glasswear are all cloudy after hand washing. What's the answer?
how do you get them clean?
- Dr WLv 711 months ago
Without knowing what is making your glassware cloudy, all I can do is guess like the others are doing.
But I'll tell you that when we need clean glassware in my labs, I have my lab techs rinse the glassware in analytical grade IPA, dry the glassware, then heat the glassware to 550°C in a muffle oven, then allow them to cool in a desiccator. Makes our glassware pristine.
We don't use reagent grade IPA nor acetone to rinse because they often leave residual oils behind (which show up as a cloudy film and often times turn brown). The heating to 550°C converts basically all organic residues to CO2 and H2O. Careful not to burn yourself or melt your glassware
- billrussell42Lv 711 months ago
I remember seeing an article in Consumer Reports on dishwasher detergents. Some brands causes a cloudy film to form on glasses and would not easily come off. It took many washings with a different detergent to clean them.
I don't remember any details, sorry.
Try soaking in vinegar...
- ChemTeamLv 711 months ago
Hard water ---> use distilled or RO water.
- el staplerLv 511 months ago
Hard water. Also try washing with cooler water