Classification of water in terms of preparation

Question 1

1. Water purified by distillation, purified to remove almost all organic materials. Water is boiled, vaporized, and condensed, distillation of water can be more than once
2. process of removing dissolved gasses by nonvolatile substances carried over steam in the distillation process or by dissolved substances from storage containers; Reagent used in electrophoresis and MolBio
3. Used for test that require (—-) free water

Answer 1

1. Distilled water
2. Double distillation
3. Ammonia free water

Question 2

• Water purified by ion exchange
• Removes some or almost all ions
• Organic materials may still be present it is neither pure nor sterile
• Purified from previously pre-filtered or distilled water produced using either anion or cation exchange resin

Answer 2

Deionized Water

Question 3

TOF. The HIGHER the water resistance, the LOWER purity.

Answer 3

F (higher purity)

Question 4

What component is used to remove organic material for water purification?

Answer 4

● Activated charcoal (removes organic
material)
● Glass
● Cotton
● Submicron filter (0.2mm)
● Membrane

Question 5

● Uses pressure to pump water across a semipermeable membrane, thereby producing filtered product of the original water.
● Use also for pretreatment of water.

Answer 5

Reverse-Osmosis

Question 6

Most commonly used reagent in a clinical lab?

Answer 6

Water

Question 7

CLASSIFICATION OF WATER IN TERMS OF TYPE

1. Acceptable for most analytic requirements
2. Autoclave wash water: acceptable for glassware washing but not for analysis or reagent preparation
3. Used in clinical chemistry (highest purity); Acceptable for most analytic requirements including reagent, quality control and standard preparation

Answer 7

1. Type 2
2. 3
3. 1