Thermal blocks
Thermal blocks prepare samples for photometric water and wastewater analysis: they heat cuvette tests in a controlled manner to the temperature required for chemical digestion – a prerequisite for reliable measurement results for parameters such as COD, total nitrogen or heavy metals. LT Laborhandel stocks the Macherey-Nagel NANOCOLOR-VARIO series: from the compact single-block ‘Mini’ model, through dual-block models, to the version with active cooling for temperature-sensitive parameters. You will also find the appropriate cuvette tests and the corresponding photometers for analysis in our shop. Further temperature control equipment is available under ‘Temperature Control’. If you have any questions about selecting the right block size, our sales team will be happy to assist you.
Macherey-Nagel NANOCOLOR VARIO Mini Thermoblock, 6 positions, portable, 919380
Anyone who has to digest water samples not in the laboratory but directly on site at the watercourse, at the sewage treatment works or at the customer’s premises is familiar with the problem: without a mains power supply and fixed laboratory equipment, it is virtually impossible to carry out a COD or nitrogen digestion. The Macherey-Nagel NANOCOLOR VARIO Mini thermoblock solves exactly that problem. It can be powered via a 12-volt car socket and, with its compact dimensions of 170 x 105 x 125 mm, fits into any boot or fieldwork bag. As the smallest and most affordable model in the NANOCOLOR VARIO range, it is the ideal entry-level solution for anyone who needs to digest samples occasionally or whilst on the move, without having to invest in a large benchtop unit straight away. Mobile operation without laboratory infrastructure The 12 V, 5 A and 60 W power supply allows connection to a vehicle’s on-board electrical system. This makes the thermoblock a mobile companion for on-site sampling, for example at water bodies, sewage treatment works or construction sites, where no laboratory mains supply is available. Weighing 1,450 g (gross) and with its compact dimensions, the unit can be transported with minimal effort, stowed in a vehicle and set up and made ready for use within a few minutes. Precise temperature control in accordance with standards, even on the move Six boreholes with an external diameter of 16 mm accommodate the cuvette tests. Six fixed temperature settings (70 °C, 100 °C, 120 °C, 148 °C, 150 °C and 160 °C) cover the standard digestion procedures in accordance with DIN, EN, ISO and EPA methods, with a temperature stability of ±1 °C to ensure reproducible results. Even outside the laboratory, there is no need to compromise on accuracy; results obtained in the field are comparable to those from a stationary digestion process. Simple operation and update capability Menu navigation is via an illuminated graphical LCD display with 128 x 64 pixels and four buttons with icon-based navigation, which is intuitive to use even in field conditions whilst wearing gloves or in changing light conditions. Free software updates can be installed via the mini-USB OTG interface, either via a PC and the internet or directly via a USB stick. Internal quality control is possible using the optionally available T-Set adaptors (919917 or the USB version 919921). The removable protective cover is secured magnetically, whilst overheating protection ensures additional operational safety during mobile use. Safe for field use Despite being designed for mobile use, the VARIO Mini meets CE requirements and is rated for an ambient temperature range of 10 to 40 °C and a maximum relative humidity of 80 per cent (non-condensing). The integrated overheating protection and the magnetically secured protective cover ensure that the thermoblock can be operated safely even outside controlled laboratory conditions. Position within the NANOCOLOR VARIO family In addition to the Mini, the NANOCOLOR VARIO range from Macherey-Nagel comprises four further thermoblocks for different requirements: the single-block VARIO C2 with 12 positions for everyday laboratory use, the VARIO C2 M with additional 22-mm bores for larger digestion vessels, the VARIO 4 with two independently controllable blocks for high throughput, and the VARIO HC with active cooling for shorter cycle times. Those who regularly process larger sample batches in the laboratory are better served by one of these benchtop models; in terms of sheer sample capacity, the Mini, with its 6 positions, has been deliberately kept compact. The VARIO Mini remains the right choice when mobility, low weight and an affordable entry-level price are the key priorities. Typical areas of application The NANOCOLOR VARIO Mini really comes into its own wherever samples do not need to be transported to the laboratory first, but digestion must take place directly on site – for example, when a water supplier’s field team needs to check a limit value on site at the weekend and does not want to wait until Monday for the laboratory result: Mobile sampling and on-site digestion for field teams from water suppliers and environmental laboratories Water and wastewater monitoring away from fixed laboratory facilities Small laboratories and in-house laboratories with occasional, non-routine digestion requirements Supplementary equipment for laboratories that already own a larger benchtop unit and wish to be mobile as well Determination of COD, total nitrogen and total phosphorus in the field in accordance with DIN, EN, ISO and EPA methods Technical details Positions/boreholes6 × 16 mm outer diameter Temperature settings70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C Temperature stability±1 °C (in accordance with DIN, EN, ISO, EPA) Dimensions (L×W×H)170 × 105 × 125 mm Weight (gross)1,450 g Power supply12 V, 5 A, 60 W DisplayBacklit graphic LCD, 128 × 64 pixels Operating conditions10–40 °C, max. 80% relative humidity (non-condensing) CertificationCE Contents 1x NANOCOLOR VARIO Mini thermoblock 1x power cable 1x Fold-away protective cover 1x User manual 1x Certificate Customised requirements & procurement service Do you need suitable NANOCOLOR cuvette tests, a T-Set for internal quality control or accessories for other thermoblock models? Our procurement service will be happy to help you choose the right products.
