Liquid Handling

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Racks forSedimentation ConesRack for sedimentationcones with and withoutstopcockPMMA/PP, holds 2 Imhoff sedimentationcones (glass or plastic; with and withoutstopcock). Compact design and easy tocarry, even with cones filled. Pack of 1.Temperature and DensityLengthmmWidthmmHeightmmCat. No.300 130 400 3880 60Rack for plasticsedimentation conesPMMA/PP, holds 2 plastic sedimentationcones. Compact design and easy to carry,even with cones filled. Pack of 1.LengthmmWidthmmHeightmmCat. No.300 130 315 3880 50www.brand.de223
HydrometersTemperature and DensityHydrometersMeasuring ProceduresHydrometers determine the density of liquids or the concentrationof dissolved matter.Density is frequently indicated in g/cm 3 (g/ml) or in °Baumé.Concentration is indicated in percentage by volume (Vol.%) or inpercentage by mass (Weight%). Permissible deviations are within± 2 graduation marks.12'from below'/'from above'Temperature correction1. Measuring instrumentCertain applications may requirea correction to accountfor the thermal expansion ofthe hydrometer glass, if themeasuring temperature deviatesfrom the reference temperatureof the hydrometer.This factor corrects the resultfor the corresponding measuringtemperature.K t = (1-γ (t - t 0 )) ρK t For the density aftercorrectionγ Volume expansion coefficientof the hydrometerglass (25 ± 2) 10 -6 K -1t Measuring temperature °Ct 0 Reference temperature °Cρ Density reading g/mlMeasuring procedurePour the sample into a transparentcylinder (see fig. 1) andadjust its temperature to theindicated reference temperatureof the hydrometer. Immediatelybefore measuring, mixwell with a glass rod to reducediffering sample densities andtemperatures.A clean hydrometer shouldonly be touched above thescale. <strong>Liquid</strong> should not adheremore than 5 mm abovethe reading point.The meniscus should remaineven and not change its shapeor height when the stemmoves up and down.Hydrometer should first becleaned carefully in Mucasol ®(see page 312).Once the hydrometer hasreached its equilibrium, (floatingfreely without touchingthe walls of the cylinder) thedensity is read "from below"for transparent samples,non-transparent samples areread "from above". (see fig. 2).Check the temperature of thesample immediately after thereading. Maximum hydrometermeasuring temperature shouldnot exceed 70 °C.Note!2. SampleConversion tables for measureddensities to differenttemperature can be found inmany chemical references.These tables can provideexpansion coefficients anddensities for different sampletemperatures and concentrations.All scales are shown in originalsize.For hydrometers no certificatesare provided.224info@brand.de
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BRAND - Your Partner in the Lab.Wor
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About the ProductOrdering optionsOu
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About usIdeasPartnering for success
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About usFactory and ProductionAs th
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1949 195019571961196319641967197319
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© Mark Weathers Images/Flicks/Gett
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© Peter de Rooij/Flickr/Getty Imag
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Product NewsNew in this Catalog!New
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Liquid HandlingOne of the most impo
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Dispensette ® IIIDispensette ® Or
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Dispensette ® IIIDispensette ® Or
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Dispensette ® III / OrganicDispens
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Dispensette ® III / OrganicOrderin
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Dispensette ® III / OrganicAccesso
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Dispensette ® TANEW!Liquid Handlin
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Dispensette ® TAUse and HandlingGe
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seripettor ®seripettor ® proserip
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seripettor ® · seripettor ® proA
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seripettor ® · seripettor ® proO
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Titrette ® - the first bottle-top
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Titrette ®Use and HandlingLight-we
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Titrette ®Comparisonof error limit
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BRAND offers the ideal pipette for
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Transferpette ® STransferpette ®
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Transferpette ® SA Closer Look...A
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Transferpette ® S -8/-12A Closer L
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Transferpette ®Transferpette ® -8
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Transferpette ®Tip ejector capErgo
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Transferpette ®AccessoriesAccessor
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Transferpette ® -8/-12Ordering Dat
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Transferpette ® electronicTransfer
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Transferpette ® electronicA Closer
