Multiple choice Infuse 1L over 12 hours. Drop factor: microdrip tubing. Solve for gtts/min. 83 ml/hr 60 gtts/min 83 gtts/min 75 ml/hr Reveal answer Fill a bubble to check yourself C Correct answer Explanation Microdrip tubing has a drop factor of 60 gtts/ml. To find gtts/min, multiply the hourly rate (1000 ml / 12 hr = 83.33 ml/hr) by the drop factor (60) and divide by 60 minutes, which equals 83.33 gtts/min.