Is the Varispenser resistant to morpholine (tetrahydro-1,4-oxazine)?

Yes. Due to the hygroscopic properties of morpholine, please use the drying tube (4960 851.00). The drying tube should be filled with dried calcium carbonate.

Is it possible to dispense crude oil using Varispenser?

The Varispenser is chemically resistant to crude oil. Difficulties may be caused by the viscosity, depending on the composition and temperature of the crude oil. The Varispenser is intended for dispensing liquids with a maximum kinematic viscosity of 500 mm2/s . It is thus necessary to work extremely slowly, and more effort is required on the part of the user. Furthermore blockage of the Varispenser hoses and valves is observed very fast, thus an immediate cleaning is necessary.

Can the Varispenser be used to dispense methyl butyl ether?

Yes, the Varispenser can be used for this. Methyl butyl ether is highly flammable! Warning: follow safety information!

Can the Varispenser be used to dispense dibutylamine?

Dibutylamine is very similar to ammonia. The Varispenser is resistant to dibutylamine.

Can 0.1 n butylamine and ethyl acetate be used in the Varispenser?

Both 0,1 N butylamine and ethyl acetate were tested and can be used.

During the dispensing process, does the liquid come into contact with any metal components of the Varispenser?

Yes. The spring system of the spring-loaded platinum-iridium valve ball comes into contact with the liquid during dispensing.

I would like to distribute liquid agar onto petri dishes with the Varispenser. How hot can the agar be for this?

Varispensers are measurement devices for which the guaranteed accuracy, precision or error limits only apply in a restricted temperature range of 15 - 40 °C (conforming to DIN 12650). Applications with liquids outside this temperature range are not recoommended and can only be carried out at the user's own risk. At higher temperatures up to 60 °C the plastic materials fluorocarbon and polypropylene will be fully chemically resistant, but mechanically they will become slightly softer. When hot agar is aspirated out of the bottle, cooling will take place in the cold Varispenser. Since agar becomes much firmer at ca. 35 °C, blockage can easily occur. In any case immediate cleaning will be required, in particular of the valve.

Is it possible to use the Varispenser to dispense agarose gels at approx. 90 °C?

Varispensers are measurement devices for which the guaranteed accuracy, precision or error limits only apply in a restricted temperature range of 15 - 40 °C (conforming to DIN 12650). Heating the device to 90°C is not permitted and can only be carried out at the user's own risk.

Is it possible to autoclave the Varispenser attached to a full flask?

Yes, this is possible. Please mind the following precautions: The Varispenser is loosely screwed on the bottle, the volume setting knob is set to 20% of the nominal volume and the piston is completely pulled out.

Is it possible to autoclave the Varispenser 2(x) attached to a bottle?

No, it is not possible to autoclave the Varispenser 2/x attached to a bottle. The device must be placed horizontal on a cloth in the autoclave (according to operating manual chapter 5.9).

Is it possible to exchange the dispensing tube of the Varispenser 2 and 2x among each other?

Yes, it is possible to exchange the dispensing tube of the Varispenser 2 with a dispensing tube of the Varispenser 2x. Please note that the device is then capable of recirculating the liquid back into the bottle.

Do aspiration tubes of different lengths exist for Varispenser 2(x)?

Yes, aspiration tubes of different lengths are available to cover most bottle types.

Does the aspiration tube of the Varispenser 2(x) need to be cut diagonal for aspiration?

No, the aspiration tube of Varispenser 2(x) does not need to be cut diagonal, because two holes on the bottom side of the tube enable liquid uptake.

What is the "flexible discharge tube" used for?

The "flexible discharge tube" can be used to reach into small or narrow-standing tubes without tilting the botlle. More Information are available in the White Paper 38 .

For which liquids a drying tube is beneficial?

