Glass Test Tube with Screw Cap

Product Name: Glass Test Tube with Screw Cap Model NO.: HHK1026 Type: Test Tubes Capacity: 10ml Material: Glass Certification: CE, ISO Disposable: Disposable Flat: Screw Cap Trademark: Honhai Transport Package: Carton Package Specification: 10*100mm. 13*100mm16*150mm. 18*150mm, Origin: Shandong HS Code: 701790000 Product Description clear borosilicate glass plain neck and round bottom test tubeAtesttube,alsoknownasaculturetubeorsampletube,isacommonpieceoflaboratoryglasswareconsistingofafinger-likelengthofglassorclearplastictubing,openatthetop,usuallywitharoundedU-shapedbottom.Alargetesttubespecificallyforboilingliquidsiscalledaboilingtube.Testtubesareavailableinamultitudeoflengthsandwidths,typicallyfrom10to20mmwideand50to200mmlong.[1]Thetopoftenfeaturesaflaredliptoaidpouringoutthecontents;somesourcesconsiderthatthepresenceofalipiswhatdistinguishesatesttubefromaculturetube.[2]Atesttubehaseitheraflatbottom,aroundbottom,oraconicalbottom.Sometesttubesaremadetoacceptagroundglassstopperorascrewcap.Theyareoftenprovidedwithasmallgroundglassorwhiteglazeareanearthetopforlabellingwithapencil.Application:Testtubesarewidelyusedbychemiststohold,mix,orheatsmallquantitiesofsolidorliquidchemicals,especiallyforqualitativeexperimentsandassays.Theirroundbottomandstraightsidesminimizemasslosswhenpouring,makethemeasiertoclean,andallowconvenientmonitoringofthecontents.Thelong,narrowneckslowsdownthespreadingofvapoursandgasestotheenvironment.Atesttubefilledwithwaterandupturnedintoawater-filledbeakerisoftenusedtocapturegases,e.g.inelectrolysisdemonstrations.Culturetubesareoftenusedinbiologyforhandlingandculturingallkindsofliveorganisms,suchasmolds,bacteria,seedlings,plantcuttings,etc.;andinmedicineandforensicstostoresamplesofbloodorotherfluids.Atesttubewithastopperisoftenusedfortemporarystorageofchemicalorbiologicalsamples.Testtubesareusuallyheldinspecial-purposeracks,clamps,ortongs.Someracksforculturetubesaredesignedtoholdthetubesinanearlyhorizontalposition,soastomaximizethesurfaceoftheculturemediuminside.Testtubesaresometimesputtocasualusesoutsideoflabenvironments,e.g.asflowervases,glasswareforcertainweakshots,orcontainersforspices.Wherelargenumbersoftestsarerunoronlysmallamountsareavailablefortesting,orboth,microtiterplatesareoftenusedassmalltesttubes.Manufacture:Testtubesforphysicsandchemistryareusuallymadeofglassforbetterresistancetoheatandcorrosivechemicalsandlongerlife.Tubesmadefromexpansion-resistantglasses,suchasborosilicateglass,canbeplaceddirectlyoveraBunsenburnerflame.Culturetubesforbiologyareusuallymadeofclearplastic(suchaspolystyreneorpolypropylene)byinjectionmolding[3]andareoftendiscardedafteruse.Testtubesmaycomewithpreparedcontents.Forexample,abluetoptubeisatesttubeof5mlcontainingsodiumcitrateasananticoagulant,usedtocollectspecimensforcoagulationscreensandtestingforglucose-6-phosphatedehydrogenase.Test tube:Product description:We can produce any sizes according to request.Material: Neutral glass tube or borosilicate 3.3 glass tube.We can print logo and text on all type of test tube.Standard: ISO and YBB.Yearly output: 200 million.Normal sizes: (Outside Diameter*Length)6*50mm8*50mm10*75mm12*75mm13*100mm15*100mm15*125mm15*150mm16*100mm16*125mm16*150mm18*150mm