TO RETAIN, practice. To engage the services of an attorney or counsellor to manage a cause, at which time it is usual to give him a fee, called the retaining fee. The act by which the attorney is authorized to act in the case is called a retainer.
One explanation for the difference in the levels of catechins found in this study and others is the type of samples used. In comparative studies, leaves of Camellia sinensis 4 Discussion Table 1. Levels of catechins and caffeine in tea bags, extract, and ready-to-drink green tea.
However, this general guide can help you determine approximately how much caffeine is in your coffee drink. 1  Drip Brewed Arabica Coffee (6 oz) - 80-130 mg (often around 110 mg) 2  Drip Brewed Robusta Coffee (6 oz) - 140-200 mg. 3  Drip Brewed Passiona Excelsa/Arabica Low-Caffeine Coffee Blend (6 fl oz) - 40-60 mg.