Water

Question 1

Type 3

Answer 1

• activated charcoal filter

- still some impurities

Question 2

Type 2

Answer 2

• deionization - leaves behind minerals and bacteria - removes CO2 and ions
• pre treatment step
• makes treatment less expensive for distillation
• used to rinse some glass wear
  OR
• Distilation - leaves behind chlorine and CO2
• removes minerals, ions and destroyed bacteria (not spores)
• used to make reagents in routine med labs

Question 3

Type 1

Answer 3

• Use in research labs, calibration buffers
• cannot store
• distillation and deionization

Question 4

Reverse Osmosis

Answer 4

• only removes 10% of ions and 98% organic debris
• forces water across a membrane using energy (active transport ion pump)
• leaves 90% ions
• expensive
• not good quality

Question 5

Tap water

Answer 5

• contains bacteria, ions, minerals

- used for rinsing hands, first wash, and diluting bleach