Pumps and sprayers commonly use a unit of measurement called output or dosage, which is usually displayed in microliters (mcl), milliliters (ml), or cubic centimeters (cc). This measurement determines how much product is dispensed each time the pump is actuated.
Fine and regular mist sprayers commonly use mcl, or microliters, as their output measurement. A microliter is 1/1,000th of a milliliter.
Pumps and some larger sprayers have a much larger output capacity, so they typically use cc or ml for their output measurements. For example, most lotion pumps have an output range of 0.5cc - 4cc while some larger products have an output in the range of 4cc - 8cc.
It is important to understand these numbers, so that you can properly determine the best pump or sprayer for your product based on your desired output.