How many gtt/min corresponds to a flow rate of 60 mL/hr with a drop factor of 20 gtt/mL?

To determine the flow rate in drops per minute (gtt/min) from a flow rate of 60 mL/hr and a drop factor of 20 gtt/mL, the following calculation needs to be performed:

1. First, convert the flow rate from mL/hr to mL/min. Since there are 60 minutes in one hour, you would divide the hourly rate by 60.

[

60 \text{ mL/hr} \div 60 \text{ min/hr} = 1 \text{ mL/min}

]

2. Next, to find the number of drops per minute, multiply the flow rate in mL/min by the drop factor. This involves multiplying 1 mL/min by 20 drops/mL.

[

1 \text{ mL/min} \times 20 \text{ gtt/mL} = 20 \text{ gtt/min}

]

3. Finally, since there are 60 minutes in an hour, to find out the total number of drops over an hour, you would multiply the drops per minute by 60.

[

20 \text{ gtt/min} \times