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  • Retsch : Home : Aplicaciones : Biología
    subsequent analysis If the particles are too coarse or non homogeneous the results of the analysis may turn out to be incorrect especially if there is only a very small amount of sample material which represents the total amount Most sample materials can be reduced to the required particle size at room temperature by the choice of a suitable crusher or grinder and the forces it produces impact pressure shearing cutting friction It may be necessary to carry out the size reduction process in two steps first pre crushing and then fine grinding Care must be taken that size reduction does not lead to a chemical modification or even decomposition of the material Moreover evaporation of the highly volatile substances as a consequence of temperature increase must be avoided Thus it is absolutely necessary to have sufficient knowledge about the material properties of the sample such as breaking behaviour or reaction to temperature changes to ensure a neutral to analysis size reduction Brittle materials like minerals salt or slag can be easily crushed by applying high mechanical stress through impact pressure or friction from outside However what can be done when the mechanical forces alone are not able to reduce

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/dl_details/1/file/53e4b553-7e08-4aaf-b7e1-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Biología
    by pressing yeast through small holes into a beaker filled with liquid nitrogen The holes 1 0mm Ø are punched into the bottom of a 50mL Falcon tube that contains 10 20mL of pelleted yeast obtained after centrifugal harvest of a 2L late log culture Pressure is employed manually by inserting the piston of a 60mL disposable syringe into the tube Yeast spaghettis treated with protease inhibitors can be stored

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/dl_details/1/file/53e4b54e-ba74-4858-aedd-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Biología
    produced batch is suspended because the analysis results were not within the relevant critical values But does the tested product really deviate from the specifications The quality control managers are convinced of this because modern analysis instruments provide results with very low tolerances The sample in question was tested several times and the result was confirmed The question is why the product does not match the specifications although the production

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/dl_details/1/file/53e4b564-87d0-48dc-b230-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Biología
    a basis for the regeneration of bone substance Various RETSCH mills are suitable for the preliminary and fine grinding of human bones as well as bioceramic materials Representative Analysis Results Require Adequate Sample Preparation A faultless and comparable analysis is closely linked to an accurate sample handling Only a sample representative of the initial material can provide meaningful analysis results Rotating dividers and rotary tube dividers are an important means to ensure the representativeness of a sample and thus the reproducibility of the analysis Correct sample handling consequently minimizes the probability of a production stop due to incorrect analysis results Thus correct sample handling is the key to effective quality control CryoMill Cryogenic grinding was never more convenient or efficient 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 properties and preventing volatile substances from escaping due to the frictional heat produced by the grinding process What hair reveals 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 to the tracing of drug abuse hair samples are also used for DNA analysis What Hair Reveals The detection of 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 drugs hair samples are also used for DNA analysis as well as for the analysis of heavy metals and minerals Using the CryoMill for samples with volatile substances 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 is not only the most modern and safest cryogenic mill in the market it also provides excellent grinding results Rapid and efficient disruption of yeast cells with the Mixer Mill MM 400 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

    Original URL path: http://www.retsch.es/es/aplicaciones/biologia/?no_cache=1 (2015-09-25)
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  • Retsch : Home : Aplicaciones : Química / Plásticos
    4 MB pdf Inglés 4 MB pdf Alemán 4 MB pdf Francés 4 MB pdf Italiano 3 MB pdf Ruso 2 MB pdf Japonés 4 MB VERDER SCIENTIFIC DIVISION SE PRESENTA La revolución nanométrica Molino de bolas nanométrico E max NUEVA en Verder Scientific Division ELTRA Análisis Elemental NUEVA en Verder Scientific Division Carbolite Leading Heat Technology Trituradora de Mandíbulas BB 50 El nuevo modelo de sobremesa CryoMill La nueva

