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切向流过滤：更简便、更快捷、更高效 当需要高效、经济地去除杂质且涉及大量样品时， 切向流过滤 (TFF) 可能是最佳选择。TFF 采用 过滤器 分离或隔离特定粒径的颗粒。不同于传统（或死端）过滤，切向流过滤允许流体循环穿过过滤器以产生压差，而不是强制流体通过。 这种 “切向”过滤 方式意味着样品平行流过过滤器，并通过储液器进行多次循环。小于孔径的颗粒可通过滤膜，形成滤液。 TFF也称为 错流过滤，包括微滤、纳滤和超滤。 切向流过滤的优势 使用 TFF，可避免较大颗粒在过滤器中堆积或结块，提...

滴定仪 为您提供一切定量技术中所需的滴定产品，从传统的玻璃器皿到自动滴定仪，包括试剂和配件。 VWR Chemicals Indicators - to monitor your reactions and titrations Chemical reactions and the status of them can be followed by changes in the colour of the indicators. We have a complete range of pH...

General Description of an Application Application Date: 05.03.2013 Page 1 of 5 Quantitative analysis of hydrogen peroxide Application Date: 05.03.2013 Page 2 of 5 Content Content .......................................................................

Micoelectronics Case Study NEED A manufacturer and leading supplier in the microelectronics industry asked VWR Custom Manufacturing Services to develop an amino acid solution for surface coating and polishing of silicon wafers used in production o...

in vivo delivery from study to gene therapy: overview considerations and challenges Webinar Tuesday June 18th 2019 18:00 to 19:00 CEST (Berlin Paris Madrid) PRESENTED IN ENGLISH REPLAY Email Alerts Free Registration Chat Area Certificate of attend...

TYGON Fuel and Lubricant (F-4040-A) Tubing Advantages: Specially formulated to transport hydrocarbons petroleum products and distillates. Suitable for gasoline kerosene heating oils cutting fluids and glycol-based coolants. Minimum extractability....

BioPharm Silicone Tubing Advantages: Ultra-smooth inner surface. Minimizes particle entrapment. Lower absorption; excellent biocompatibility; no leachable additives DOP or plasticizers. Odorless and nontoxic fungus resistant. No taste imparted to ...

BioPharm Plus Platinum-Cured Silicone Tubing Advantages: Up to three times the working life of other platinum silicone tubings Excellent biocompatibility; no leachable additives DOP or plasticizers; odorless and nontoxic fungus resistant; no taste...

NanoDrop One NanoDrop One/Onec UV-Vis Spectrophotometer Quantify and qualify DNA RNA and protein samples with only 1-2 µL and have full-spectral data in seconds using the Thermo Scientific™ NanoDrop™ One Microvolume UV-Vis spectrophotometer. Preve...

Gehaltsbestimmung von Ca und Mg in Mineralwässern Application date: 16.05.2013 page 1 from 7 Determination of the Chemical Oxygen Demand COD according to DIN 38 409 part 41 Application date: 16.05.2013 page 2 from 7 Use Determination of the chemic...

Cell culture Both autologous and allogeneic cells are obtained from donors utilizing methods including but not limited to apheresis aspirates and surgical biopsies. The donor cells of interest are processed to remove undesirable contaminants and p...

Automated Cell Imaging System Applications Cell counting and cell viability Assessing mitochondrial and cytotoxicity Measuring neurite outgrowth Cell differentiation Protein expression index Autophagy detection DNA damage assays Product Details Im...

imagination at work Application note 29-0642-77 AB Chromatography systems Purification of an N-terminal histidine-tagged protein using ÄKTA™ start ÄKTA start eliminates the hassles of manual protein purification handling such as loading large samp...

C-FLEX (50 A) Tubing Advantages: Physical properties similar to silicone with chemical compatibility of TYGON®. Inexpensive. Excellent biocompatibility. Smooth bore. Nontoxic no leachable plasticizers. Lower gas permeability than silicone. Use wit...

NORPRENE® (A 60 G) Tubing Advantages: Best choice for vacuum/pressure applications. Offers longest life with good flow consistency. Heat and ambient ozone resistant. Good resistance to acids and alkalies. Black color hides dirt and dust. Heat seal...

imagination at work Application note 29-0643-02 AB Chromatography systems Purification of antibodies using ÄKTA™ start and HiTrap™ Protein G HP column Polyclonal and monoclonal antibodies (MAbs) from many species can be purified using HiTrap Prote...