Macherey-Nagel NANOCOLOR VARIO C2 single thermoblock, 12 positions, 919350
For day-to-day work in water and wastewater analysis, a piece of equipment is needed that the laboratory team can rely on day in, day out – one that is robust, large enough to handle the usual sample throughput, and easy to operate. The Macherey-Nagel NANOCOLOR VARIO C2 thermoblock is designed precisely for this purpose: as a single-block unit with 12 positions, it covers day-to-day operations in sewage treatment works, environmental and contract laboratories, without the added complexity of a dual-block unit or the limitations of a small portable device. Unlike the portable or particularly high-performance models in the range, it is deliberately designed to strike a balanced compromise between capacity, ease of use and purchase cost. 12 positions for day-to-day laboratory work The VARIO C2 accommodates up to 12 cuvette tests with an external diameter of 16 mm simultaneously and carries out the chemical digestion prior to photometric measurement. Six preset standard temperatures (70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C) minimise operational errors in routine work, whilst six additional freely definable programme slots also cover individual or less frequently required digestion procedures without the need for a second instrument. The standard bore size of 16 mm is compatible with common NANOCOLOR cuvette tests, meaning that standard methods can be carried out directly without the need for special accessories. 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. Compliance with these recognised test methods is particularly relevant for laboratories with a duty to provide evidence to regulatory authorities or clients, as it enables results to be documented in a traceable manner. Operation is via a backlit colour touchscreen with an icon-based menu in nine languages, including German, English and French, ensuring that even temporary staff or trainees can quickly find their way around. 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 fits on any laboratory workstation without taking up valuable space at the fume cupboard or on the workbench. Its compact design also makes it easy to position next to a NANOCOLOR photometer, enabling a direct transition from digestion to measurement. Network-ready 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 both integration with existing laboratory software and the sharing of test reports as part of quality assurance. 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 – an important component for internal quality assurance and for audits. Reliable in everyday laboratory use The VARIO C2 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), as required for continuous operation in everyday laboratory use. Position within the NANOCOLOR VARIO range In addition to the VARIO C2, Macherey-Nagel offers four further thermoblocks in the NANOCOLOR VARIO range: the portable VARIO Mini with 6 positions for use outside the laboratory; the VARIO C2 M with additional 22 mm bores for larger digestion vessels; the VARIO 4 with two independently controllable blocks and 24 positions for high throughput; and the VARIO HC with active cooling for shorter cycle times. For those who exclusively digest standard 16 mm cuvettes and find that 12 positions are sufficient for their day-to-day laboratory work, the VARIO C2 is the ideal central piece of equipment, without having to pay extra for specialised applications. Typical areas of application The VARIO C2 is the workhorse of the NANOCOLOR thermoblock range: designed for daily routine operation where a moderate number of samples need to be digested regularly, for example when a plant laboratory processes a fixed series of COD and nutrient samples every morning before the samples are analysed photometrically: Daily COD, total nitrogen and total phosphorus analysis in sewage treatment works and municipal wastewater treatment plants Routine digestion in in-house laboratories with their own wastewater monitoring Environmental and contract laboratories with a regular, predictable sample throughput Training and university laboratories as the central sample preparation unit for practical sessions Metal digestion and other photometric cuvette tests, in which up to 12 samples are digested in parallel Technical details Positions/boreholes12 × 16 mm outer diameter Temperature range40–160 °C, adjustable in 1 °C increments Preset temperatures70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C (+ 6 freely definable slots) Temperature stability±1 °C (in accordance with DIN, EN, ISO, EPA) Dimensions (L×W×H)282 × 169 × 146 mm Weight (gross, including packaging)2,800 g Power supply110–230 V AC, 50/60 Hz, 150/300 W DisplayBacklit colour touchscreen, icon-based menu InterfacesRS232, USB-A, USB-B Operating conditions10–40 °C, max. 80% relative humidity (non-condensing) CertificationCE Contents 1x NANOCOLOR VARIO C2 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 need suitable NANOCOLOR cuvette tests, a T-Set for automatic calibration or accessories for other thermoblock models? Our procurement service will be happy to help you choose the right products.
