Glassware, clean

Suspected contaminant from glassware cleaning procedures or analytical methods. 

Inadequate glassware cleaning procedures may produce false positive results due to sample cross-contamination. 

It is obvious then that there is no single magic potion that can clean all glassware. Cleaning laboratory ware is an art and your knowledge of what solvents, or combinations of solvents, to use for any given contaminant will improve with experience. 

Neatness and cleanliness are very important in a laboratory. Arrange the shelves above your table to suit your own convenience, but after every experiment, be sure to return each piece of equipment to its proper place. Keep all metal and glassware clean and dry. Keep the outside of your stock bottles clean and free of any chemical substance. Replace worn or torn boxes at once. Label everything in your laboratory correctly and legibly. Caution If you use kitchen utensils in your laboratory, make sure your mother doesn t want to use them anymore. Even if they re washed, it isn t safe to cook with them after they have held chemicals. 

Glassware (cleaning and drying using best available practices)... 

Cleaning of Glassware. Clean all glassware first by ordinary laboratory procedures and then by shaking with IN ammonium hydroxide solution, with deionized water, and with ethanol. 

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