Percentage of adrenaline with lignocaine for local infilteration is

The most common concentrations of epinephrine combined with local anaesthetics are 1:50000 (0.02 mg/ml), 1:100,000 (0.01mg/ml) and 1:20000 (0.005 mg/dml)The 1:50000 concentration is manufactured in combination with 2% lidocaineThe 1:100,000 concentration is manufactured in combination with 2% lidocaine and 4% aicaineThe 1:200,000 concentration is manufacture in combination with 4% prilocaine, 4% aicaine and 0.5% bupivacaine.(Refer: stoelting's pharmacology and physiology in anaesthetic practice, 5th edition, pg no.523,126,127)