The drying tube should be used when working with fuming acids to avoid dilution. It can tehn be filled with e.g., calcium chloride or silica pills. When working with alkaline solutions filling of the drying tube with sodium hydroxide pills prevents carbonate formation and crystallization of the liquid. More Information are available in the White Paper 38 .

Is it possible to dispense sterile medium with the Varispenser 2(x)?

Yes, it is possible to dispense sterile medium with the Varispenser 2(x). We recommend the usage of a sterile filter at the back of the device to keep the sterility of the medium. More Information are available in the White Paper 38 .

Is it possible to adjust the Varispenser 2(x)?

Yes, it is possible to adjust the Varispenser 2(x) for liquids with different properties than water. Please refer to the operating manual for further information.

How can the Varispenser 2(x) be decontaminated?

The outer of the Varispenser 2/x can be wiped with lint-free tissue and 70 % ethanol. When sterilization of the inner parts is needed, the Varispenser 2/x can be autoclaved. The dispenser does not need to be dissembled for autoclaving, but it must be placed horizontal on a cloth in the autoclave (according to operating manual chapter 5.9).

Is the Varispenser 2/2x suited for dispensing 100% acetic acid (glacial acetic acid)?

Yes. 100% acetic acid can be dispensed with the Varispenser 2/2x. When using concentrated acids the usage of a drying tube is furthermore highly recommended. More information about the chemical resistance of the Varispenser 2/2x is available here .

Can the Varispenser 2/2x be used to dispense a conc. sulfuric acid which contains potassium bichromate and silver sulfate?

Yes, you can use the Varispenser 2/2x for this application. Please notice, when using concentrated acids a drying tube should be connected to the Varispenser. More information about the chemical resistance of the Varispenser 2/2x is available here .

Which physical limits does the Varispenser 2/2x has?

The device is intended for dispensing liquids with following properties: ambient temperature 15°C - 40°C , maximum density: 2.2 g/cm3, maximum vapor pressure: 500 mbar. Above 300 mbar slow aspiration is recommended to avoid boiling., kinematic viscosity: 500 mm2/s. More details are written in the operating manual .

I bought a new Varispenser 2(x) and drops are visible inside the device. Additionally an intense smell was present when opening the cardbox. What is that?

Each Varispenser 2(x) is calibrated before packaging using distilled water. Afterwards each device is rinsed with an ethanol-glycerol solution to dry faster. The drops inside the device and the smell occur from this solution. The device should be completely dry after a few minutes outside the packaging.

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Varispenser^® 2/ Varispenser^® 2x - dispensador para botellas

The Varispenser 2(x) from Eppendorf is available in six different volume sizes

Eppendorf Varispenser_REG_ 2 and Varispenser_REG_ 2x bottle-top dispensers – six different sizes for dispensing volumes from 0.2 – 100 mL

Lab technician using the Eppendorf Varispenser_REG_ 2x bottle-top dispenser

Easily fill Conical Tubes with the Varispenser_REG_ 2(x) bottle-top dispenser from Eppendorf

Lab technician using the Eppendorf Varispenser_REG_ 2x bottle-top dispenser to fill a glass vial

The Varispenser_REG_ 2x bottle-top dispenser's recirculation valve lever

The Varispenser_REG_ 2(x) bottle-top dispensers feature an easy-to-read volume scale

Varispenser_REG_ 2/2x bottle-top dispenser ventilation screw with filter

Varispenser_REG_ 2 bottle-top dispensers from Eppendorf are resistant to many chemicals and autoclavable

Varispenser_REG_ 2x bottle-top dispensers with the Eppendorf Top Buret

Varispenser_REG_ 2 and 2x bottle-top dispensers from Eppendorf fit on a variety of supply bottles and are chemical-resistant

Información del producto

¿Necesita un dispensador para botella para soluciones agresivas como ácidos, soluciones o bases? Los dispensadores para botella Eppendorf Varispenser 2 y Varispenser 2x le permiten dispensar con seguridad líquidos desde una amplia gama de botellas sin desperdicio de reactivos y son ideales para una práctica dispensación de alícuotas desde botellas de consumibles de gran tamaño. Químicamente resistentes y autoclavables, su sellado hermético proporciona protección contra medios cáusticos.

