Please note: Symbols for LD50 values
Some devices may read symbols incorrectly in Word and possibly HTML and PDF. The Greek letter ‘mu’ is used in five provisions (LD50) in the Gene Technology Regulations 2001 as part of a recognised international symbol indicating ‘micrograms’. This symbol is usually displayed correctly. However, some devices may display it incorrectly, making units read as ‘mg’ (milligrams), which significantly changes the meaning of the legislation. ‘mg’ is not used in the Gene Technology Regulations 2001. The definitive legal PDF versions, where the problem will not occur on most devices, can be accessed from the ‘Download’ tab on ComLaw web pages linked from the OGTR website.