Microliter Symbol µL

µL is a two-character unit expression formed from the micro prefix symbol µ and the liter symbol L. One microliter is one millionth of a liter. Common contexts include Laboratory protocols, Pipette settings, Medical measurements, and scientific tables. This page covers the complete unit symbol µL; it is not Greek mu used as a variable, and the preferred liter symbol is uppercase L to avoid confusion with the digit 1. Practical examples include Transfer 25 µL, Volume: 0.5 µL, and Add 10 µL of buffer. The main formatting priorities are: Write µ and L without a space inside the unit symbol; place a space between the number and µl; and use uppercase l for clarity. Avoid these common errors: Writing 25µL without the value-unit space; writing µ l with a space inside the symbol; and using ml when microliters are intended. Practical uses recorded for Microliter Symbol: Transfer 25 µL; Volume: 0.5 µL; Add 10 µL of buffer; Range: 1 µL to 100 µL; 1 µL = 10⁻⁶ L. The Microliter Symbol format checklist says: Write µ and L without a space inside the unit symbol. Place a space between the number and µL. Use uppercase L for clarity. Do not pluralize the unit symbol. Avoid these Microliter Symbol failures: Writing 25µL without the value-unit space. Writing µ L with a space inside the symbol. Using mL when microliters are intended. Replacing µ with ordinary letter u without documenting the fallback. Forms that must stay separate from Microliter Symbol: μL means Greek-mu sequence—Visually similar sequence using Greek small mu; uL means ASCII fallback—Fallback used when µ is unavailable; mL means Milliliter—A thousand microliters. For Microliter Symbol, literal UTF-8 µL, decimal µ L, hexadecimal µ L, and CSS B5 4C all need to preserve U+00B5 U+004C; verify the result at /symbols/microliter/ in the target font.