The physician orders 1.25 L of normal saline (NS) to infuse over 10 hours. The nurse should set the IV pump at what flow rate (mL/hr)?

Number 2 is correct.

Solution: Convert the amount of saline in liters to milliliters: 1.25 L NS × 1,000 = 1,250 mL . To find the flow rate in milliliters per hour, divide the volume in milliliters by the time in hours: 1,250 mL/10 hrs = 125 mL/hr .