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  • Retsch : Molinos de corte : SM 200 : Informaciones & Descarga
    sämtliche chemische und physikalische Analysenmethoden ist es notwendig die Analysenprobe in einem möglichst hohen Grad zu homogenisieren und sie auf eine definierte Feinheit zu zerkleinern Hierbei erstreckt sich die notwendige Probenvorbereitung auf alle Proben der unterschiedlichen Matrizes Die Probenvorbereitung hat somit neben der Probenahme einen entscheidenden Einfluss auf das Analysenendergebnis denn Probenvorbereitungsfehler können das Endergebnis um mehr als 50 beeinflussen Toxic substances in our daily life Plastic is an inherent part of our everyday lives it is used in a huge variety of things such as for example packaging furniture clothing or electronic devices Though the utility of the material is undoubted consumers are increasingly unsettled by recurring news about hazardous substances detected in plastics Substances such as plasticizers which are not firmly bound in the material are absorbed via the skin and can influence the hormonal balance Plasticizers contained in food packaging for example penetrate into the food and thus into the human body when the food is eaten Plasticizers in toys are a particularly serious problem children tend to take toys into their mouths thus absorbing the dangerous chemicals Equally hazardous are polycyclic aromatic hydrocarbons PAH The family of PAH comprises more than 100 compounds most of which have been found to be carcinogenic Outdoor clothing Pure nature or traces of poison Outdoor activities such as hiking biking or climbing are very popular As a result the textile industry offers a huge variety of functional outdoor clothing made from synthetic high tech materials which are wind and waterproof as well as breathable In 2013 Greenpeace published a study proving that hazardous substances such as perfluorinated and polyfluorinated chemicals PFC were used in weatherproof clothing as protection against water or dirt This article describes the sample preparation process with cutting mills and cryogenic mills of high tech fibres The effect of grinding tools on metal contamination Reliable and accurate analysis results can only be guaranteed by reproducible sample preparation This consists of transforming a laboratory sample into a representative part sample with homogeneous analytical fineness Retsch offers a comprehensive range of the most modern mills and crushers for coarse fine and ultra fine size reduction of almost any material The product range also comprises a wide choice of grinding tools and accessories which helps to ensure contamination free preparation of a great variety of sample materials The selection of the correct grinding tool depends on the sample material and the subsequent method of analysis Different grinding tools have different characteristics such as required energy input hardness or wear resistance Renewable energies on the rise Sample preparation of vegetable based raw materials with laboratory mills Thanks to the increasing usage of biomass as a source of energy the analysis of these materials in the context of R D and quality control gains importance too Due to the complex properties of plant materials adequate sample preparation can be rather a challenge Down to the bone Use of laboratory grinders for size reduction of human bones and bioceramics Bone implants and substances for bone regeneration are used in surgery to replace degenerated bone material by implants or to re build it with specific substances The material used in implants varies from autogeneic supplied by the patient through allogeneic supplied by a donor bones to replacement materials such as hydroxylapatite HA and tricalcium phosphate TCP Bovine bones and corals are used in conjunction with synthetically produced foamed materials to form 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 Quality control of cement Quality control is an important aspect of cement production Sample preparation is an essential part of it because only a representative and reproducible processing of the sample material ensures reliable and meaningful analysis results RETSCH offers a range of instruments for dividing crushing grinding and sizing all materials which are involved in the production process of cement including secondary fuels To ensure the right choice of instrument for the right sample material Retsch offers free of charge sample testing in application laboratories all over the world Elemental analysers based on combustion technology are a useful addition to XRF analysis for the quality control of cement and related products ensuring fast precise and reliable determination of carbon and sulphur With its offering of analyzers using resistance or induction