10 Questions
Which method of water purification involves pumping water across a semipermeable membrane?
Reverse osmosis
What is the classification of laboratory reagent water based on, according to the Clinical and Laboratory Standards Institute?
Specifications needed for its use
Which type of water purification involves the use of ultraviolet light and sterilization?
Distillation
What type of water is produced solely by purification through distillation?
Distilled water
Which category of reagent grade water is based on the specifications needed for its use?
Clinical laboratory reagent water (CLRW)
What is the purpose of activated charcoal in filtration cartridges for municipal water supplies?
To remove organic materials and chlorine
What is the primary method used to produce deionized water?
Anion or cation exchange resin
What is the main function of reverse osmosis in water purification?
Forcing water through a semipermeable membrane
What does deionized water lack despite the removal of ions?
Sterility
What substances are removed by submicron filters in filtration cartridges for municipal water supplies?
Substances larger than the filter’s pores, including bacteria
Study Notes
Water Purification Methods
- Reverse osmosis involves pumping water across a semipermeable membrane.
Laboratory Reagent Water Classification
- Classification is based on specifications needed for its use, according to the Clinical and Laboratory Standards Institute.
Ultraviolet Water Purification
- This method involves the use of ultraviolet light for sterilization.
Distilled Water
- Distilled water is produced solely by purification through distillation.
Reagent Grade Water Categories
- Categories are based on the specifications needed for its use.
Activated Charcoal in Filtration Cartridges
- Activated charcoal is used to remove impurities and improve taste and odor in municipal water supplies.
Deionized Water Production
- Deionized water is primarily produced through the removal of ions.
Reverse Osmosis Function
- The main function of reverse osmosis is to remove impurities and salts from water.
Deionized Water Characteristics
- Deionized water lacks ions, but may still contain other impurities and contaminants.
Submicron Filters
- Submicron filters remove particulate matter, bacteria, and viruses from municipal water supplies.
Test your knowledge of laboratory water purification methods in this quiz. Explore the differences between distilled water, deionized water, and reverse osmosis, and understand their applications in laboratory procedures.
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