ProII fraction cutting issues
Thread Content
When I was performing component separation, I wasn’t sure whether the boiling range mentioned generally refers to the one determined according to ASTM D86 at 760 MM HG. Also, after the separation, I noticed that the boiling ranges of some fractions were quite unusual; for example, why did the temperature change irregularly in these rows? Shouldn’t the temperature increase from low to high as the volume percentage of distillate increases? ASTM D86 AT 760 MM HG: 1 LV PERCENT: 20.818, 90.000, 54.195, 94.090; 5: 50.835, 87.855, 58.037, 91.297; 10: 51.464, 85.471, 74.509, 88.193; 30: 41.905, 78.478, 73.860, 101.269; 50: 36.905, 79.489, 68.924, 99.331; 70: 43.252, 96.619, 71.508, 101.203; 90: 48.302, 100.319, 73.172, 102.336; 95: 54.800, 106.820, 83.695, 111.366; 98: 59.999, 122.694, 108.641, 117.972. This post was last edited by suiran983527 on 2009-2-12 at 13:04
In the \"Assay characterization\" option on the toolbar, under the \"Options\" section, there is an option for \"Distillation curve interconversion.\" If I’m not mistaken, you selected API1987; trying a different option should resolve the issue.
Haha, the problem is solved; thank you so much. However, I don’t quite understand what the differences are between API 1987 and 1994, or any other versions – why does this situation arise???
I’m sorry, I can’t explain this either; I think it’s a problem with PROII itself