furnaces or both ELTRA covers a wide range of applications for C and S determination in organic and inorganic samples The product range is ideally suited to the variety of analytical applications in a cement plant Scrap turned into raw materials End of life vehicles re used The EU directive 2000 53 EG stipulates that as of 2015 95 of the weight of a car that has reached the end of its life span have to be recycled The work of ARN is strongly focused on this objective Together with partner companies they make sure that old cars are processed in an environmentally compliant way The recycling chain begins with the companies that dismantle the car and remove raw materials and liquids Waste management companies collect these materials and deliver them to the processing companies who reuse the materials in accordance with high production standards Powerful Cutting Mill The SM 300 excels especially in the tough jobs where other cutting mills fail It has a freely selectable speed range from 700 to 3 000 rpm with high torque The mill is convenient to operate and easy to clean Reliable and extremely

    Original URL path: http://www.retsch.es/es/productos/molienda/molinos-de-corte/sm-200/informaciones-descarga/ (2015-09-25)
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  • Retsch : Molinos de corte : SM 300 : Funcionamiento & características
    selección de tamices de fondo tolvas y colectores se puede adaptar el SM 300 a los requerimientos de una gran variedad de aplicaciones Ejemplos de aplicación polímeros alimentos cables cartón combustibles derivados componentes electrónicos cuero escorias de aluminio especias forrajes goma huesos juguetes de plástico lignito madera metales no férreos mezclas de materiales paja papel películas pellets de piensos plásticos plantas preformas de PET productos farmaceúticos residuos resinas textiles Ventajas Trituración potente gracias al motor de 3 kW con gran fuerza de arrastre y tecnología RES Velocidad regulable de 700 a 3 000 rpm para una perfecta adaptación al material Efecto de corte optimizado por los listones de corte dobles Limpieza súper rápida gracias a la tolva abatible con superficies completamente lisas y el rotor de quita y pon Granulometría final seleccionable mediante tamices de fondo con aberturas de 0 25 20 mm Amplia gama de accesorios que incluye tolvas recipientes colectores rotores y tamices Alto estándar de seguridad gracias al motor autofrenante cierre central chequeo de seguridad electrónico y soporte 18 cutting events per rotation with parallel section rotor Características Aplicación reducción de tamaño por corte Campos de aplicación agricultura alimentos biología ingeniería electrónica medicina farmacia medio ambiente reciclaje química plásticos Tipo de material blando semiduro tenaz elástico fibroso Principio de molienda cizalla corte Granulometría inicial Granulometría final 0 25 20 mm Velocidad a 50 Hz 60 Hz 700 3000 min 1 Velocidad periférica del rotor 4 7 20 3 m s Diámetro del rotor 129 5 mm Tipos de rotor parallel section rotor 6 disc rotor V rotor Tipos de tolvas universal para material oblongo Material de las herramientas de molienda acero inoxidable acero para molienda libre de metales pesados carburo de tungsteno Tamaños de tamiz aberturas trapezoidales 0 25 0 50 0 75 1 00 1 50

    Original URL path: http://www.retsch.es/es/productos/molienda/molinos-de-corte/sm-300/ (2015-09-25)
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  • Retsch : Molinos de corte : SM 300 : Informaciones & Descarga
    Thermoplastic en pdf Haga una selección pdf Inglés 445 KB 10410 wood en pdf Haga una selección pdf Inglés 37 KB 11348 wood en pdf Haga una selección pdf Inglés 552 KB 10310 toys en pdf Haga una selección pdf Inglés 39 KB Informes técnicos 23 Tan fina como sea necesario Para el análisis de muestras sólidas existe una gran variedad de métodos entre los que pueden mencionarse la AAS ICP NIR y FRX Todos estos métodos tienen algo en común y es que la muestra a analizar deber ser homogeneizada y tener una granulometría determinada que variará en función del método analítico empleado La homogeneización y reducción de la muestra a la granulometría indicada se realiza normalmente con trituradoras y molinos de laboratorio adecuados para cada caso Preparación de muestras altamente heterogéneas para el control de calidad El agotamiento de los recursos y el aumento del precio de los combustibles primarios tales como el petróleo el gas o el carbón han obligado a la industria del cemento a buscar fuentes alternativas de energía Otro factor contribuyente es sin duda el comercio de emisiones que hace todavía más rentable el cambio a fuentes de energía con un balance neutro de CO2 en su mayoría combustibles no fósiles En los últimos años se ha registrado un