Cipro

Ciprofloxacin 10 mg/mL stock

(final concentration in medium = 10 µg/mL)

100 mg in 10 mL dilute acid (add HCl drop by drop, mixing in between till it dissolves)

filter sterilize

1 mL aliquots

freeze

0.2 mg/mL for QSB

0.7 mL 10 mg/mL stock

35 mL water

filter sterilize

48 0.7 mL aliquots

To make mL 0.2 mg/mL cipro
you'll need: g cipro

freeze