Quick Review Cards for Medical Laboratory Science

(avery) #1

Volumetric Glassware Laboratory Operations Review 31


GLASSWARE DESCRIPTION/USE

Beaker


Erlenmeyer flask


Florence flask


Volumetric flask


Graduated cylinder (graduates)


Wide-mouthed, straight-sided jar with pouring spout. Not accurate enough for critical measurements.

Sloping sides. Graduated markings. Used to hold liquids, mix solutions, measure noncritical volumes.

Spherical base with long cylindrical neck. Single calibration mark. Only for noncritical measurements.

Pear shaped. Long neck with single calibration mark. Manufactured to strict standards. Glassware &
solutions should be at RT. Used to prepare standards & reagents. Shouldn’t be used to store solutions.

Upright, straight-sided tube with flared base. Used for noncritical measurements. Most are TD.
Shouldn’t be used to measure <5 mL or <10% of capacity. Use graduate closest in size to volume to
be measured.
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