incremento en el uso de fuentes de energía alternativas especialmente por aquellas industrias con una alta demanda energética En consecuencia viene ganando cada vez más importancia el empleo de combustibles secundarios o alternativos que en su mayoría son extraídos de residuos urbanos e industriales es decir residuos urbanos que no han podido ser recuperados ni reciclados La detección de micotoxinas en nueces Trituración primaria y fina Outdoorbekleidung Natur pur oder dem Gift auf der Spur Freizeitaktivitäten in der Natur wie Wandern Radfahren oder Klettern erfreuen sich großer Beliebtheit Die Textilindustrie bietet hierfür eine große Bandbreite an Funktionskleidung aus synthetischen High Tech Materialien die in der Regel wind und wasserfest sind sowie atmungsaktiv Wie Greenpeace in einer Studie von 2013 1 nachweisen konnte finden sich in wetterfesten Textilien immer wieder Gefahrstoffe wie per oder polyfluorierte Chemikalien PFC welche z B zum Schutz vor Wasser und Schmutz in die Kleidung eingearbeitet werden Probenvorbereitung für die Analyse von PET Verpackungen PET Flaschen sind als leichte und stabile Getränkeverpackung beliebt und weit verbreitet Mineralwasser und andere Getränke in diesen Flaschen können jedoch Spuren der gesundheitsschädlichen Verbindung Acetaldehyd enthalten Der Stoff wirkt sich schon in geringen Spuren negativ auf die Geschmacksqualität aus Zur Qualitätssicherung sind daher für Verpackungshersteller und Getränkeabfüller aufwändige quantitative Prüfverfahren erforderlich Da Acetaldehyd eine leicht flüchtige Verbindung ist muss eine thermische Belastung der PET Probe im Vorfeld der Analyse in jedem Fall verhindert werden Die Kryogenvermahlung bei 196 C ist eine Methode zur schonenden reproduzierbaren Zerkleinerung elastischer Materialien Das Verfahren eignet sich für die Probenvorbereitung im Rahmen chromatographischer Routinekontrollen im zertifizierten Prüflabor Repräsentative Probenvorbereitung im Umweltlabor Die Vermeidung von Umweltverschmutzung ist eines der zentralen Themen in den Industriegesellschaften des 21 Jahrhunderts Eines der wichtigsten Instrumente in diesem Zusammenhang ist die regelmäßige Kontrolle mit modernen analytischen Methoden Neben Luft und Wasseranalytik stehen Altlastensanierungen und Deklarationsanalysen ebenso im Fokus wie die Analytik von Boden Bauschutt Sedimenten Altholz Sekundärbrennstoffen u v m Für nahezu sämtliche chemische und physikalische Analysenmethoden ist es notwendig die Analysenprobe in einem möglichst hohen Grad zu homogenisieren und sie auf eine definierte Feinheit zu zerkleinern Hierbei erstreckt sich die notwendige Probenvorbereitung auf alle Proben der unterschiedlichen Matrizes Die Probenvorbereitung hat somit neben der Probenahme einen entscheidenden Einfluss auf das Analysenendergebnis denn Probenvorbereitungsfehler können das Endergebnis um mehr als 50 beeinflussen What s in the fish Effective size reduction by cutting The homogenization of fish is a challenge scales skin and bones are fairly resistant to size reduction so that the sample still contains some larger pieces after grinding in most mills A high fat content of the fish makes the process even more difficult as fatty particles stick together to form large lumps which block the mill and keep the sample inhomogeneous Sample preparation of PET preforms for subsequent analytics In the beverage industry plastic bottles or rather their performs are analyzed for their acetaldehyde content to prevent any health risk for consumers The acetaldehyde must be extracted from the preforms prior to analysis To ensure correct results the bottles first have to be crushed and homogenized by laboratory mills Care must be taken that the volatile substance acetaldehyde does not escape during the process due to heat build up inside the grinding chamber To preserve the acetaldehyde part of the sample preparation is carried out under cryogenic conditions Toxic substances in our daily life Plastic is an inherent part of our everyday lives it is used in a huge variety of things such as for example packaging furniture clothing or electronic devices Though the utility of the material is undoubted consumers are increasingly unsettled by recurring news about hazardous substances detected in plastics Substances such as plasticizers which are not firmly bound in the material are absorbed via the skin and can influence the hormonal balance Plasticizers contained in food packaging for example penetrate into the food and thus into the human body when the food is eaten Plasticizers in toys are a particularly serious problem children tend to take toys into their mouths thus absorbing the dangerous chemicals Equally hazardous are polycyclic aromatic hydrocarbons PAH The family of PAH comprises more than 100 compounds most of which have been found to be carcinogenic Outdoor clothing Pure nature or traces of poison Outdoor activities such as hiking biking or climbing are very popular As a result the textile industry offers a huge variety of functional outdoor clothing made from synthetic high tech materials which are wind and waterproof as well as breathable In 2013 Greenpeace published a study proving that hazardous substances such as perfluorinated and polyfluorinated chemicals PFC were used in weatherproof clothing as protection against water or dirt This article describes the sample preparation process with cutting mills and cryogenic mills of high