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Más información sobre la sostenibilidad y ergonomía en Eppendorf

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Información del producto

Datos técnicos

Aplicaciones

Características

Dispensación de líquidos desde botellas de forma segura, fácil y sin concesiones
Domine las tareas difíciles de dispensación de líquido con los dispensadores de botella Varispenser 2 y Varispenser 2x de aplicación universal. Disponibles en seis tamaños diferentes para la dispensación de líquidos en volúmenes de 0,2 – 100 mL, el Varispenser 2 y el 2x están diseñados para dispensar volúmenes seleccionados de manera consistente sin desperdiciar reactivos. La exclusiva tecnología de la falda obturadora PFA previene la formación de cristales de residuos de líquido limpiando la pared interior del cilindro durante la dispensación. Esta tecnología, combinada con su elevada resistencia a agentes químicos, permite usar el Varispenser 2 y el 2x para prácticamente todo tipo de líquidos, incluyendo soluciones agresivas como ácidos, bases o disolventes.
Un diseño de rosca especial y adaptadores de roscas adicionales garantizan su uso con la mayoría de las botellas grandes de consumibles y reactivos de laboratorio, mientras que una tapa adicional para la ventilación de aire ayuda a evitar la posible contaminación de la botella de consumibles. Con un bloque de válvulas con rotación de 360° que ofrece un acceso seguro y fácil en todas las posiciones, el Varispenser 2 y el Varispenser 2x consiguen que la toma de alícuotas de líquidos se pueda realizar de manera segura y práctica.
El Varispenser 2x tiene una válvula de redosificación adicional que evita la pérdida de reactivo durante la ventilación. Ambas variantes son totalmente autoclavables.

Amplia gama de accesorios opcionales para todas sus necesidades de dispensación de grandes volúmenes

Está disponible una gran variedad de accesorios para los dispensadores de botella Varispenser 2 y Varispenser 2x para ayudarle a superar cualquier desafío de dispensación de líquido que pueda encontrar en el laboratorio. Elija de entre una selección de tubos de secado, filtros, cánulas de expulsión variables, etc., para acelerar sus flujos de trabajo y evitar la contaminación. Lea más sobre los accesorios adecuados para su dispensador para botellas en nuestro Libro Blanco N.º 38.

Su elección de dispensador para botellas al trabajar con productos químicos agresivos

Si utiliza líquidos corrosivos, inflamables, de alta viscosidad o volátiles, las funciones de seguridad incorporadas de Varispenser 2 o Varispenser 2x le protegen ante vertidos accidentales y aseguran un funcionamiento sin problemas y sin esfuerzos. Gracias a su elevada resistencia a agentes químicos, estos dispensadores de botella se pueden usar con gran variedad de reactivos líquidos en el amplio abanico de aplicaciones que se encuentra con frecuencia en los laboratorios biológicos, farmacéuticos, químicos o forenses, proporcionando un sellado superior en una amplia gama de temperaturas y viscosidades.

How to use a Varispenser 2 bottle-top dispenser

Attach the telescopic aspirating tube and recirculation valve (Varispenser 2x only) to the bottle-top dispenser before attaching it to your supply bottle using the appropriate adapter. Unlock the volume selection slider by pushing it to the right, slide it to your desired volume and lock it by pushing the slider to the left. Vent the dispenser by pulling up the piston and pushing it down to dispense liquid into any target vessel until the liquid inside the cylinder is free from air bubbles. Dispense liquid by following the same steps after venting. Note that the dispenser is not a suitable bottle closure and should be removed from the bottle and properly cleaned after use. Learn more in our tutorial videos and by reading the operating manual.

