Summary of Microbiological Testing:
Independent microbiological testing of Australian Tea Tree Oil has shown the minimum inhibitory concentration (MIC) of the oil against a variety of
micro-organisms (ie the lowest concentration which will inhibit the growth of a specified
micro-organism), several hundred in vitro tests have been conducted using Pharmaceutical Grade Australian Tea Tree Oil.
In summary, it may be concluded that Australian Tea Tree Oil is active against a wide range of
micro-organisms including the following:
| GRAM POSITIVE BACTERIA |
MIC(%v/v) |
| Staphylococcus aureus |
0.5-1.0 |
| Staphylococcus epidermidis |
0.5-1.0 |
| Streptococcus pneumoniae |
0.25 |
| Streptococcus faecalis |
1.0 |
| Streptococcus pyrogenes |
1.0 |
| Streptococcus agalactiae |
1.25 |
| Propionibacterium acnes |
0.75 |
| Beta haemolytic streptococcus |
0.5 |
| GRAM NEGATIVE BACTERIA |
MIC(%v/v) |
| Escherichia coli |
0.5 |
| Klebsiella pneumoniae |
1.0-2.0 |
| Citrobacter spp. |
0.5-1.0 |
| Shigella sonnei |
0.5 |
| Proteus mirabilis |
0.5-1.0 |
| Legionella spp. |
0.75-1.0 |
| Pseudomonas aeruginosa |
2.0 |
| FUNGI |
MIC(%v/v) |
| Trichophyton mentagrophytes |
0.75 |
| Trichophyton rubrum |
0.5 |
| Aspergillus niger |
1.0 |
| Aspergillus flavus |
0.25 |
| Candida albicans |
0.5 |
| Microsporum canis |
1.0 |
| Microsporum gypseum |
1.0 |
| Thermoactinomycetes vulgarus |
1.25 |
| U.S.P. XXI Preservative Challenge Test: |
Pass (0.8%) |
| |
|
| B.P. (1980) Preservative Challenge Test: |
Pass (0.8%) |
| |
|
| Therapeutic Goods Act (TGA) Test: |
|
| TGA Hospital Grade Disinfectant Option A: |
Pass (pure oil) |
| TGA Antiseptic Grade Option D: |
Pass (5% cream) |
| TGA Hospital Grade Dirty Disinfectant Option B: |
Pass (pure oil) |