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 Positions/bores8 × 16 mm + 2 × 22 mm outer diameter (10 in total) Temperature range40–160 °C, adjustable in 1 °C increments Preset temperatures70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C (+ 6 freely definable settings) Temperature stability±1 °C (in accordance with DIN, EN, ISO, EPA) Dimensions (L×W×H)282 × 169 × 146 mm Weight (gross, including packaging)2,800 g Power supply110–230 V AC, 50/60 Hz, 150/300 W DisplayBacklit colour touchscreen, icon-based menu InterfacesRS232, USB-A, USB-B Operating conditions10–40 °C, max. 80% relative humidity (non-condensing) CertificationCE 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.
Macherey-Nagel NANOCOLOR VARIO 4 thermoblock, two separate blocks, 24 positions, 919300
Anyone who has to process large sample runs using different digestion methods on a daily basis is familiar with the time-related issue: if a COD digestion is currently running at 148 °C in a single thermoblock, a nitrogen digestion at a different temperature has to wait until the thermoblock has been readjusted and stabilised again. The Macherey-Nagel NANOCOLOR VARIO 4 thermoblock solves this problem with two completely separate heating blocks, each of which is controlled independently to different temperatures. This allows two different digestion methods to run simultaneously rather than one after the other, processing up to 24 samples per run in total without any waiting time between them. This makes the VARIO 4 the model with the highest capacity in the entire NANOCOLOR VARIO range and the right choice for laboratories reaching their capacity limits. Two independent blocks for parallel methods Each of the two blocks has 12 wells with an external diameter of 16 mm, as well as its own temperature control, its own standard temperatures and its own freely definable programme slots, completely independent of the other block. This allows, for example, COD and nitrogen digestion to be carried out simultaneously in separate blocks, without one block having to be readjusted between two methods. For laboratories with high sample throughput and varying digestion methods, this significantly reduces the overall turnaround time compared with a single-block instrument, as there is no longer any need to wait for a new target temperature to be reached. Precise temperature range, user-friendly operation Both blocks cover a temperature range 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 per block cover routine and specialised methods, each block adjustable independently of the others. 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 287 x 290 x 146 mm and a weight of 4,200 g (gross, including packaging), the VARIO 4 takes up only slightly more floor space than the single-block models in the range, despite having double the block capacity. For the additional capacity of 24 positions instead of 12, this represents a reasonable space requirement on the workbench, particularly when compared to two separately installed single-block units. 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 facilitates integration with existing laboratory software and the transfer of test reports from both blocks. 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. Reliable in everyday laboratory use The VARIO 4 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 during continuous operation with two blocks running simultaneously. Position within the NANOCOLOR VARIO family Within the NANOCOLOR VARIO family, the VARIO 4, with 24 positions and two independent blocks, is the model with the largest capacity. The VARIO Mini, with 6 positions, is significantly better suited to mobile use on site; for standard laboratory routines, the VARIO C2 with 12 positions is ideal; and for larger digestion vessels, the VARIO C2 M with 22 mm bores and 10 positions is the best choice. Those who require shorter cooling times in addition to high throughput will find the VARIO HC with active cooling a suitable option, although it features just one block and 12 positions instead of two blocks. Typical areas of application The VARIO 4 is designed for laboratories with high throughput and simultaneous method requirements, for example where a contract laboratory needs to process several client orders with different parameters simultaneously in the morning, rather than running them one after the other using a single block: High sample throughput in large sewage treatment works and central wastewater laboratories Simultaneous COD and nitrogen or phosphorus digestion in separate blocks Environmental and contract laboratories processing multiple methods and client orders in parallel Drinking water suppliers with an extensive range of parameters and fixed processing times University laboratories and training centres where several research groups require different digestion methods simultaneously Technical details Positions/boreholes2 × 12 × 16 mm outer diameter (24 in total, two independent blocks) Temperature range40–160 °C, adjustable in 1 °C increments Preset temperatures70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C (+ 6 freely definable slots) Temperature stability±1 °C (in accordance with DIN, EN, ISO, EPA) Dimensions (L×W×H)287 × 290 × 146 mm Weight (gross, including packaging)4,200 g Power supply110–230 V AC, 50/60 Hz, 300/550 W DisplayBacklit colour touchscreen, icon-based menu InterfacesRS232, USB-A, USB-B Operating conditions10–40 °C, max. 80% relative humidity (non-condensing) CertificationCE Contents 1x NANOCOLOR VARIO 4 thermoblock 1x mains cable 2x Fold-down protective covers (one per thermoblock) 1x user manual 1x data cable 1x software DVD 1x certificate Customised requirements & procurement service Do you need suitable NANOCOLOR cuvette tests, a T-Set for automatic calibration or accessories for other thermoblock models? Our procurement service will be happy to help you choose the right products.