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Características	Varispenser^® 2x - 4967000014	Varispenser^® 2 - 4966000010	Varispenser^® 2x - 4967000022	Varispenser^® 2 - 4966000029	Varispenser^® 2x - 4967000030	Varispenser^® 2 - 4966000037	Varispenser^® 2x - 4967000049	Varispenser^® 2 - 4966000045	Varispenser^® 2x - 4967000057	Varispenser^® 2 - 4966000053	Varispenser^® 2x - 4967000065	Varispenser^® 2 - 4966000061

Tipo de producto	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores	Dispensadores
Tipo de pipeteo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo	Sistema de desplazamiento positivo
Número de canales	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal	1-canal
Rango volumétrico	0,2 – 2 mL	0,2 – 2 mL	0,5 – 5 mL	0,5 – 5 mL	1 – 10 mL	1 – 10 mL	2,5 – 25 mL	2,5 – 25 mL	5 – 50 mL	5 – 50 mL	10 – 100 mL	10 – 100 mL
Incremento de volumen	0.05 mL	0.05 mL	0.1 mL	0.1 mL	0.2 mL	0.2 mL	0.5 mL	0.5 mL	1 mL	1 mL	1 mL	1 mL
Modo de funcionamiento	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico	mecánico
Error de medición aleatorio	0.2 mL: ± 1%; ± 2 µL 1 mL: ± 0.2%; ± 2 µL 2 mL: ± 0.1%; ± 2 µL	0.2 mL: ± 1%; ± 2 µL 1 mL: ± 0.2%; ± 2 µL 2 mL: ± 0.1%; ± 2 µL	0.5 mL: ± 1%; ± 5 µL 2.5 mL: ± 0.2%; ± 5 µL 5 mL: ± 0.1%; ± 5 µL	0.5 mL: ± 1%; ± 5 µL 2.5 mL: ± 0.2%; ± 5 µL 5 mL: ± 0.1%; ± 5 µL	1 mL: ± 1%; ± 10 µL 5 mL: ± 0.2%; ± 10 µL 10 mL: ± 0.1%; ± 10 µL	1 mL: ± 1%; ± 10 µL 5 mL: ± 0.2%; ± 10 µL 10 mL: ± 0.1%; ± 10 µL	2.5 mL: ± 1%; ± 25 µL 12.5 mL: ± 0.2%; ± 25 µL 25 mL: ± 0.1%; ± 25 µL	2.5 mL: ± 1%; ± 25 µL 12.5 mL: ± 0.2%; ± 25 µL 25 mL: ± 0.1%; ± 25 µL	5 mL: ± 1%; ± 50 µL 25 mL: ± 0.2%; ± 50 µL 50 mL: ± 0.1%; ± 50 µL	5 mL: ± 1%; ± 50 µL 25 mL: ± 0.2%; ± 50 µL 50 mL: ± 0.1%; ± 50 µL	10 mL: ± 1%; ± 100 µL 50 mL: ± 0.2%; ± 100 µL 100 mL: ± 0.1%; ± 100 µL	10 mL: ± 1%; ± 100 µL 50 mL: ± 0.2%; ± 100 µL 100 mL: ± 0.1%; ± 100 µL
Error de medición sistemático	0.2 mL: ± 5%; ± 10 µL 1 mL: ± 1%; ± 10 µL 2 mL: ± 0.5%; ± 10 µL	0.2 mL: ± 5%; ± 10 µL 1 mL: ± 1%; ± 10 µL 2 mL: ± 0.5%; ± 10 µL	0.5 mL: ± 5%; ± 25 µL 2.5 mL: ± 1%; ± 25 µL 5 mL: ± 0.5%; ± 25 µL	0.5 mL: ± 5%; ± 25 µL 2.5 mL: ± 1%; ± 25 µL 5 mL: ± 0.5%; ± 25 µL	1 mL: ± 5%; ± 50 µL 5 mL: ± 1%; ± 50 µL 10 mL: ± 0.5%; ± 50 µL	1 mL: ± 5%; ± 50 µL 5 mL: ± 1%; ± 50 µL 10 mL: ± 0.5%; ± 50 µL	2.5 mL: ± 5%; ± 125 µL 12.5 mL: ± 1%; ± 125 µL 25 mL: ± 0.5%; ± 125 µL	2.5 mL: ± 5%; ± 125 µL 12.5 mL: ± 1%; ± 125 µL 25 mL: ± 0.5%; ± 125 µL	5 mL: ± 5%; ± 250 µL 25 mL: ± 1%; ± 250 µL 50 mL: ± 0.5%; ± 250 µL	5 mL: ± 5%; ± 250 µL 25 mL: ± 1%; ± 250 µL 50 mL: ± 0.5%; ± 250 µL	10 mL: ± 5%; ± 500 µL 50 mL: ± 1%; ± 500 µL 100 mL: ± 0.5%; ± 500 µL	10 mL: ± 5%; ± 500 µL 50 mL: ± 1%; ± 500 µL 100 mL: ± 0.5%; ± 500 µL
Esterilizable en autoclave	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí
Sistema abierto (consumibles de terceros)	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí	sí
Rosca	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45
Adaptador de rosca para botella incl.	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 25, GL 28/S 28, GL 32, GL 38, S 40¹⁾¹⁾	GL 32, GL 38, S 40¹⁾	GL 32, GL 38, S 40¹⁾	GL 32, GL 38, S 40¹⁾	GL 32, GL 38, S 40¹⁾	GL 32, GL 38, S 40¹⁾	GL 32, GL 38, S 40¹⁾
Contenido del envío	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (125 mm - 240 mm), adaptador de roscas (x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal	Dispensador, manual de instrucciones, certificado, tubo de aspiración telescópico (170 mm - 330 mm), adaptador de roscas (x3: 32 mm, 38 mm, 40 mm), llave universal

