Micromeritics ASAP 2020 Confirm Operator's Manual page 139

New
Adsorptive
(continued)
Smooth differentials
Cumulative Reports
BJH Correction
Standard
Kruk-Jaroniec-Sayari
Faas
Pressure Range
202-42811-01 - Mar 2011
The recommended adsorptives and their values are shown.
You may specify up to six additional adsorptive/adsorbate
property factor combinations.
The adsorbate property factor is the combination of constants
in the numerator of the BJH equation which is specific to the
type of gas used. Adsorbate property factors may be specified
in angstroms or nanometers. Select Options > Units to spec-
ify desired units.
Smooths all of the differential calculations, eliminating varia-
tions in the differential computation caused by noise in the
input data.
Select Larger to report the total volume found in pores
larger than the current pore size. This is the traditional way
in which BJH data are displayed.
Select Smaller to report the total volume found in pores
smaller than the current pore size.
Enables you to choose the type of correction to apply to
calculations. The type you choose will be displayed in the
report header.
Uses original BJH models.
Good for reference thickness curves.
Good for statistical thickness curves.
Displays the Report Relative Pressure Range dialog so that
you may specify minimum and maximum relative pressures
to use with this report.
• If Use calculation assignments is not selected on the Col-
lected/Entered dialog, all of the nonoutlier points of the
collected data within the specified range are used for calcu-
lating the data for this report.
• If Use calculation assignments is selected, collected data
points which are assigned to this report type are used.
ASAP 2020 Confirm
4-63