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Transferpette ® -8/-12 electronicA
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Transferpette ® -12 electronicOrde
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Pipette Tips and Filter TipsConsist
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Pipette Tips and Filter Tips5 - 300
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Pipette Tips and Filter TipsTipRack
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Pipette Tipssterile and non-sterile
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Filter Tipssterile and non-sterileF
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ULR Pipette Tipssterile and non-ste
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ULR Filter Tipssterile and non-ster
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The Transferpettor pipette is ideal
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Transferpettor · Ordering DataAppl
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Serial pipetting can be quick and e
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HandyStep ® SUse and Handlingn Inc
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The HandyStep ® electronic repetit
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HandyStep ® electronicUse and Hand
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PD-TipsPD-TipsPrecision Dispenser T
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Pipetting aids from BRAND excel by
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accu-jet ® pro Single-handed opera
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micro · micro-classicmicro Pipette
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The QuikSip bottle-top aspirator f
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The most frequent cause of inaccura
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PLT unitUse and HandlingTesting wit
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BRAND calibration software is compa
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EASYCAL 4.0 · Ordering DataQuit c
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Liquid HandlingBRAND onlineLiquid H
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Life ScienceResearch - and even rou
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Life ScienceCleanroom productionBRA
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Microcentrifuge TubesMicrocentrifug
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Microcentrifuge Tubes1.5 ml, with l
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Micro TubesMicro tubesattached scre
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AccessoriesMicrocentrifuge TubesAcc
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PCR TubesSingle PCR tubes0.2 ml and
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PCR Strips · PCR PlatesStrips of 8
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PCR Plates1Life ScienceLow profileL
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PCR Sealing Mats andSealing FilmsPC
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Thermal Cycler Compatibilitycontinu
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Deep-well PlatesDeep-well PlatesThe
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Racks · Tubes96 tube rackswith 0.6
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Cryogenic TubesCryogenic TubesDesig
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BRANDplates ® MicroplatesBRANDplat
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BRANDplates ®non-treatedApplicatio
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BRANDplates ®non-treated384-well M
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BRANDplates ®ImmunoassaysApplicati
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BRANDplates ®Immunoassays384-well
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BRANDplates ®Cell CulturecellGrade
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BRANDplates ®Insert SystemNEW!BRAN
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BRANDplates ®Insert SystemA Closer
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BRANDplates ®OverviewAt a Glance96
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CuvettesCuvettesLife ScienceFor mor
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CuvettesLife ScienceStandard Cuvett
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Life ScienceBRAND onlineLife Scienc
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VolumetricInstrumentsPrecision anal
Page 174 and 175: CertificatesBLAUBRAND ® Volumetric
Page 176 and 177: Bulb PipettesBulb pipettes, 1 markB
Page 178 and 179: Graduated PipettesGraduated Pipette
Page 180 and 181: Graduated PipettesGraduated pipette
Page 182 and 183: Graduated PipettesGraduated pipette
Page 184 and 185: Volumetric FlasksVolumetric FlasksB
Page 186 and 187: Volumetric FlasksVolumetric flasks,
Page 188 and 189: Volumetric FlasksVolumetric flasks,
Page 190 and 191: Volumetric Flasksmade of PlasticVol
Page 192 and 193: Graduated CylindersGraduated cylind
Page 194 and 195: Graduated CylindersDispensers, tilt
Page 196 and 197: Plastic Graduated CylindersGraduate
Page 198 and 199: BurettesBurettes, lateral stopcockB
Page 200 and 201: BurettesBurettes, lateral stopcockS
Page 202 and 203: BurettesThe Modular Burette Concept
Page 204 and 205: BurettesCompact burettes, 'Economy'
