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# Post Lab Questions **1. The source of the active ingredient for the cefazolin ophthalmic drop is?** An IV injection compound. Learning objective #2 on first page **2. Tobramycin ophthalmic drops are made isotonic with?** Saline **3. Proetz solution gets which warning label?** "For the nose"...

# Post Lab Questions **1. The source of the active ingredient for the cefazolin ophthalmic drop is?** An IV injection compound. Learning objective #2 on first page **2. Tobramycin ophthalmic drops are made isotonic with?** Saline **3. Proetz solution gets which warning label?** "For the nose" **4. The pore size of the sterilization filter is?** 0.22 micron "μ" is symbol for micron.