Micromeritics Gemini VII 2390a, Operator'S Manual

Page: 303 / 426

SA
EXT
S cm
3
/
g A STP
–
 
10
10
A
/
m
 
D

cm
3
liquid
/
cm
3
STP
  
F
10
6
cm
3
/
m
3
  
----------------------------------------------------------------------------------------------------------------------------------------------------------
=
SA

P
SA
TOT
SA
EXT
+ =
V

P
Y
INT
cm
3
/
g STP
 
D cm
3
liquid
/
cm
3
STP
  
=
Gemini VII Appendix C
239-42828-01 - Dec 2012 C-9
Using the results of the above calculations, the following can be calculated:
External Surface Area (m
2
/g):
where
F = surface area correction factor, user-entered on the t-Plot Report Options dialog
D = density conversion factor, user-entered on the Adsorptive Properties dialog
Micropore Surface Area (m
2
/g):
where SA
TOT
is the BET surface area if the user enabled the BET report exclusively, or Langmuir sur-
face area if the user enabled the Langmuir report exclusively. If neither report has been selected, SA
TOT
is the BET surface area value calculated using a set of default parameters.
Micropore Volume (cm
3
liquid/g):