If you have cloudy glasses after they come out of the dishwasher it could either be from hard water filming or etching. To identify the cause try soaking the glassware in undiluted white vinegar for about 5 minutes. If the film is gone, the cloudiness is from hard water. If it is not removed, the glasses are etched.
Etching is a permanent pitting or eroding of the actual glass surface. It usually appears as shades of blue, purple, brown or pink when the glass is held at an angle toward the light. As the etching becomes more advanced it starts to appear cloudy or can even look frosted. Unfortunately there is no way to restore glasses that are etched.
Here are some tips to help avoid etching on your glasses.
- If all of the food is removed from the dishes prior to loading them in the dishwasher it increases the alkaline concentration of the dishwasher detergent and it increases the possibility of etching.
- Adjust the amount of detergent according to the level of water hardness. If you have soft water less detergent is needed.
- Having the water temperature too high can also be a problem. Water entering the dishwasher should be between 120° F – 140° F.
If the vinegar removed the cloudiness here are some steps to keep it from returning.
- Use the correct amount of detergent for the level of hardness in your water. If you have extremely hard water it is very hard to get acceptable dishwashing results.
- If the water temperature is too cool it can also cause a film. Try running the hot water in your sink before starting the dishwasher. That will clear the cold water from the line. This is especially important when using a shorter wash cycle.
- The use of a rinse aid improves the sheeting action of the water, allowing it to slide off the dishes more easily and not leave water spots.
Use these tips to keep your glasses looking new!