Ambient pressure concept of pressure becomes irrelevant, and it is undefined at a gravitational singularity. The SI unit of pressure is the pascal (Pa), which is a very small unit relative to atmospheric pressure on Earth, so kilopascals (kPa) are more commonly used in this context. The ambient atmospheric pressure at sea level is not constant: it varies with the weather, but averages around 100 kPa. In fields such as meteorology and underwater diving, it is common to see ambient pressure expressed in bar or millibar. One bar is 100 kPa or approximately ambient pressure at sea level. Ambient pressure may in
Standard for the Uniform Scheduling of Medicines and Poisons and poisons are classified according to the SUSMP to achieve uniform national regulation. The current version, the SUSMP 16, is contained in the "Poisons Standard March 2018". Schedule 1 is blank. Schedule 1 does not currently contain any medicines or poisons. Schedule 2 (S2) drugs and poisons, otherwise known as Pharmacy Medicines, are substances and preparations for therapeutic use that – Examples: The SUSMP March 2018 defines a Schedule 2 substance as "Substances, the safe use of which may require advice from a pharmacist and which should be available from a pharmacy or, where a pharmacy service is not available,