    Original URL path: http://www.retsch.es/es/productos/molienda/molinos-de-corte/sm-300/informaciones-descarga/ (2015-09-25)
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  • Retsch : Molino de cuchillas : GM 200 : Funcionamiento & características
    y aplicaciones de análisis ofreciendo un rendimiento muy superior al de los picatodos caseros usuales con una gama de aplicaciones mucho mayor Ejemplos de aplicación grageas barras de muesli carne cereales dulces embutidos especias frutas secas jabón jamón lechuga nibs de cacao nueces pellets de piensos pescado plantas productos farmacéuticos productos ultracongelados queso semillas oleaginosas suplementos dietéticos vegetales Ventajas Trituración eficiente de hasta 700 ml de muestra gracias al potente motor de 900 W Un solo aparato para la trituración previa y la molienda fina efecto de corte en el modo de operación estándar de impacto en el modo con inversión de marcha y trituración primaria en el modo por intervalos Todas las partes en contacto con el material son autoclavables Perfecta adaptación al material gracias al rango de velocidad de 2 000 a 10 000 rpm libremente regulable en pasos de 500 rpm Reducción automática del volumen del recipiente gracias a la tapa de caída libre opcional Memoria para 3 rutinas SOP Recipientes de molienda en plástico en vidrio y en acero inoxidable Características Aplicación reducción de tamaño homogeneización y mezcla Campos de aplicación agricultura alimentos biología medicina farmacia Tipo de material blando semiduro elástico contiene agua grasa aceite seco fibroso Principio de molienda Corte Granulometría inicial 40 mm Granulometría final Carga cant material alimentado con tapa estándar 700 ml con tapa reductora de volumen 300 ml con tapa de caída libre 300 600 ml Volumen recipiente de molienda con tapa estándar 1000 ml con tapa reductora de volumen 500 ml con tapa de caída libre 400 800 ml Velocidad a 50 Hz 60 Hz digital 2 000 10 000 min 1 Material de las herramientas de molienda cuchillas acero inoxidable titanio cilindro PVDF recipiente plástico autoclavable plástico PP acero inoxidable vidrio Duración de la molienda digital 1 s

    Original URL path: http://www.retsch.es/es/productos/molienda/molino-de-cuchillas/gm-200/ (2015-09-25)
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  • Retsch : Molino de cuchillas : GM 200 : Informaciones & Descarga
    gerecht zu werden bietet sich der Einsatz von Messermühlen an From muesli to streaky bacon Complete homogenization of complex samples The diversity of foodstuffs with their often very different product properties represents a real challenge for food testing laboratories Before the actual analysis the sample materials which can vary strongly with regards to hardness and moisture need to be homogenized and reduced to a sufficiently small particle size RETSCH s GRINDOMIX knife mills are the ideal tools to meet the complex requirements of the sample preparation of food The model GM 200 has proven itself for the homogenization of small sample volumes of up to 700 ml For larger volumes RETSCH offers the GM 300 model with a grinding chamber volume of 5 000 ml Sample Preparation for HPLC Analysis of Confectionery Like all foodstuff confectionery is subjected to strict quality controls Parameters of interest are for example nutritional value moisture or fat content or the quantification of particular ingredients such as vitamins or alkaloids Typically chromatographic methods like High Performance Liquid Chromatography HPLC are used to analyze food samples Most analytical methods only require a few milligram or gram of sample the previous size reduction homogenization process ensures that the small analysis sample is representative of the entire laboratory sample thus allowing for reproducible results Moreover homogenized samples show a much better extraction behavior Detection of genetically modified organisms GMO in food and feed Genetic engineering opens up new possibilities in areas such as medical research development of alternative fuels or global food supply It is used to modify the characteristics of plants in order to