Yes, alchemists can use spell trigger items, wands and staves, but not spell completion items, scrolls. So an alchemist can freely use a wand of cure light wounds without the need for for use magic device.
An alchemist can still use spell completion items like scrolls with a successful use magic device check as with anyone else.
wheres that in the books so i can point it out to my dm
In the APG, under 'alchemy' in the alchemist class features section.
Relevant text:
"Although the alchemist doesn't actually cast spells, he does have a formulae list that determines what extracts he can create. An alchemist can utilize spell-trigger items if the spell appears on his formulae list, but not spell-completion items (unless he uses Use Magic Device to do so). "
Note that the Investigator doesn't have the same line in his alchemy entry and can't use wands without using other means.
