Common Laboratory Glassware

andVolumetric Glassware

Prepared ByMichigan Department of Environmental Quality

Operator Training and Certification Unit

GLASSWARE

GriffinBeaker

ErlenmeyerFlask

GraduatedCylinder

Graduated Pipet

GLASSWARE

GriffinBeaker

ApproximateGraduations

GLASSWARE

ErlenmeyerFlask

ApproximateGraduations

GLASSWARE

GraduatedCylinder

Used for Routine Volume Measurements of 25 mL or Greater

GLASSWARE

Graduated Pipet

Used for Routine Volume Measurements of 25 mL or Less

Wide TipUse When Solids in Sample

GLASSWARE

Graduated Pipet

NOT VOLUMETRIC

Wide TipUse When Solids in Sample

Volumetric GlasswareVolumetric Glassware

Required for HighAccuracy and Precision

Required When Preparing or UsingStandard Solutions

Volumetric GlasswareVolumetric Glassware

Volumetric Transfer Pipet

Accuracy and PrecisionStandard Solutions

BuretVolumetric

Flask

VOLUMETRIC VOLUMETRIC GLASSWARE

Must BeUsed

Properly

BURETBURET

ToDeliver

CalibrationTemperature

BURETBURET

CompletelyCoat

InsideSurface

RinseWith Titrant

NotCleanNot

Clean

BeadsBeadsofof

LiquidLiquid

RinseThreeTimes

Fill to AboveTop Graduation

DischargeAllAir

Bubbles

DrainUntilTopof

LiquidIs In

Graduations

CurvedSurfaceof Liquid

MENISCUS

MENISCUSREADER

X

XO

Proper ReadingProper Reading

Bottomof

Meniscusto

Top of Graduation

Increase TenGraduations

}

9.64 24.16

RecordInitial

Reading

AddIndicator

ProperGrip

MixWell

NearEndpoint

Split Drops TransferTo

FlaskRinseInto

Reaction

At EndpointRead Record

FinalReading

Final Reading – Initial Reading = Volume Delivered

ProperlyDisposeExcess

ProperlyClean

AirDry

ProperStorage

VolumetricTransferPipets

OneOneCalibrationCalibration

ToToDeliverDeliver

CalibrationCalibrationTemperatureTemperature

VolumetricVolumetricTransferTransfer

PipetsPipets

VolumetricVolumetricTransferTransfer

PipetsPipets

FillBy

Vacuum

FillBy

Vacuum

PipetBulb

Rinse

MustDrain Evenly

NotCleanNot

Clean

FillAbove

Calibration

WipeTip

DrainTo

Calibration

TouchContainer

ToRemove

Drop

AllowTo

Drain

TouchTipTo

Flask

SomeWill

RemainIn Tip

Exception

ETCHEDRingNOT

PaintedFOR

BLOW-OUT

ProperlyClean

AirDry

Using Volumetric PipetsUsing Volumetric Pipets1. Rinse with solution to be pipeted

(Observe for even draining)

2. Fill to above graduation

3. Wipe off outside of pipet

4. Drain to graduation( bottom of meniscus to top of graduation)

5. Touch tip to waste vessel

6. Transfer by gravity(vertical - don’t force)

7. Touch tip to inside of receiving flask

(clean pipet)

Volumetric FlasksVolumetric FlasksVolumetric FlasksVolumetric Flasks

TC ToContain

NOT Intended To DeliverNOT Intended To Deliver

To Prepare SolutionsWith Accurately Known Concentration

FillHalfAndMix

FillTo

BelowGraduation

FillDrop-wise

ToCalibration

InvertRapidly

TransferTo

ReagentBottle

ProperlyClean

AirDry

Volumetric GlasswareVolumetric Glassware

Volumetric Transfer Pipet

Accuracy and PrecisionStandard Solutions

BuretVolumetric

Flask

Common Laboratory Glassware

andVolumetric Glassware

Prepared ByMichigan Department of Environmental Quality

Operator Training and Certification Unit