increase the crop yield improve defense against predators pesticides or draught but also increase concentrations of essential vitamins However with regards to food the use of genetic engineering is a fairly controversial issue Moreover food and feed stuff are subject to rigorous quality control processes to prevent humans and animals from potential harm The effect of grinding tools on metal contamination Reliable and accurate analysis results can only be guaranteed by reproducible sample preparation This consists of transforming a laboratory sample into a representative part sample with homogeneous analytical fineness Retsch offers a comprehensive range of the most modern mills and crushers for coarse fine and ultra fine size reduction of almost any material The product range also comprises a wide choice of grinding tools and accessories which helps to ensure contamination free preparation of a great variety of sample materials The selection of the correct grinding tool depends on the sample material and the subsequent method of analysis Different grinding tools have different characteristics such as required energy input hardness or wear resistance Renewable energies on the rise Sample preparation of vegetable based raw materials with laboratory mills Thanks to the increasing usage of biomass as a source of energy the analysis of these materials in the context of R D and quality control gains importance too Due to the complex properties of plant materials adequate sample preparation can be rather a

    Original URL path: http://www.retsch.es/es/productos/molienda/molino-de-cuchillas/gm-200/informaciones-descarga/ (2015-09-25)
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  • Retsch : Molino de cuchillas : GM 300 : Funcionamiento & características
    los picatodos caseros usuales con una gama de aplicaciones mucho mayor Ejemplos de aplicación grageas barras de muesli carne cereales dulces embutidos especias frutas secas jabón jamón lechuga nibs de cacao nueces pellets de piensos pescado plantas productos farmacéuticos productos ultracongelados queso semillas oleaginosas suplementos dietéticos vegetales Ventajas Trituración eficiente de hasta 4 500 ml de muestra gracias al potente motor de 1 1 kW potencia de punta 3 kW Un solo aparato para la trituración previa y la molienda fina efecto de corte en el modo de operación estándar de impacto en el modo con inversión de marcha y trituración primaria en el modo por intervalos Todas las partes en contacto con el material son autoclavables Perfecta adaptación al material gracias al rango de velocidad de 500 a 4 000 rpm libremente regulable en pasos de 100 rpm Reducción automática del volumen del recipiente gracias a la tapa de caída libre opcional Memoria para 10 rutinas SOP Recipientes de molienda en plástico y en acero inoxidable Características Aplicación reducción de tamaño homogeneización y mezcla Campos de aplicación agricultura alimentos biología medicina farmacia Tipo de material blando semiduro elástico contiene agua grasa aceite seco fibroso Principio de molienda Corte Granulometría inicial 130 mm Granulometría final Carga cant material alimentado con tapa estándar 4 500 ml con tapa de caída libre 4 000 ml Volumen recipiente de molienda 5000 ml reducción con tapa de caída libre Ajuste de la velocidad digital 500 4000 rpm Molienda por vía seca sí Molienda por vía húmeda sí Material de las herramientas de molienda recipiente de molienda plástico autoclavable acero inox 1 4435 cuchilla acero inox 1 4034 soporte de la cuchilla PVDF juntas EPDM FKM Duración de la molienda digital 5 s 3 min Operación por intervalos sí Tiempo de ejecución regulable Rutinas SOP

    Original URL path: http://www.retsch.es/es/productos/molienda/molino-de-cuchillas/gm-300/ (2015-09-25)
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  • Retsch : Molino de cuchillas : GM 300 : Informaciones & Descarga
    an From muesli to streaky bacon Complete homogenization of complex samples The diversity of foodstuffs with their often very different product properties represents a real challenge for food testing laboratories Before the actual analysis the sample materials which can vary strongly with regards to hardness and moisture need to be homogenized and reduced to a sufficiently small particle size RETSCH s GRINDOMIX knife mills are the ideal tools to meet the complex requirements of the sample preparation of food The model GM 200 has proven itself for the homogenization of small sample volumes of up to 700 ml For larger volumes RETSCH offers the GM 300 model with a grinding chamber volume of 5 000 ml Sample Preparation for HPLC Analysis of Confectionery Like all foodstuff confectionery is subjected to strict quality controls Parameters of interest are for example nutritional value