There is a number variables that define citrus quality requirements. Quality standards differ depending on the citrus type, growth region and the market.
Citrus External Appearance
The degree and level os these external factors can make a big difference to crop price and marketability.
Citrus Taste and Juice Content
Although yield is often the main focus when growing citrus for processing, juice quality is also important and crops are assessed for TSS and acidity.
The TSS/acid ratio provides an indication of the taste of the fruit - sweet or bitter. The lower the TSS/acid ratio the more sweeteners are added to achieve acceptable taste and sweetened juices are labeled as such and receive lower prices.
Juice color is also important and countries have specified color range scores that are required for premium marketability.