var fDesc=new Array(); fDesc[0] = "SurfaceSpectra Isotope Pattern Viewer is free software that allows you to view and export isotope patterns.

The first version of this software provides a host of features such as;

Exact mass and natural abundance as specified by NIST
Gaussian peak shape of user-defined width
Summed peak envelope rather than a nominal mass stick spectrum
Isotope pattern drawn on the screen
Copy and paste to MS Word etc.
Export the envelope to a text file for MS Excel etc.
All stable isotopes of all elements covered - H to Uuu
Enter more than one element - SnCl4
Handles round brackets - CH3(CH2)2CH3 - and water of crystallisation - H2SO4.2H2O
Handles Deuterium eg D2O"; function tShowHide(id, show) { var s = document.getElementById("desc"); if ((s.innerHTML.length<=212 || show==1) && show!=2) { s.innerHTML = fDesc[id]; if (document.getElementById('m1')) document.getElementById('m1').style.display='none'; if (document.getElementById('m2')) document.getElementById('m2').style.display='none'; if (document.getElementById('more_txt')) document.getElementById('more_txt').style.display='inline'; } else { s.innerHTML = ''; } }