Macherey-Nagel NANOCOLOR VARIO C2 M thermoblock, 10 positions, 22 mm bores, 919350.1

Not every sample fits into a standard 16 mm diameter cuvette. Metal analysis and other specialised methods often require larger round cuvettes or reaction vessels, for which a standard 16 mm instrument simply does not have enough space. The Macherey-Nagel NANOCOLOR VARIO C2 M thermoblock fills this gap: It combines eight standard 16 mm bores with two additional 22 mm diameter bores in a single unit, meaning that routine and XL digests no longer need to be split between two separate thermoblocks. For laboratories that regularly require both vessel sizes, this eliminates the need to purchase a second unit. This not only saves on capital expenditure but also on floor space in the laboratory.

Two bore sizes, one instrument

Of the 10 positions in total, eight (16 mm) are designed for standard cuvette tests, whilst two additional 22 mm bores accommodate larger round cuvettes or reaction vessels, such as those used in particular for XL digests in metal analysis. The C2 M therefore covers both daily routine work and samples with non-standard vessel geometries without the need to purchase an additional instrument. For laboratories that only occasionally digest XL vessels, this eliminates the need for a separate thermoblock solely for special cases.

Precise temperature range, user-friendly operation

The temperature range extends from 40 to 160 °C in 1 °C increments, with a stability of ±1 °C in accordance with DIN, EN, ISO and EPA methods. Six preset standard temperatures and six freely definable programme slots cover both routine and special methods equally, regardless of whether a 16 mm or 22 mm bore is used. Operation is via a backlit colour touchscreen display with an icon-based menu in nine languages, including German, English and French.

Space-saving for everyday laboratory use

With external dimensions of 282 x 169 x 146 mm and a weight of 2,800 g (gross, including packaging), the VARIO C2 M occupies the same footprint as the VARIO C2, despite the two additional 22-mm bores. This means that a separate unit for XL vessels is not only functionally but also physically redundant, which is a significant advantage, particularly in smaller laboratories with limited worktop space.

Network-compatible and capable of data logging

RS232, USB-A and USB-B interfaces enable connection to PC systems and data exchange; free software updates can be installed via the internet/PC or a USB stick. This simplifies integration with existing laboratory software and the sharing of test reports. In combination with the optional NANOCOLOR T-Set (919917) or the USB version (919921), automatic calibration including a test certificate in accordance with DWA-A 704 is possible, which is important for internal quality assurance.

Reliable in everyday laboratory use

The VARIO C2 M meets CE requirements and is designed for an ambient temperature range of 10 to 40 °C and a maximum relative humidity of 80 per cent (non-condensing), even when operating with a mix of standard and XL boreholes.

Position within the NANOCOLOR VARIO family

The VARIO C2 M complements the structurally identical VARIO C2 (12 positions, 16 mm only) with two 22 mm bores for larger digestion vessels, offering a total of 10 positions instead of 12. Those working exclusively with standard cuvettes will find the VARIO C2 sufficient and can save on the two unnecessary XL positions compared to the C2 M. Those who need to work on the move will find the VARIO Mini the ideal solution, whilst those wishing to run two methods simultaneously or process a particularly large number of samples per run will find the VARIO 4, with two independent blocks and 24 positions, the right choice. The VARIO HC further complements the range with an active cooling function for shorter cycle times.

Typical applications

The VARIO C2 M is suitable for laboratories which, in addition to the standard 16 mm cuvette routine, regularly need to digest larger vessels as well – for example, where the same laboratory handles both standard COD samples and metal samples in larger reaction vessels, and both digestions are to be carried out using the same instrument:

• XL digestions for metal analysis in reaction vessels with a diameter of 22 mm
• Parallel operation of standard cuvettes (16 mm) and larger round cuvettes in a single instrument
• Environmental and in-house laboratories with a mixed sample range comprising routine and specialised methods
• Contract laboratories that need to accommodate different customer specifications regarding vessel size
• Sewage treatment works and wastewater treatment plants carrying out occasional metal digestion alongside routine COD testing

Technical details

Contents

• 1x NANOCOLOR VARIO C2 M thermoblock
• 1x mains cable
• 1x Fold-away protective cover
• 1x User manual
• 1x data cable
• 1x software DVD
• 1x certificate

Customised requirements & procurement service

Do you require suitable NANOCOLOR cuvette tests, empty cuvettes (16 mm or 22 mm), reaction vessels or a T-set for automatic calibration? Our procurement service will be happy to assist you in making the right choice.