Rinse clean plastic containers and lids with boiling water. Dry thoroughly.
Mix apple juice and lemon juice in large bowl. Stir in sugar.
Let stand 10 min., stirring occasionally.
Mix water and pectin in small saucepan. Bring to boil on high heat, stirring constantly. Boil and stir 1 min.
Add to juice mixture; stir 3 min. or until sugar is dissolved and no longer grainy. (A few sugar crystals may remain.)
Fill all containers immediately to within 1/2 inch of tops. Wipe off top edges of containers; immediately cover with lids.
Let stand at room temperature 24 hours. Jelly is now ready to use. Store in refrigerator up to 3 weeks or freeze extra containers up to 1 year. Thaw in refrigerator before using.