NASAA, BFA, DEM, OHGA, HFA and OFC (abbreviations are explained below) are the main Certification Bodies of Australia. Their role is to ensure that all products with the label "Organic or "Biodynamic" are grown, harvested and produced in accordance to the requirements specified by that particular certification.
All certifications prohibit the use of chemicals, artificial fertilizers, chemically synthesized herbicides, pesticides, fungicides, fumigants and growth promotants.
All farmers use farming methods that are regenerative and in harmony with nature.
These products are also free from Genetically Modified Organisms.
To receive certification each farm under goes a chemical residue test of their product as well signing a Statutory Declaration covering the management practices of the previous five years. To keep their certification they must pass all random chemical residues testing thereafter.

What do the abbreviations mean?

NASAA - National Association of Sustainable Agriculture, Australia (Stirling, SA)
BFA - Biological Farmers of Australia (Toowoomba, QLD)
DEM - The Biodynamic Research Institute (Melbourne, VIC)
HFA - Herb Farm Australia
OHGA - Organic Herb Growers of Australia (South Lismore, NSW)
OFC - Organic Food Chain (Toowoomba, QLD)
Bio Gro - New Zealand's largest certifying body
BAC - Bio Agri Cert. (Europe)
USA - California Certified Organic Farmers (America)
Part Org - Some components of this product are organic mainly the Neem products
Not Org - These products are not organic Mainly Dr Bronners Soaps
Cert., B - If a certification has a "B" after it, then that particular product is in conversion to that certifying body.