Multiple Graph Overlays - Micromeritics ASAP 2460 Operator's Manual

Generating Graph Overlays

Multiple Graph Overlays

The overlay process allows the importing of pore-size distribution data from an ASCII text file. The
ASCII text file must follow the format rules outlined below.
Multiple graph overlays can only be generated for:
• BJH Adsorption/Desorption
• Dollimore-Heal Adsorption/Desorption
• Horvath-Kawazoe
• DFT Pore Size/Surface Energy
• M-P Method
ASCII text file format rules
• The header must consist of one line to include title, two unit specifications, and distribution type:
- Accepted pore dimension units are: A, nm, um
- Accepted pore volume units are: cm3/g cm
--Accepted distribution types are: cumulative, incremental
Two examples of a header format:
My Title (A, cm3/g incremental) 
My Title (A, cm3/g, cumulative)
• The data must be in two columns and should be separated by a comma or white-space.
• The data lines must be ordered so that pore dimensions are monotonically increasing or decreasing.
Sample ASCII text file
silica alumina bjh ads (A, cm3/g, cumulative)
456.657
444.847
429.168
425.419
419.629
360.634
340.859
326.601
2-58
3
/g, ml/g
0.0133559 
0.0546427 
0.0869924 
0.119721 
0.132681 
0.156611 
0.197672 
0.233092
ASAP 2460 Operator's Manual
246-42800-01 - Aug 2013