Care of Lab Glassware
- Wash all glassware both before and after using.
- Do initial rinsing with tap water, then wash glassware with a lab detergent, such as Alconox, that will not leave any residue. (Do not use regular dish detergent.)
- Do final rinsing with either distilled or deionized water, not tap water. If you use glass lab ware frequently, it may be worthwhile to invest in a water deionizer.
Note: Deionized water is less expensive than distilled water, but deionized water is NOT safe for drinking.
- Glassware is clean when no water droplets bead on the inner surface.
- Invert glassware on a drying rack to dry. Do not use a towel or air-blower.
- Never place glassware directly on a heat source. Use a trivet or wire gauze between the glassware and the heat source.
- Although glassware is highly resistant to heat, temperature changes, oxidizers, and other chemicals, it is still fragile. Know when to use glassware and when to use plastics.
- Use the appropriate type of glassware.
Borosilicate glass can withstand severe temperature changes without breaking. It also has a high resistance to chemicals. Although more expensive than flint glass, borosilicate glassware is the better choice for lab beakers, flasks, and other lab glassware.
Flint glass is a soda-lime glass used when either heat and shock resistance or chemical durability are not a major concern. Flint glass is most often used in glass tubing.
© 2004 Anne Wallingford. All rights reserved.
To contact us, please click Email.