What do you mean by NTP (normal temperature and pressure) and STP (standard temperature and pressure)?
- STP stands for standard temperature and pressure. These standards have been set by the IUPAC. For STP conditions, the temperature is 273.15K (00 C) and pressure is 1 bar (105 Pascals).
- NTP is defined as normal temperature and pressure. For NTP conditions, the temperature is 293.15 K (200C) and pressure is 1 atm pressure which is equal to 1.01325X 105 Pascals.