Micromeritics GEMINI VII Operator's Manual page 231

The use of equation (1) represents an improvement over the traditional algorithm. Kernel
functions corresponding to various classical Kelvin-based methods have been calculated for
differing geometries and included in the list of models.
M I
ODELS NCLUDED
Kelvin Equation with Halsey Thickness Curve
N2 - Halsey Thickness Curve
Geometry:
Substrate:
Category:
Method:
The kernel function is calculated using the Halsey equation with standard parameters:
The nitrogen properties used in the Kelvin equation are:
Surface tension =
Molar density =
N2 - Halsey Thickness Curve
Geometry:
Substrate:
Category:
Method:
The calculation is the same as above except that cylindrical geometry is assumed.
Reference:
Kelvin Equation with Harkins and Jura Thickness Curve
N2 - Harkins and Jura Thickness Curve
Geometry:
Substrate:
Gemini VII Operator Manual
239-42828-01 (Rev H ) — May 2021
Slit
Average
Porosity
Nitrogen 77 K
-1
8.88 dynes cm
-3
0.02887 g cm
Cylinder
Average
Porosity
Nitrogen 77 K
G. Halsey, J. Chem. Phys 16, 931 (1948).
Slit
Average
Models Based on Classical Theories
B - 15