All used Sharps must be discarded
immediately
after use into an
appropriate Sharps Container. OSHA**
** In application it means you must put
the needle into the sharps container
immediately, and the sharps container is to be within reach.
It would not be permitted to walk to a sharps container located
somewhere else
in the shop for sharps disposal.
The needle cannot be placed on a surface after use prior to
discarding it.
The word "must" is an absolute that does not allow for exception.
Call you local Health Department or EPA for disposal regulations.