use following dechlorination, the tap water is passed through a deionizer and carbon filter to remove toxic metals and organics, and to control hardness and alkalinity.
If the objective of the test is to estimate the chronic toxicity of the effluent in uncontaminated receiving water, the test may be conducted using dilution water consisting of a single grab sample of receiving water (if non-toxic), collected either upstream and outside the influence of the outfall, or with other uncontaminated natural water (ground or surface water) or standard dilution water having approximately the same characteristics (hardness, alkalinity, and conductivity) as the receiving water.