Alfa Aesar Buffer solution, pH 4.0, Coloured Red, Alfa Aesar, Specpure
Manufacturer: Alfa Aesar 38713AP
|Sodium hydroxide: 0.7%; Potassium dihydrogen phosphate: 0.7%; water: 98.6%|
|23 hPa (17mm Hg) at 20°C|
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