## STP

https://doi.org/10.1351/goldbook.S06036
Abbreviation for standard temperature ($$273.15\ \text{K}$$ or $$0\ ^{\,\unicode{x26ac}}\text{C}$$) and pressure ($$10^{5}\ \text{Pa}$$); usually employed in reporting gas volumes. Note that flow meters calibrated in standard gas volumes per unit time often refer to volumes at $$25\ ^{\,\unicode{x26ac}}\text{C}$$, not $$0\ ^{\,\unicode{x26ac}}\text{C}$$.