moisture or fat content or the quantification of particular ingredients such as vitamins or alkaloids Typically chromatographic methods like High Performance Liquid Chromatography HPLC are used to analyze food samples Most analytical methods only require a few milligram or gram of sample the previous size reduction homogenization process ensures that the small analysis sample is representative of the entire laboratory sample thus allowing for reproducible results Moreover homogenized samples show a much better extraction behavior Detection of genetically modified organisms GMO in food and feed Genetic engineering opens up new possibilities in areas such as medical research development of alternative fuels or global food supply It is used to modify the characteristics of plants in order to increase the crop yield improve defense against predators pesticides or draught but also increase concentrations of essential vitamins However with regards to food the use of genetic engineering is a fairly controversial issue Moreover food and feed stuff are subject to rigorous quality control processes to prevent humans and animals from potential harm The effect of grinding tools on metal contamination Reliable and accurate analysis results can only be guaranteed by reproducible sample preparation This consists of transforming a laboratory sample into a representative part sample with homogeneous analytical fineness Retsch offers a comprehensive range of the most modern mills and crushers for coarse fine and ultra fine size reduction of almost any material The product range also comprises a wide choice of grinding tools and accessories which helps to ensure contamination free preparation of a great variety of sample materials The selection of the correct grinding tool depends on the sample material and the subsequent method of analysis Different grinding tools have different characteristics such as required energy input hardness or wear resistance Renewable energies on the rise Sample preparation of vegetable based raw materials with laboratory mills Thanks to the increasing usage of biomass as a source of energy the analysis of these materials in the context of R D and quality control gains importance too Due to the complex properties of plant materials adequate sample preparation can be rather a challenge Sample Preparation in the Pharmaceutical Industry In the

    Original URL path: http://www.retsch.es/es/productos/molienda/molino-de-cuchillas/gm-300/informaciones-descarga/ (2015-09-25)
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  • Retsch : Molinos de mortero : RM 200 : Funcionamiento & características
    es muy fácil de limpiar y se ofrece en diferentes materiales de manera que el RM 200 puede adaptarse óptimamente a las aplicaciones individuales Ejemplos de aplicación alimentos células de levadura carbón cenizas clínker coque drogas escorias especias nibs de cacao nueces plantas productos farmacéuticos productos químicos sales semillas oleaginosas silicatos suelos sustancias homeopáticas tejas Ventajas Molienda en seco en húmedo y criogénica Ajuste por escala de la presión de la mano y del rascador que garantiza resultados reproducibles Cámara de molienda de cierre hermético con ventanilla Cambio de la mano y del mortero fácil y sin herramientas Indicador de carga Presión ajustable de la mano y del rascador amplia selección de materiales que permite la preparación de muestras para cualquier tipo de análisis Rascador en 3 materiales diferentes PU madera de haya y teflón Pestle speed 100 rpm Características Aplicación molienda mezcla y trituración en seco y húmedo Campos de aplicación agricultura alimentos biología geología metalurgía materiales de construcción medicina farmacia química plásticos vidrio cerámica Tipo de material blando duro frágil pastoso Principio de molienda presión fricción Granulometría inicial Granulometría final Carga cant material alimentado 10 190 ml Volumen recipiente de molienda 700 ml Velocidad a 50 Hz 60 Hz 100 min 1 Ajuste de la velocidad Ajuste de presión de la mano de mort Vertical con regulador escala horizontal con regulador control visual acústico Ajuste de la presión del rascador ajustando el regulador control visual Material de las herramientas de molienda acero templado acero inoxidable carburo de tungsteno ágata corindón sinterizado óxido de circonio porcelana dura Duración de la molienda digital 1 99 min operación continua Motor Motor monofásico con condensador auxiliar Conexión eléctrica voltajes diferentes Alimentación de red monofásica Tipo de protección IP 53 Consumo de potencia 250 W 230 V 50 Hz 290 W 120 V

    Original URL path: http://www.retsch.es/es/productos/molienda/molinos-de-mortero/rm-200/ (2015-09-25)
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