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        1. 上海乾思生物科技有限公司
          中級會員 | 第16年

          18916423352

          細胞庫
          優(yōu)勢品牌
          Encapsula NanoSciences Quidel Bioporto Salimetrics Research Products International Corp Quanta BioDesign Peninsula Laboratories International Golden West Diagnostics Ocean NanoTech HaemoScan affinitybiologicals Cytodiagnostics Innovagen AB CLIAwaived Svar Abbexa ABMgood AffinityImmuno AGScientific AHF analysentechnik AG Alomone 英國Antibodies AstaTech Avidity Badrilla BioAcademia Biomatik Biosynth BioTeZ Biotrend Calbiotech CaroteNature Cell Sciences Click Chemistry Tools Cohesion Biosciences CordenPharma Cosmo Bio Creative Biomart Crystal Chem Crystalgen Diagnovum DiaMetra Dianova Diatheva Eagle Manufacturing Echelon Biosciences Edgebio Emfret Epoch Life Science Equitech-Bio Eramask Euro Diagnostica Exocell Fine Science Tools GenwayBio Giotto Biotech Glen Research Glycosynth Gold Biotechnology Golden West Biologicals Haemtech(HTI) Herolab IHC WORLD ImmuChrom GmbH Immunostep Immunotools Immunovision INCELL Corporation Innovative Research Innovrsrch(IRA) Insitus Iris Biotech GmbH Isosep IST Engineering Inc J.G. Finneran Kainos Kamiya Biomedical Labor Diagnostika Nord Larodan Laysanbio Lc laboratories Lee BioSolutions LGC Biosearch Technologies Lifecore List Labs lumiprobe Macrocyclics Medix Biochemica Meridian Life Science Microbix Milenia Biotec Moscerdam Mybiosource Nanoimmunotech Nanoprobes Neuro Probe Paratechs Physitemp Polypure Polysciences Probetex Progen ProScience Inc ProSpec QAbio Qorpak Quanta BioSciences QuickZyme RevMAb Biosciences SCHMIDT BioMedTech Seven Hills Foundation Smartox Biotechnology Spherotech Surgimax Swant SYSY Ted Pella Torpac Trilink USBio VIDIA Ltd ViroStat Virusys VP-scientific Xcessbio XENOMETRIX Zeptometrix ZYTOVISION
          自產(chǎn)ELISA試劑盒,試劑盒
          進口ELISA試劑盒
          人細胞,人細胞系,人細胞株
          3h biomedical,3H Biomedical AB,3hbiomedical,3-M Company,4adi,4rtilab,5 prime,5prime a & g pharmaceuticals,A&D Weighing,Aalto Scientific,Aalto Scientific ltd,Aalto Scientific,ltd.,aaltobioreagents,aaltoscientific,aat bioquest AAT Bioquest Inc,AB Biolabs,ab peptides,AB Sciex,Abaxis,Abazyme,Abberior,abbexa abbiotec,Abbkine,abbomax,Abbott Molecular,abcam,ABclonal,ABclonal Inc.,abcore-inc abcr GmbH,abcrGmbH,abcysonline,ABD,ABD Bioquest,Inc,abd serotec,ab-direct,abdserotec Abeomics,abfrontier,abgab,abgene,abgent,ABI Applied Biosystems,abiocode,abionline Abkem Iberia,ABL,Inc,Abliance,abm Inc.,abmart,abmgood,Abmole,Abmole Bioscience Inc. abnova,Abraxis,Absolute Antibody,ABT Beads,abt beads technologies,ABTbeads,abvision,Abways abzoom,academy biomed,academy bio-medical,acanthus research,acanthusresearch,ACC,accelagen,Accelagen inc. Access Biologicals,LLC,accessbiologicals,acciusa,accu-chek,AccuDiag Allergy,AccuDiag Anemia,AccuDiag Autoimmune Diseases,AccuDiag Bone Metabolism AccuDiag Thyroid,accumax accutase,Accumetrics,Accurate,accurate chemical,Accurate Wirecraft Company,accuratechemical,accustandard acdbio,Ace Glass,Ace Hose and Rubber Co,ACEA Biosciences,ACL Incorporated,ACME Microspheres Inc,ACMEmicrospheres,acris acris antibodies,Acris Antibodies GmbH,acris-antibodies,ACROBiosystems,acrometrix,acros,Acros Organics,ACT Test Panels LLC actc,actgene,active motif,activemotif,Adam Equipment,Inc,AddexBio,Addexbio Technologies,addgene ademtech,adg,ADI,ADInstruments,adipogen,Adolf Kuhner,adooq,Advance Tabco advanced immunochemical,advanced immunochemical inc,advanced targeting systems,Advansta,Advansta Inc.,Advansta,Inc,Advantech,Advent Electric Inc adventbio,advnt,advtechind,advy chemical,advy chemical Purified Proteins,advychemical Polyclonal Antisera,aesku,aetltd affiland,affinity,affinity biologicals,affinity bioreagent,Affinity BioReagents,Affinity BioReagents abr,Affinity Biosciences,affinitybiologicals AffinityBioReagents,AffinityImmuno,affix scientific,affixscientific,affymetrix,ag scientific,Agar Scientific,agarscientific agdia,Agela Technologies,agilent,Agilent Seahorse,agilent technologies,agilet,agilet solutions,agiletsolutions agrenvec,agrisera,AGRO-BIO,agscientific,ahdiagnostics,ahf,AHF analysentechnik,AHF analysentechnik AG Air Technology Solutions,Airgas Safety,Air-Tite,AJAX SCIENTIFIC LTD,AK Limited,Akro-Mils,ALA Scientfic,alamarblue Alba Bioscience,Alconox Inc,aldevron,alerchek,alere,Alexis,ALEXIS Biochemicals,Alfa Aesar Aline Biosciences,AlineBiosciences,All Foils Incorporated,Allcells,allele biotech,allelebiotech,allen-bradley,AllerMAbs
          大鼠細胞,大鼠細胞系
          細胞株,細胞系,傳代細胞
          抗體庫,小包裝,流式抗體
          SIGMA現(xiàn)貨,SIGMA代理

