70E is really the best source for determining selection and use of PPE. There are very few other options out there to maneuver through the PPE maze.

You could also consult a PPE manufacturer for guidance. But, usually they lean heavily on 70E and then develop some additional specific guidance for their equipment. For example one of these companies would be a good place to start.

W.H. Salisbury http://www.whsalisbury.com/

White Rubber Company http://www.whitesafetyline.com/index.html