Just thought this list could help in making informed choices.
Usually this is for 3/4 cup of cereal. Only the cereal.
Info from:
http://www.nal.usda.gov/fnic/foodcomp/search/Corn Flakes Phosphorus, mg 10
CORN POPS Phosphorus, mg 10
FROSTED FLAKES Phosphorus, mg 16
QUAKER Puffed Rice Phosphorus, mg 17
COCOA PUFFS, Phosphorus, mg 20
TRIX Phosphorus, mg 20
Corn CHEX Phosphorus, mg 22
FROOT LOOPS Phosphorus, mg 25
APPLE JACKS Phosphorus, mg 26
COCOA KRISPIES Phosphorus, mg 32
Rice CHEX Phosphorus, mg 35
GOLDEN GRAHAMS Phosphorus, mg 40
RICE KRISPIES Phosphorus, mg 42
Honey SMACKS Phosphorus, mg 46
CINNAMON TOAST CRUNCH Phosphorus, mg 48
LUCKY CHARMS Phosphorus, mg 83
CHEERIOS Phosphorus, mg 130 !!!
Information=Empowerment