    Original URL path: http://www.retsch.es/es/aplicaciones/quimica-plasticos/dl_details/1/file/53e4b571-052c-46bb-960d-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Química / Plásticos
    Japonés 3 MB pdf Checo 4 MB pdf Holandés 4 MB pdf Polaco 4 MB El arte de la trituración Tecnologías contemporáneas de trituración Trituradora de mandíbulas BB 200 Silicio y energía solar Molino ultracentrífugo ZM 200 Hay plásticos y plásticos Molino de corte SM 300 La madera una fuente de energía Molino de cuchillas GRINDOMIX GM 300 Son las barras de muesli realmente beneficiosas para la salud Molino de

    Original URL path: http://www.retsch.es/es/aplicaciones/quimica-plasticos/dl_details/1/file/53e4b566-bfa4-4f1c-b497-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Química / Plásticos
    NIR XRF Home Aplicaciones Química Plásticos Química Plásticos No 35 Descargar PDF Haga una selección pdf Español 5 MB pdf Inglés 5 MB pdf Alemán 5 MB pdf Francés 6 MB pdf Italiano 7 MB pdf Ruso 5 MB pdf Japonés 5 MB pdf Portugués 5 MB PRODUCTOS NUEVOS EN LA PRÁCTICA NOVEDADES RETSCH abre una filial en Rusia Solicite una oferta a través de www retsch es DVD actualizado con videos de los productos Análisis microbiológico de alimentos con el homogeneizador de palas PB 100 En la práctica Cargill Texturizing Solutions Francia Homogeneización perfecta con el GRINDOMIX GM 300 En la práctica Eurofins GfA Alemania Oficina Regional de Investigaciones Criminales de Dresde Alemania Molino de corte SM 300 Principio de trituración perfeccionado En la práctica Imperial College Londres Gran Bretaña Preparación de muestras con componentes volátiles con el CryoMill En la práctica Universidad Técnica de Brandenburgo BTU Cottbus Alemania Tamizado de polvos aglomerantes por chorro de aire con la AS 200 jet En la práctica Alpha Ceramics GmbH Aquisgrán Alemania Tamizado de grandes volúmenes con la AS 450 control En la práctica Oficina Regional de Geología y Minería para Renania Palatinado Alemania Nuevo analizador de partículas CAMSIZER XT Volver

    Original URL path: http://www.retsch.es/es/aplicaciones/quimica-plasticos/dl_details/1/file/53e4b563-90fc-49e6-b62c-636500000000/ (2015-09-25)
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  • Retsch : Home : Aplicaciones : Química / Plásticos
    5 MB pdf Japonés 5 MB pdf Checo 3 MB pdf Polaco 5 MB pdf Portugués 5 MB PRODUCTOS NUEVOS 09 WE ARE COOL El molino mezclador CryoMill es ideal para la molienda criogénica de plásticos materiales termosensibles y muestras con componentes volátiles WE ARE POWERFUL Gracias a su gran fuerza de arrastre y su velocidad variable el molino de corte SM 300 puede triturar los materiales más difíciles ofreciendo al mismo tiempo una limpieza rápida y fácil WE ARE SHARP El molino de cuchillas GM 300 tritura y homogeneiza de forma rápida y reproducible hasta 4 5 litros de muestras con un alto contenido de agua o grasa en una sola operación WE ARE STRONG La tamizadora AS 450 control con movimiento 3D soporta cargas de hasta 20 kg y se caracteriza por una excelente precisión de separación WE ARE FINE La tamizadora a chorro de aire AS 200 jet fue desarrollada para separar rápida y cuidadosamente materiales ligeros de hasta unos pocos micrómetros WE ARE FOCUSED Retsch Technology presenta el analizador de partículas CAMSIZER un aparato diseñado para medir materiales a granel con una granulometría de 30 μm a 30 mm Gane con RETSCH un viaje de aventura

    Original URL path: http://www.retsch.es/es/aplicaciones/quimica-plasticos/dl_details/1/file/53e4b561-8938-4469-9b92-636500000000/ (2015-09-25)
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