^a Ceftolozane component. Ceftolozane in a 2:1 fixed-ratio concentration with tazobactam.

^b Tested in PVC containers.

^c Tested in FOLFusor polyisoprene elastomeric pumps (Baxter).

^d Tested in polypropylene syringes.

^e Tested in Easypump II elastomeric pumps (B Braun).