1: Unscripted part for head librarian (2,3)
3: Take Chair in university (3)
5: Odd bits of Niacin and Sprite (5)
7: Pate topping primarily honey and tamari? (3)
8: Weight thrown around by tragic men (9)
9: Picture a dessert without topping (3)
10: A sample makes sense (5)
12: Pronounced ability to smell negative votes (3)
13: Inert form of saltpeter (5)