Brand Transferpettor Positive Displacement Pipette, Fixed, 10 µl, with Glass Capillary, 701858

When inoculating samples repeatedly, one thing is paramount: the same volume every time. The Brand Transferpettor positive displacement pipette, fixed at 10 µl, delivers this fixed volume without the need for an adjustment wheel. For glycerine solutions, which are prone to volume fluctuations in an air-cushion pipette due to their viscosity, direct piston contact within the glass capillary ensures a reproducible result.

Direct displacement principle without an air cushion

Like the micro models in the Digital range, the 10 µl fixed-volume version also features a glass capillary in which the piston moves without an air cushion. According to Brand, media with a density of up to 3.8 g/cm³ and a vapour pressure of up to 500 mbar are approved; the operating temperature range is 15 to 40 °C. According to the manufacturer, the kinematic viscosity limit for the nominal volume of 10 µl is up to 20,000 mm²/s. As the volume cannot be adjusted, the Fix series does not specify a graduation increment.

The colour code for this 10 µl version is orange; the accuracy is 3.0 % and the coefficient of variation is 0.8 %.

Typical applications

Typical applications for the 10 µl version include the following:

• The repeated inoculation of samples with a consistent volume
• Working with solvents with high vapour pressure, such as alcohols or ethers, without the evaporation errors associated with an air-cushion pipette
• Working with foaming or highly viscous media, such as glycerine solutions, where an air-cushion pipette traps air bubbles
• Batch pipetting with the same tip, without having to change the tip after each step

Selection guide for the Fix range

According to the manufacturer, a significantly higher kinematic viscosity (up to 20,000 mm²/s) is permissible at 10 µl than with the larger Fix models (up to 6,000 mm²/s); this version is therefore suitable for more viscous media. Like the entire Fix range, it retains the glass capillary design. If a workflow also requires a variable volume between 10 and 50 µl, the corresponding Digital model is suitable.

Fix or Digital

If the volume remains constant throughout the entire workflow, the simpler, more cost-effective Fix model is preferable, as is the case here with a 10 µl capacity. If the volume varies from sample to sample, for example, in dilution series, a Digital version from the same product range is the more suitable choice, as it can be adjusted to a new value without changing the device.

Maintenance and accessories

For the fixed-volume range, we offer the same range of accessories as for the ‘micro’ version of the Digital range: station, glass capillaries, seals, ‘Caps+Seal’ combo pack, repair kit, micro piston rod, clamping ring and attachment block. The repair kit covers the replacement of the piston rod and seal. Details regarding housing material, dimensions, weight and autoclavability are available on request.

For the 10 µl version with the orange colour code, this range of accessories remains unchanged, regardless of the specific fixed volume.

Frequently Asked Questions

Can the volume of the 10 µl version be adjusted?
No, the Fix series has a fixed volume without an adjustment wheel; due to its design, adjustment is not provided for.

How accurate is this volume setting?
The accuracy is 3.0 %, with a coefficient of variation of 0.8 %, according to the manufacturer’s test data for the 10 µl version with an orange colour code.

Which media are compatible with the Fix series?
Media with a density of up to 3.8 g/cm³ and a vapour pressure of up to 500 mbar, at an operating temperature of 15 to 40 °C, according to the manufacturer’s specifications for the entire glass capillary range.

Which accessories are compatible with the 10 µl version?
The same range as for the ‘micro’ version of the Digital series: station, glass capillaries, seals, Caps+Seal combo pack, repair kit, micro piston rod, clamping ring and attachment block.

What is the 10 µl version typically used for?
For the repeated inoculation of samples with a consistent volume, as well as generally for glycerine solutions in a consistent volume.

Technical details

Scope of delivery

• Transferpettor positive displacement pipette, 10 µl

We will confirm on request whether a quality certificate is included.

Individual requirements and procurement service

If, in addition to the 10 µl version, you require a different volume size from the Transferpettor-Fix range, suitable accessories or a spare part, our procurement service can assist you.