Introduction and implementation of new vaccines: Field Guide

INTRODUCTION AND IMPLEMENTATION OF NEW VACCINES • 33
6.1 Equivalents
• 1 meter = 3,281 linear feet (1 foot = 0.30478 m)
• 1 cubic foot = 0.028311 m³ = 28,311 cm³ = 28.31 liters
• At a rate of 33 doses per liter, 28.31 liters x 33 doses/liter = 934.23 doses will
fit in 1 cubic foot. In other words,
• 934 vaccine doses can be placed in 1 cubic foot.
If the cold storage room in the previous example had a usable internal space of 87.75
liters, its usable capacity in cubic feet would be 87.75 liters divided by 28.31 liters/
ft³ = 3.0996 ft³, which is rounded off to 3.1 cubic feet.
It is verified that, in fact, 3.1 cubic feet x 934 doses/ft³ = 2,895.4 doses. This is
rounded off to complete doses (2,895), which was the result already obtained in the
calculation in paragraph 6.
Exercises
The following data are internal measurements (in linear meters) of the usable space
of refrigerators.
Where:
Height Width Depth
0.70 x 0.60 x 0.50 m
0.80 x 0.55 x 0.50 m
0.80 x 0.60 x 0.50 m
Based on these data, calculate:
• Total capacity
• 50% of capacity or “usable capacity” in liters
• Usable capacity in cubic centimeters
• Usable capacity in cubic feet
• Number of doses of vaccine that could be stored in the cold storage equipment