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:

Tests performed at 20EC ±2EC; dilution water hardness, 100mg/L as CaCO3; dilution water alkalinity, 76 mg/L as CaCO3; effluent hardness, approx. 1000 mg/L as CaCO3; effluent alkalinity, 310 mg/L as CaCO3; effluent dilutions - 56%, 32%, 18%, 10%, 5.6%, 3.1%, 1.7%.
hardness, 80-100 mg/L as CaCO3).
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.
Instruments used for routine measurements of chemical and physical parameters such as pH, DO, temperature, conductivity, salinity, alkalinity, and hardness must be calibrated and standardized prior to use each day according to the instrument manufacturer's procedures as indicated in the general section on quality assurance (see EPA Methods 150.
The total hardness of the control should be comparable to the receiving water.