Metric teaspoons
Metric teaspoons are units used for measuring small quantities of liquid or dry ingredients. One metric teaspoon is 5 milliliters.
Microliters
Microliters are a unit of volume in the metric system used to measure very small amounts of liquid. One microliter is equal to one millionth of a liter. This tiny unit of measurement is often denoted by the symbol μL. To put it into perspective, a single drop of water is roughly equivalent to about 50 microliters.