Phosphate-Citrate Buffer pH 4.2

Composition

Concentration	Ingredient
41.2 mM	Na₂HPO₄
29.4 mM	Sodium Citrate Tribasic

Amount to add	Ingredient
4.1 ml	Sodium Phosphate Dibasic, 1 M
2.9 ml	Sodium Citrate Tribasic, 1 M