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.

Can the Varispenser be used to dispense dibutylamine?

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

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!

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.

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 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 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.

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.

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 .

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).

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 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.

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.

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 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.

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 .

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

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

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 - 바틀탑 디스펜서

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

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

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

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

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

Varispenser® 2/2x bottle-top dispenser ventilation screw with filter

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

제품 정보

산, 용액 또는 염기와 같은 강한 용액을 분주하는 바틀탑 디스펜서가 필요하십니까? Eppendorf의 Varispenser 2 및 Varispenser 2x 바틀탑 디스펜서를 사용하면 시약 낭비 없이 다양한 병의 액체를 안전하게 분주하고 큰 공급병의 분취량을 편리하게 조절할 수 있습니다. 내화학성이 우수하고 오토클레이브가 가능한 견고한 밀봉이 부식성 매체로부터 시료를 보호합니다.

제품 정보 자세히 표시

데모 신청

이 페이지 하단에서 추가 다운로드 자료를찾을 수 있습니다.

제품 정보

기술 정보

애플리케이션

특징

Bottle에서 안전하고 쉽게 액체 분주 가능
Varispenser 2 및 Varispenser 2x의 범용 바틀탑 디스펜서로 까다로운 액체 분주를 손쉽게 처리할 수 있습니다. Varispenser 2 및 2x는 6가지 크기로 0.2 – 1 00mL 용량의 분주를 할 수 있어 시약 낭비 없이 원하는 용량을 일정하게 분주할 수 있습니다. 차별화된 PFA 밀폐 립 기술이 분주 중에 내부 실린더 벽을 닦아서 배지(media) 잔류물에서 결정 생성을 방지합니다. 또한 Varispenser 2 및 2x는 내화학성이 높아서 산, 염기 또는 용매와 같은 강한 용액을 포함한 거의 모든 종류의 액체에 처리할 수 있습니다.
특수 나사산 디자인과 추가 나사산 어댑터가 있어 실험실에서 대부분의 대형 공급 및 시약 병과 함께 사용할 수 있으며, 추가 공기 배출 캡은 공급병에서 발생할 수 있는 오염을 방지하는 데 도움이 됩니다. 또한 Varispenser 2 및 Varispenser 2x는 모든 위치에서 안전하고 쉽게 접근할 수 있는 360° 회전 밸브 블록이 사용되어 액체를 안전하고 편리하게 분주합니다.
Varispenser 2x에는 환기 중에 시약 손실을 방지하는 추가 재순환 밸브가 있습니다. 두 버전 모두 완전한 오토클레이브 처리가 가능합니다.

대용량 분주 작업에 맞게 다양한 액세서리 선택 가능

Varispenser 2 및 Varispenser 2x 바틀탑 디스펜서에서 다양한 액세서리를 사용할 수 있어 액체 분주 시 발생하는 여러 문제를 해결할 수 있습니다. 건조 튜브, 필터, 가변 배출 튜브 등을 선택하여 작업 속도를 높이고 오염을 방지하십시오. Eppendorf의 38번 백서에서 바틀탑 디스펜서에 적합한 액세서리에 대해 자세히 알아보십시오.

강한 화학물질을 처리할 때 사용하는 바틀탑 디스펜서

부식성, 인화성, 고점도 또는 휘발성 액체를 처리할 때 Varispenser 2 또는 Varispenser 2x의 내장된 안전 기능이 우발적인 액체 유출로부터 사용자를 보호하고 원활하고 손쉬운 작동을 보장합니다. 내화학성이 매우 높아서 생물학, 제약, 화학 또는 법의학 연구실의 일상적인 작업에서 다양한 액체 시약과 함께 사용할 수 있습니다. 광범위한 온도와 점도에서 밀봉 효과가 뛰어납니다.

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.

간단히 보기

사양	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

제품 유형	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서	디스펜서
피펫팅 유형	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템	직접 치환 시스템
채널 수	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널	1-채널
용량 범위	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
용량 증가	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
작동 모드	수동	수동	수동	수동	수동	수동	수동	수동	수동	수동	수동	수동
Random measurement error	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
Systematic measurement error	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
오토클레이브 가능	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
개방형 시스템(타사 소모품)	예	예	예	예	예	예	예	예	예	예	예	예
나사	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45	GL 45
Bottle 나사 어댑터 포함	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⁾
제품 구성	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(125 mm - 240 mm), 나사식 어댑터(x5: 25 mm, 28 mm, 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치	디스펜서, 사용 설명서, 인증서, 텔레스코픽 흡입 튜브(170 mm - 330 mm), 나사식 어댑터(x3: 32 mm, 38 mm, 40 mm), 범용 렌치