BIOL 1406
PreLab 1.5
What are the SI units for measuring volume?

Many types of lab glassware can be used to measure volume 
The basic unit of volume is the liter (L). You should be able to rapidly convert measurements between liters, milliliters, and microliters.
One liter (L)  = 1,000 milliliters (mL)  = 1,000,000 microliters (μL) 
One milliliter (mL)  = 1,000 microliters (μL)  = 0.001 liter (L) 
To convert liters to milliliters, multiply by 1,000.
2 L x 1,000 mL/L = 2,000 mL
To convert milliliters to liters, divide by 1,000:
300 ml / 1,000 mL/L = 0.300 L
To convert milliliters to microliters, multiply by 1,000.
0.600 mL x 1,000 μL/mL = 600 μL
To convert microliters to milliliters, divide by 1,000:
1,500 μL / 1,000 μL/mL = 1.5 mL
Your Turn  
Express the following measurements in liters:  
250 μL =  Hint  Check your answer. 
1,500 μL =  Hint  Check your answer. 
37 mL =  Hint  Check your answer. 
Express each of the following measurements in milliliters:  
2.56 L =  Hint  Check your answer. 
0.0008 L =  Hint  Check your answer. 
1,037 μL =  Hint  Check your answer. 
Express each of the following measurements in microliters:  
0.347 mL =  Hint  Check your answer. 
0.00004 L =  Hint  Check your answer. 
0.062 L =  Hint  Check your answer. 
Your Turn  
Examine the figure carefully.


What is the volume of fluid in the 10 mL graduated cylinder? 
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