Macherey-Nagel NANOCOLOR VARIO HC Thermoblock, 12 positions, active cooling, 919330
The process doesn’t end with digestion; there’s still more to do before measurement: before a sample can be analysed photometrically, it must first cool back down to room temperature; with a passively cooling thermoblock, this can take a considerable amount of time, depending on the number of samples. The Macherey-Nagel NANOCOLOR VARIO HC thermoblock shortens precisely this step: an active cooling function cools the samples down specifically after digestion, rather than waiting for passive cooling. This is particularly noticeable in laboratories with high sample throughput and tight timeframes, for example when results must be available on the same day and the number of samples is simply too high for passive cooling. This time saving is particularly noticeable in the daily workflow of laboratories with fixed deadlines for test reports. Active cooling for shorter overall cycle times Instead of waiting passively for the samples to return to room temperature after digestion, the VARIO HC actively cools them down. This noticeably shortens the total cycle time comprising digestion and cooling, thereby increasing the potential sample throughput per working day, particularly during batch analyses involving many consecutive samples. The power supply is designed accordingly: 150 W for the heating function and 550 W for active cooling, ensuring that the cooling phase also proceeds swiftly and does not become a new time-consuming step in the process. 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 routine parameters such as COD, TOC, total nitrogen, total phosphorus and metals. 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 287 x 290 x 146 mm and a weight of 4,050 g (gross, including packaging), the VARIO HC requires no additional floor space compared with the VARIO 4, despite its integrated cooling function. The additional power consumption for active cooling does not result in a larger footprint, meaning the VARIO HC can be swapped for the VARIO 4 without any space constraints. Network-ready and documentation-capable 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 facilitates integration with existing laboratory software and the sharing of test reports as part of quality assurance. 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. Reliable in everyday laboratory use The VARIO HC 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). Position within the NANOCOLOR VARIO family The VARIO HC shares the 12 positions and the temperature range of 40 to 160 °C with the VARIO C2, but adds an active cooling function. Those who do not require active cooling will find the VARIO C2 sufficient and will save on the higher power consumption associated with the cooling function. For mobile use, the VARIO Mini with 6 positions is available; for larger digestion vessels, the VARIO C2 M with 22 mm bores; and for parallel methods requiring even higher capacity, the VARIO 4 with two independent blocks and 24 positions. Typical areas of application The VARIO HC is suitable for laboratories where it is not just the digestion itself that counts, but the entire time taken to obtain the measurement result – for example, when a contract laboratory needs to analyse a large series of samples on the same day and report the results back to the client without having to wait for the slow passive cooling of the cuvettes: Batch measurements with high sample throughput and tight time windows until results are transmitted Sewage treatment works and wastewater treatment plants with a cyclical sample flow, for example at fixed sampling times Contract laboratories that need to deliver results on the same day Environmental laboratories processing several sample series in parallel with tightly scheduled time windows each day COD, TOC, total nitrogen, total phosphorus and metal digestion followed by rapid photometric analysis Technical details Positions/boreholes12 × 16 mm outer diameter Temperature range40–160 °C, adjustable in 1 °C increments Preset temperatures70 °C, 100 °C, 120 °C, 148 °C, 150 °C, 160 °C (+ 6 freely definable slots) Temperature stability±1 °C (in accordance with DIN, EN, ISO, EPA) Active coolingYes, to reduce the overall cycle time Dimensions (L×W×H)287 × 290 × 146 mm Weight (gross, including packaging)4,050 g Power supply110–230 V AC, 50/60 Hz, 150 W (heating) / 550 W (active cooling) DisplayBacklit colour touchscreen, icon-based menu InterfacesRS232, USB-A, USB-B Operating conditions10–40 °C, max. 80% relative humidity (non-condensing) CertificationCE Contents 1x NANOCOLOR VARIO HC 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 need suitable NANOCOLOR cuvette tests, a T-Set for automatic calibration or accessories for other thermoblock models? Our procurement service will be happy to help you choose the right products.