化工儀器網(wǎng)>產(chǎn)品展廳>行業(yè)專(zhuān)用儀器及設(shè)備>煤炭行業(yè)專(zhuān)用儀器>量熱儀(熱量計(jì))> 美國(guó)833型VPO分子量測(cè)定儀
美國(guó)833型VPO分子量測(cè)定儀
- 公司名稱(chēng) 北京泰亞賽??萍及l(fā)展有限責(zé)任公司
- 品牌
- 型號(hào)
- 產(chǎn)地
- 廠商性質(zhì) 經(jīng)銷(xiāo)商
- 更新時(shí)間 2018/5/16 12:01:16
- 訪問(wèn)次數(shù) 1316
聯(lián)系我們時(shí)請(qǐng)說(shuō)明是化工儀器網(wǎng)上看到的信息,謝謝!
無(wú)損檢測(cè)、電工儀表、氣體檢測(cè)、工程物探、實(shí)驗(yàn)室儀器、水質(zhì)檢測(cè)等產(chǎn)品。
Vapor Pressure Osmometer
For the Determination of NumberAverage Molecular Weight
The Model 833 Vapor Pressure Osmometeris an effective, easy to use tool for thedetermination of number average molecularweights of any non-volatile solute in the rangeof 100-25,000 Dalton.
Principles of Operation
The vapor pressure osmometer operates onthe principle of differential vapor pressurebetween a pure solvent and a solution. Twocarefully matched thermistors are placed in achamber saturated with solvent vapor. Whensolvent is placed on both thermistors, theyassume the same temperature. If a solution isplaced on one of the thermistors,condensation heats the thermistor until thevapor pressure is raised to that of the puresolvent. The change in temperature causes aresistance change in the thermistor. Thischange in resistance is measured by asensitive bridge circuit and displayed on apanel meter, strip chart recorder and/orcomputer terminal. A calibration curve relatesthe change in resistance to the molalconcentration of the solution.
The Model 833 VPO incorporates manyimprovements over other designs to simplifyand improve molecular weight determinations.The cell and thermistor geometry are designedto minimize dilution of the sample by solventcondensation. This results in much slower"fall-off" and allows a much longer timewindow for readings. The syringes on theModel 833 are mechanically driven to insuremore precise fluid delivery and areindependently heated to minimize anyequilibrium upset when introducing sample.This results in a faster equilibration time(typically 2-5 minutes), better reproducibilityand greatly reduced cycle time per sample
The thermistor design greatly improvesreproducibility between users and removes the"technique" variable of other osmometers.
Specifications:
Minimum Conc : 5 x 10-5 mol/L (toluene) 2.5 x 10-4 mol/L (water)
MW Range: 100-25,000 Dalton (toluene) 100-5,000 Dalton (water)
Temp. Range: Ambient - 130oC (sub-ambient with cooled liquid circulation)
Cell Current Range: 5, 20, 100 uA
Response Time: 2 - 5 minutes
Sample Volume: 0.25ml
Power Requirements: 115/220V, 50/60 Hz, 1A
Dimensions: Controller 8.5"L x 6.5"H x 9.25"D Cell 9.1"L x 10.6"H x 9.1"D
Weight: Controller: 8 lbs., Cell: 19 lbs.
Recorder Output: 0-200 mV
Solvent Compatibility: Toluene, benzene, chloroform,
dichloroethane, methylene chloride,
acetone, dimethylformamide,
pyridine and water
Ordering Information
JI833-100-00 - Model 833 Vapor PressureOsmometer - Includes controller, measuringcell, associated cables and operation manual.
JI503-020-01 - Strip Chart Recorder - Includescable, power cord, paper and operation manual.
優(yōu)勢(shì)產(chǎn)品報(bào)價(jià)系統(tǒng)請(qǐng)索取
產(chǎn)品:盛
公司:-274
號(hào):
現(xiàn)在掃描泰亞賽福二維碼并領(lǐng)取積分卡,即可免費(fèi)獲得50元代金券
1.成單后按合同金額的1%積分(1積分=1.00元)
2.積分可以在商城兌換任何禮品或抵扣貨款
http://www.tayasaf.com/vs2/pp/hd500.asp
我們的優(yōu)勢(shì)產(chǎn)品:
卡爾德意志(德國(guó)KD)中國(guó)區(qū)總代理無(wú)損檢測(cè) :超聲波探傷、磁粉探傷、裂紋測(cè)深等系列產(chǎn)品線;
德國(guó)Fischer兩用測(cè)厚儀MPO;
水質(zhì):YSI-哈納-米克-哈希-奧利龍-優(yōu)特-羅威邦-百靈達(dá);
氣體:GMI-新宇宙-TIF;
工程物探:英國(guó)雷迪等優(yōu)勢(shì)產(chǎn)品;
*:MPO、RD8000PDL/PXL、RD7000SL、DC30、KING、MP-A2D、MP-A2L、MPO、DT-315N、DT-311N等產(chǎn)品大量現(xiàn)貨!
相關(guān)分類(lèi)
該廠商的其他產(chǎn)品
- 瑞士梅特勒ME204分析天平
- PMB53 英國(guó)ADAM艾德姆PMB53鹵素水分測(cè)定儀
- GT-6 英國(guó)Techne GT-6凝膠時(shí)間記錄儀
- 美國(guó)Zeltex手持式谷物分析儀zx-50
- 日本新寶SHIMPO現(xiàn)貨批發(fā)DT-315N高精度頻閃儀
- 德國(guó)E180H 德國(guó)ELMA超聲波清洗器德國(guó)艾爾瑪超聲波清洗機(jī)E180H全國(guó)代理
- LactoStar 德國(guó)蓋博乳品分析儀3510 LactoStar牛奶分析儀蓋博中國(guó)總代理
- L9/11/B180 德國(guó)納博熱馬弗爐L9/11/B180