<http://schema.org/description>
"To the readers: My February 2004 column contained a question and answer regarding passivating to a standard QQ-P-35 (www.pfonline.com/articles/clinics/0204cl_clean2.html). The information below was in response to that column and provides additional background and insight."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.pfonline.com/articles/qq-p-35-passivation>