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Descargas: Varispenser^® 2/ Varispenser^® 2x

Guía de selección

Get It Right! Selection Chart for Liquid Handling Instruments & Tips

Find the most suitable pipetting system for your lab applications

You give your all to scientific research every day. Eppendorf liquid handling instruments help you grow beyond your limits

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Sin igual en tecnología, efi ciencia y manejo – durante 50 años.

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Inglés

Folleto

Servivio de qualidad para pipetas

Calibración de pipetas Eppendorf

Uncompromising from the bottom to the top –
Varispenser^® 2 and Varispenser^® 2x bottle-top dispensers

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Inglés

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Varispenser® 2/ Varispenser® 2x - dispensador para botellas

The Varispenser 2(x) from Eppendorf is available in six different volume sizes

Eppendorf Varispenser® 2 and Varispenser® 2x bottle-top dispensers – six different sizes for dispensing volumes from 0.2 – 100 mL

Lab technician using the Eppendorf Varispenser® 2x bottle-top dispenser

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The Varispenser® 2x bottle-top dispenser's recirculation valve lever

The Varispenser® 2(x) bottle-top dispensers feature an easy-to-read volume scale

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Varispenser® 2 bottle-top dispensers from Eppendorf are resistant to many chemicals and autoclavable

Varispenser® 2x bottle-top dispensers with the Eppendorf Top Buret

Varispenser® 2 and 2x bottle-top dispensers from Eppendorf fit on a variety of supply bottles and are chemical-resistant

General handling

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Información del producto

Varispenser® 2(x) Bottle-Top Dispenser

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Services (8)

Accesorios (23)

Piezas de recambio (13)

Información del producto

Amplia gama de accesorios opcionales para todas sus necesidades de dispensación de grandes volúmenes

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How to use a Varispenser 2 bottle-top dispenser

Datos técnicos

Aplicaciones

Características

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Folletos (11)

Manuales (40)

Notas y documentos (4)

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