          離心機的日常保養(yǎng)—離心機“喘振”

          時間:2011/10/13閱讀:1027
          分享:
          乾思生物編輯整理:
          離心機“喘振”制冷離心式機組的離心機常發(fā)生“喘振”現(xiàn)象。制冷離心壓縮機原理是將大分子量的制冷劑通過高速運動將其積壓到小的空間進行壓縮,然后通過降溫進行冷凝。離心式冷水機組能量調(diào)節(jié)方式是靠調(diào)節(jié)高速轉動的導片角度來調(diào)節(jié)壓縮比   當供冷量下降的時候,導片做的功降低,壓縮出去的氣體壓力和吸入壓縮機的氣體壓力相近,導致氣體回流產(chǎn)生機械的強迫震動。(也稱“喘振”)喘振會造成機械部件的損壞。離心機的發(fā)展離心機是將樣品進行分離的儀器,廣泛應用于生物醫(yī)學、石油化工、農(nóng)業(yè)、食品衛(wèi)生等領域,它利用不同物質(zhì)在離心力場中沉淀速度的差異,實現(xiàn)樣品的分析分離。離心機自問世以來,歷經(jīng)低速、調(diào)整、超速的變遷,其進展主要體現(xiàn)在離心設備和離心技術兩方面,二者相輔相成。從轉速看,臺式離心機基本屬于低速、高速離心機的范疇,因此具有低速和高速離心機的技術特點,其結構主要由電機驅(qū)動系統(tǒng)、制冷系統(tǒng)、機械系統(tǒng)、轉頭和系統(tǒng)控制等幾部分組成,與落地式離心機相比只不過是尺寸和容量小一點罷了。通用臺式離心機的發(fā)展已經(jīng)模糊了低速、高速、微量和大容量離心機的界線,眾多的轉頭為科研人員提供相當廣泛的應用范圍,成為科研實驗室機型,如美國的Sorvall的ST2l,德國 Heraeus新機型 Biofuge Stratos等。

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