Page 206 and 207: Automatic BurettesAutomatic burette
Page 208 and 209: Automatic BurettesAutomatic burette
Page 210 and 211: Automatic BurettesCompact automatic
Page 212 and 213: Spare Burette StopcocksSpare burett
Page 214 and 215: Burette AccessoriesBurette clampAll
Page 216 and 217: Volumetric InstrumentsBRAND onlineV
Page 218 and 219: Temperatureand DensityMeasurementFo
Page 220 and 221: Oxygen flasksDensity bottles,uncali
Page 222 and 223: Sedimentation ConesASTM centrifuge
Page 226 and 227: HydrometersRange finder hydrometers
Page 228 and 229: HydrometersGeneral purpose alcoholo
Page 230 and 231: ThermometersThermometerBRAND thermo
Page 232 and 233: ThermometersSolid-stem thermometers
Page 234 and 235: Thermometers1Precision Anschutz the
Page 236 and 237: ThermometersASTM thermometersASTMNo
Page 238 and 239: Temperature and DensityBRAND online
Page 240 and 241: ClinicalLaboratoryClinical laborato
Page 242 and 243: JarsJar with snap-on lidJar PS, sna
Page 244 and 245: Disposal Bags · ContainersDisposal
Page 246 and 247: Culture TubesCentrifuge TubesCultur
Page 248 and 249: TubesSample tubesPS, transparent.Cl
Page 250 and 251: Pasteur PipettesDropping PipettesPa
Page 252 and 253: Disposable MicropipettesDisposable
Page 254 and 255: Counting ChambersCounting ChambersC
Page 256 and 257: Counting ChambersThomadouble ruling
Page 258 and 259: Haematology · MicroscopyHaemacytom
Page 260 and 261: MicroscopyStaining trough, CoplinSo
Page 262 and 263: Clinical LaboratoryBRAND onlineClin
Page 264 and 265: GeneralLaboratorySuppliesSample pre
Page 266 and 267: Erlenmeyer Flasks · BeakersErlenme
Page 268 and 269: BeakersGraduated beakers with handl
Page 270 and 271: Watch GlassesEvaporating DishesWatc
Page 272 and 273: Centrifuge tubes · Test tubesCentr
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FunnelsFunnelsfluted interiorPP. Fo
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Separating funnelsSeparating funnel
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Filter FlasksRubber sleevesRubber (
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DesiccatorsDesiccatorsPC lid. PP ba
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Gas Wash BottlesWash bottle head wi
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TubingTubingPVC. Particularly high-
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Tubing ConnectorsTubing Connectors
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StopcocksStraight-bore stopcockswit
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Sockets · StoppersSocketswith grip
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StirrersStirrersGood operating char
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Magnetic Stirring BarsCylindrical,
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Magnetic Stirring BarsMagnetic Stir
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Forceps · ScoopsForcepsPMP. Pointe
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BottlesLaboratory bottlesBoro 3.3.
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BottlesWide-mouth bottlesPE-LD, fle
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BottlesWash bottleswithout venting
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ContainersAtomizersPE-HD. By turnin
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ContainersTrays (photographic trays
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Draining RackPipette Trays and Stan
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CleaningCleaningManual Detergents f
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DetergentsMucocit ® -TInstrument d
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General LaboratoryBRAND onlineGener
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TechnicalInformationQuality Managem
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PrecisionPrecisionWhat do "Error Li
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Monitoring ofMeasuring InstrumentsM
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Calculations3. Calculation of the s
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Easy Calibration TechniqueEasy Cali
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Calibration CertificatesDetailed Ca
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Monitoring ofMeasuring InstrumentsD
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Materials: GlassLaboratory GlassGen
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Materials: GlassMechanical Resistan
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Materials: PlasticPVC Vinyl chlorid
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Materials: PlasticBiological Proper
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Materials: PlasticThe data for the
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Materials: PlasticThe data for the
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Cleaning (Basics)Gentle CleaningFor
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IndexGeneral Terms and ConditionsAl
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Alphabetical IndexDisposablesfilter
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Alphabetical IndexSedimentationcone
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Number IndexCat. No.Page4020 38 - 4
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© Patrick Escudero/hemis.fr/Getty
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Liquid Handling

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