1. Units of measures commonly encountered in the lab
Dimensional Analysis
Units of measures commonly encountered in the lab

2. Units of measures commonly encountered in the lab
ng/ml mM mg
Dimensional Analysis
femtogram
Units of measures commonly encountered in the lab

3. From Robyt 1.1.1 Significant Figures 1.1.2 Scientific Notation
1.1.3 Units

4. Most Commonly Encountered Units
m (meter)
g (gram)
l (liter)

5. Use prefixes in tables and graphs
m (meter)
g (gram)
l (liter)
103 mm
103 mg
103 ml
106 mm
106 mg
106 ml
109 nm
109 ng
1012 pg
1015 pg
Use prefixes in tables and graphs

6. Most Commonly Encountered Units
m (meter)
g (gram)
l (liter)
103 mm
103 mg
103 ml
Mass of protein, cells
Volume of solutions
106 mm
106 mg
106 ml
Size of cells
Volume of DNA or Enzyme
Mass of DNA
109 nm
109 ng
Wavelength of light Size of virus
Mass of DNA
1012 pg
Weight of single cell
1015 fg

7. Derived Units - Concentration
g/l = mg/ml = mg/ml = ng/nl

8. Derived Units - Concentration
g/l = mg/ml = mg/ml = ng/nl
103 mg/l = 103 mg/ml = 103 ng/ml

9. Derived Units - Concentration
[Pro]
[DNA]
g/l = mg/ml = mg/ml = ng/nl
103 mg/l = 103 mg/ml = 103 ng/ml
ppm
[DNA]

10. Derived Units - Concentration
g/l
g/mol =
mol/l
(M)

11. Molar Concentrations g/l = mg/ml = mg/ml = ng/nl___
g/mol mg/mol mg/mmol ng/nmol
=? =? =? =?

12. Molar Concentrations g/l = mg/ml = mg/ml = ng/nl
g/mol mg/mmol mg/mmol ng/nmol
= mol/l (moles per liter) = M (molar concentration)

13. mM millimolar – units mmol/l – symbol mM M x 103 eg. 0.05 M = 50 mM
Concentration of buffers (Tris, Phosphate) and other salts (EDTA) in solutions

14. mM micromolar – units mmol/l – symbol mM mM x 103 eg. 0.5 mM = 500 mM
Concentration of trace minerals and vitamins
KM of many enzymes