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  • Retsch : Home : Aplicaciones : Biología
    Haga una selección pdf Inglés 269 KB pdf Inglés 656 KB pdf Alemán 217 KB Some sample materials have properties which make size reduction at ambient temperature impossible If for example very elastic materials need to be ground or volatile components have to be preserved for further analysis it is essential to carry out cryogenic grinding The use of liquid nitrogen helps to embrittle the sample thus improving its breaking

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/dl_details/1/file/53e4b57f-7ecc-4b30-a038-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Biología
    Inglés 464 KB pdf Alemán 428 KB pdf Italiano 264 KB pdf Ruso 483 KB pdf Japonés 821 KB The detection of illegal drugs and pharmaceuticals is important in areas such as forensic science traffic or competitive sports Chemical substances can be detected in blood saliva urine and hair the latter having the advantage of storing the substances for a fairly long period depending on the hair length In addition

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  • Retsch : Home : Aplicaciones : Biología
    illegal drugs and pharmaceuticals plays a role in various fields for example in forensic science road traffic accidents in competitive sports or at the workplace Chemical substances can be detected in blood saliva urine and in hair Hair has the great advantage of storing the substances for a long period which means that detection is still possible several months after consumption of the drug In addition to the detection of

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  • Retsch : Home : Aplicaciones : Biología
    Inglés 600 KB pdf Alemán 607 KB pdf Italiano 530 KB pdf Japonés 759 KB For the size reduction of many materials it is more suitable to use a cryogenic mill than a laboratory mill which operates at room temperature The sample is embrittled by liquid nitrogen which improves its breaking behavior when submitted to impact pressure and friction moreover volatile components of the sample are preserved The RETSCH CryoMill

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  • Retsch : Home : Aplicaciones : Biología
    KB pdf Alemán 401 KB Cell disruption of bacteria yeast filamentous fungi or microalgae is a standard procedure in basic biological research applied biotechnology or medical research to get access to nucleic acids DNA RNA or cell proteins For the isolation of DNA or RNA usually less than 1 ml of cell material is needed For the extraction of proteins however larger amounts of cell suspension are required A very

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  • Retsch : Home : Aplicaciones : Biología
    Biología Biología Efficient Grinding at 196 C Descargar PDF Haga una selección pdf Inglés 198 KB pdf Alemán 2 MB RETSCH s New CryoMill for Safe and Reproducible Grinding with Liquid Nitrogen The CryoMill has been specially designed for cryogenic grinding The mill features an integrated cooling system which continually cools the grinding jar with liquid nitrogen before and during the grinding process Thus the sample is embrittled and volatile

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/dl_details/1/file/53e4b560-18f4-4b56-a963-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Biología
    una selección pdf Inglés 575 KB pdf Alemán 577 KB Cashmere wool is the best known precious wool It is won from the cashmere goat which originates from the high mountain region of the same name Due to its properties such as softness and warmth cashmere wool gains more and more popularity in the manufacture of clothing Genuine cashmere is won solely from the goat s downy hair and must

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  • Retsch : Home : Aplicaciones : Biología
    Descargar PDF Haga una selección pdf Inglés 201 KB Preparation at the Courtesy of the Staley Lab at the University of Chicago Harvest 2 liters of cells grown to mid to late log phase by spinning at 6 000g for 15 minutes Wash cells twice with chilled buffer AGK Estimate volume of cell pellet and add 0 4 volumes chilled AGK Vortex to make a thick cell suspension Add protease inhibitor cocktail to a final concentration of 1x Add the suspension dropwise into a 50 ml conical that is filled with liquid nitrogen using a pipette or a syringe fitted with a needle Leave a few seconds between drops so they freeze properly Refill the liquid nitrogen as necessary and remember to puncture the cap several times with a needle or it will explode The frozen pellets can then be stored at 80 C until you want to continue Milling the extract Before running the mill fill the canisters with some water no ball Running the canisters with the ball but without a solid sample will ruin the canister and run the mill at 30 Hz briefly to make sure the Teflon O ring in the canister is still creating

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