micro- technique

in thermal analysis
https://doi.org/10.1351/goldbook.12298
Prefix used to denote that the technique measures small quantities, either with respect to the amount of sample studied, or with respect to the change in the properties measured.
Notes:
  1. This prefix has been applied to many thermal methods, and the equipment associated with them, for example, microbalance, microreactor, microcalorimeter and also to the technique itself: microthermal, microscopic, and the property studied: microstructural.
  2. The opposite prefix, macro-, is also occasionally used.
  3. Mathematically, micro = \(\upmu\) = \(\pu{E-6}\).
Source:
PAC, 2014, 86, 545. (ICTAC nomenclature of thermal analysis (IUPAC Recommendations 2014)) on page 548 [Terms] [Paper]