Western Australian standards
Internal maturity standards are based on the three key parameters that affect the taste and acceptability of citrus fruits to consumers:
- juiciness
- sweetness
- balance between sweetness and tartness.
The Western Australian standards have been written into the Biosecurity and Agricultural Management (Agricultural Standards) Regulation 2013 Part 5.
All citrus fruit produced in Western Australia and sold on the fresh market must meet these minimum standards.
Internal maturity standards 2023
Western Australian minimum internal maturity standards set for different citrus types for the 2023 citrus season are found in Tables 1 and 2 below.
| Fruit Type | % Juice content | Minimum BrimA |
|---|---|---|
| Oranges (navel & valencia only) | 38 | 90 |
| Imperial mandarins | 33 | 110 |
| All other mandarins | 35 | 110 |
| Fruit Type | % Juice content | Brix° | Minimum Brix°:Acid ratio |
|---|---|---|---|
| Blood oranges | 38 | 9 | 8:1 |
| Tangelos | 40 | 9 | 8:1 |
| Grapefruit & Pomelos | 33 | 8 | 6:1 |
| Hybrids of any species | 33 | 8 | 8:1 |
| Lemons | 25 | na | na |
| Limes | 33 | na | na |
National standards
Citrus Australia provides national citrus quality standards which are based on similar parameters as the WA standards such as the brix and acid levels of fruit. For more information visit the Australian Citrus Quality Standards webpage.