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Safe Handling And Storage

Proper handling of glassware can reduce the risk of injury and accident.

  • Never convey a flask by its neck. Never convey a beaker close by.
  • Always carry glassware with two hands (support underneath with one hand).
  • Appropriate gloves should be worn in case if there's a risk of breakage (e.g. embedding a glass bar), chemical contamination, or thermal hazard.
  • When handling hot or cold glassware, always wear heat resistant gloves.
  • Do not apply high pressure on glassware. Stabilize glassware by a clamp and platform to alleviate weight.
  • Avoid over tightening and breakage while clamping the glassware.  Use coated clamps to anticipate glass-to-metal contact. 
  • Neck clamps should not be utilized as primary support for vessels bigger than 500 mL.
  • Ground-glass joints are made for a flawless fit and might stick infrequently.
  • Never apply excess force on a joint free. It can bring the glass about to break.
  • Lubricate surfaces using grease or use a Teflon sleeve.
  • A heat gun can delicately release the joints.
  • Never heat or cool glassware unless it is intended for those procedures.
  • Round-bottom flasks are best for boiling fluids.
  • Never set hot glass on a cold benchtop.

When storing glassware, remember to:

  • Keep it away from shelf edges.
  • Place glassware toward the back of benches or hoods.  (Remember: Fume hoods and biosafety cabinets should not be used for storage.)
  • Don't let instruments roll around in drawers (use drawer pads).