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:

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.
The measured pH, hardness, etc., should be as listed in Table 3.
Reagents for hardness and alkalinity tests (see USEPA Methods 130.
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."
hardness, 80-100 mg/L as CaCO3).