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9 Cards in this Set
- Front
- Back
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What are the 3 components in an autodilutor?
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1. Pipetting device
2. Power supply 3. Valve control units |
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what are two types of pipetting devices?
What else needs to accompany? |
Plunger
Piston needs volume adjustment |
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what are 2 ways to adjust volume?
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-Lock in the stroke of the cylinder.
-Modify the cam radius |
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What type of power supply is typically seen in autodilutors?
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-Electric motors - most
-Pneumatics |
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How are valves typically controlled?
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with electrical switches
OR pneumatics, by lining up tubes. |
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what are three types of balances?
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-two pan balance
-substitution weight balance -electrobalance |
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what is the diffnc between two-pan and substitution balances?
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2-pan: add sample, add standard wghts to restore equilibrium.
Subst: add unknown, remove weigts to restore equilibrium. |
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what is the most sensitive type of balance?
what has the most capacity? |
Sensitive: 10^-7 grams is the electrobalance.
Capacity: two-pan up to 2000 g |
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what are sources of error to consider in placing your electrobalance?
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-away from sunlight
-away from drafts -put on marble table for no vibrations -level with foot screws clean, verify optical zero. |
