Eppendorf Research plus single-channel pipette, variable, 0.5–5 mL, purple, 3123000071
€279.00
- Variable volume range 0.5–5 mL
- Increment 0.005 mL
- Colour code: purple
- Spring-loaded tip cone, requires minimal operating force
- Autoclavable at 121 °C for 20 minutes
- epT.I.P.S. purple 120 mm (0.1–5 mL)
Product information "Eppendorf Research plus single-channel pipette, variable, 0.5–5 mL, purple, 3123000071"
Varying sample volumes within the same volume range require a pipette that can be adjusted quickly and without the need for tools. The Eppendorf Research plus single-channel pipette, in its variable 0.5–5 mL version in purple, meets precisely this need, with an increment of 0.005 mL and a spring-loaded tip cone that reduces the effort required to attach tips. It is designed for workstations where dilution series or different sample volumes occur within the same batch.
Typical applications
The Eppendorf Research plus 0.5–5 mL is suitable, amongst other things, for:
- Preparing larger volumes of buffers and media
- Dilution of stock solutions
- Filling test tubes and culture flasks
- Decanting during sample preparation in routine laboratories
Features and handling
The spring-loaded tip cone, which Eppendorf uses in all Research plus pipettes up to 1 mL, reduces the force required to attach and eject the pipette tip. Within the Eppendorf pipette range, Research plus is one of the lightest models, which is an advantage when carrying out many consecutive pipetting steps. The Fortron PerfectPiston is housed in a base section that can be dismantled without tools, which is practical for cleaning and maintenance.
If the pipetting result deviates from the expected accuracy – for example, when using a liquid other than water – the pipette can be readjusted via a user adjustment without losing the original factory setting.
Selection guide within the Research-plus range
The volume ranges vary significantly across the variable Research-plus models. The following overview shows comparable variable models from the same range:
| Volume | Colour code | MPN |
| 1–10 mL | turquoise | 3123000080 |
| 2–20 µL | light grey | 3123000098 |
| 2–20 µL | yellow | 3123000039 |
| 30–300 µL | orange | 3123000101 |
The appropriate volume in each individual case depends on the actual sample quantities and reagent volumes involved in the respective step. Selecting a volume that is too large reduces relative accuracy at the lower end of the scale, whilst selecting a volume that is too small necessitates several pipetting steps instead of a single one.
Comparison of Research plus, Reference 2 and Xplorer
Three product lines, three operating concepts: Research plus operates purely mechanically via a control wheel, without electricity or a display. Reference 2 displays the set volume digitally and is operated via a single button, which reduces the effort required. Xplorer and Xplorer plus pipette electronically, with adjustable dispensing speeds and, in the Plus version, additional programmes such as sequential pipetting. Research plus remains the range with the lowest weight and the simplest handling when no display or programming is required.
Differentiation within the Research plus range
If the volume range of this pipette does not fully meet your requirements, it is worth looking at similar Research plus models, for example the Eppendorf Research plus single-channel pipette, variable (1–10 mL), 3123000080 Eppendorf Research plus G pipette, single-channel, variable, 2–20 µL, light grey, epT.I.P.S. box, 3123000098. This allows you to put together a suitable combination of several volume ranges without having to switch to a different product line.
Use, storage and maintenance
Autoclaving is possible whilst the pipette is fully assembled, at 121 °C and 1 bar overpressure for 20 minutes; the lower section remains attached during this process. The filter sleeve and protective filter are autoclaved separately. There is no need to re-lubricate after autoclaving; a gravimetric check afterwards is recommended. Without transport packaging, the pipette should be stored at between –5 and 45 degrees Celsius and 10 to 95 per cent relative humidity; during operation, it should be kept at between 5 and 40 degrees Celsius within the same humidity range. The relevant Eppendorf authorised partner is responsible for warranty matters, with the exception of wear parts and damage resulting from misuse or unauthorised opening of the upper part.
Fixed volume or variable setting
A variable-volume pipette is worthwhile whenever different volumes within the same range are required during a workflow, such as for dilution series or varying sample volumes. The adjustment wheel allows for adjustment without tools and without changing equipment. If, on the other hand, only a single volume is pipetted on a permanent basis, a fixed-volume pipette from the same range reduces the risk of error caused by accidental adjustment.
Frequently asked questions
Is the Eppendorf Research plus 0.5–5 mL autoclavable?
Yes. The upper and lower sections can be autoclaved together at 121 degrees Celsius and 1 bar overpressure for 20 minutes without the lower section needing to be dismantled. The filter sleeve and protective filter are autoclaved separately.
How is accuracy checked after autoclaving?
Re-lubrication is not necessary; however, Eppendorf still recommends a gravimetric check after autoclaving to confirm accuracy.
How is the volume set on the variable model?
Via the mechanical adjustment wheel on the pipette head, without a display or electronics. The set value is retained until the next adjustment.
Which pipette tips are compatible with the Eppendorf Research plus 0.5–5 mL?
According to the operating instructions, epT.I.P.S. purple 120 mm (0.1–5 mL).
Is the pipette an in vitro diagnostic device?
According to the operating instructions, the Research plus range is designed for the low-contamination transfer of liquids, including samples from the human body and reagents within the context of an in vitro diagnostic application as defined by Directive 98/79/EC.
To whom should warranty claims be addressed?
To the relevant Eppendorf authorised dealer. Excluded are damages resulting from misuse, unauthorised opening of the upper part, and wear and tear of typical wear parts.
Can the pipette be readjusted if it deviates from the factory setting?
According to the manufacturer, secondary calibration is provided for the Research-plus range. Details are set out in a separate Eppendorf calibration document, the full text of which was not available at the time of writing.
What does the IVD marking on the Research-plus range signify?
The user manual generically refers to the pipette as an in vitro diagnostic device within the meaning of Directive 98/79/EC, for the entire Research-plus range. No product-specific confirmation was available at the time of writing.
Technical details
| Range | Eppendorf Research plus | |
| Model | variable | |
| Volume | 0.5–5 mL | |
| Increment | 0.005 mL | |
| Colour code | purple | |
| Compatible pipette tip | epT.I.P.S. purple 120 mm (0.1–5 mL) | |
| Test volume 0.5 mL | Systematic measurement error 2.4%/12 µL | Random measurement error 0.6%/3 µL |
| Test volume 2.5 mL | Systematic measurement error 1.2%/30 µL | Random measurement error 0.25%/6.25 µL |
| Test volume 5.0 mL | Systematic measurement error 0.6%/30 µL | Random measurement error: 0.15 per cent/7.5 µL |
| Standard | Test in accordance with ISO 8655 |
Contents
- 1 Eppendorf Research plus single-channel pipette (0.5–5 mL, purple)
Individual requirements & procurement service
For suitable pipette tips, spare parts or additional volume ranges from the Research plus range, LT Laborhandel provides support via its own procurement service at lt-laborhandel.de/service.
| Colour: | Violet |
|---|---|
| Number of channels: | 1-channel |
| Operation: | mechanical |
| Volume range: | 0.5 ml - 5 ml |
| Volume setting: | variable |