IKA T 25 digital LR disperser, for laboratory reactors, up to 2,000 ml, 0020008820

The IKA LR 1000 control System (MPN 0025001991) is a compact laboratory reactor with a working volume of up to 1,000 millilitres, which combines stirring, heating and digital process documentation in a single unit. Unlike the simpler LR 1000 basic System, this model features a large TFT display showing all process values, supplemented by a connection for external pH measurement and digital interfaces for PC connectivity. The system is suitable for stirring and heating processes involving media with a viscosity of up to 100,000 mPas and operating temperatures of up to 120 °C, for example in chemical synthesis, formulation development or quality control. Thanks to the additional sensor technology, reactions can be monitored and documented much more closely than with a simple magnetic stirrer. Anchor stirrer with PEEK scrapers and torque trend measurement The supplied LR 1000.10 anchor stirrer is fitted with PEEK scrapers which continuously glide along the inner wall of the reactor vessel, thereby preventing product from depositing on the heated glass wall. The speed range extends from 10 to 150 revolutions per minute at a nominal torque of 3 Nm, suitable for media with a viscosity of up to 100,000 mPas. An integrated torque trend measurement indicates how the consistency of the stirred material changes during the process, for example when a solution becomes increasingly viscous or a solid dissolves. Heated reactor vessel with precise temperature control The LR 1000.3 reactor vessel has a maximum capacity of 1,000 millilitres; with a dispersing tool fitted, the minimum volume is 500 millilitres. The heating element at the base of the vessel has a heating power of 1,000 watts and heats the medium to operating temperatures of up to 120 °C, whilst the heating plate itself can reach temperatures of up to 180 °C. The supplied PT 100.30 temperature sensor measures the medium temperature with a resolution of 0.1 Kelvin; the control accuracy is ±0.2 Kelvin, and the setting accuracy is ±1 Kelvin. TFT display, pH connection and digital interfaces A large TFT display shows speed, temperature and other process values in real time. An external pH electrode can be connected via a BNC socket, covering a measurement range from 0 to 14 pH with a resolution of 0.1 pH, allowing acid-base reactions to be monitored directly in the reaction vessel. In addition, the system features an integrated weighing function with a weighing range of up to 2,000 grams at a resolution of 1 gram. An RS 232 interface, a USB port (Micro-B) and Bluetooth are available for connection to a PC for process documentation. Vacuum operation and safety concept The system is designed for operation under vacuum down to 25 mbar; a vacuum valve assembly controls the connection to a vacuum pump. Two hose connections also allow an external cooling medium with a minimum temperature of 3 °C to be connected, for example to cool exothermic reactions in a controlled manner. An adjustable safety circuit monitors the temperature within a range of 47 to 225 °C with a tolerance of ±10 to ±20 Kelvin and automatically switches off the heating if necessary. If the reactor vessel or lid is removed during operation, a safety shut-off is triggered immediately. Difference from the LR 1000 basic System Within the LR 1000 series, the control System is the version with more comprehensive data logging: Whilst the simpler LR 1000 basic System is primarily designed for stirring and heating, the control System adds pH measurement, an integrated weighing function and digital interfaces for process documentation. Anyone requiring comprehensive documentation of temperature, pH and torque curves, for example for internal quality records, is better served by this version than by the basic model. Typical applications The LR 1000 control System is suitable for stirring, heating and documentation tasks on a 1-litre scale, wherever process data needs to be recorded in a traceable manner: Chemical syntheses with temperature control and concurrent pH monitoring Formulation development in the cosmetics and pharmaceutical industries involving process parameters subject to documentation requirements Vacuum-assisted concentration or degassing of solutions and dispersions Polymerisation experiments in which torque trends and viscosity increases are to be monitored simultaneously Quality control with documented temperature and pH profiles for internal release processes Practical courses and further training in which students learn how to operate a fully equipped laboratory reactor Formulation screening, in which several batches with different temperature profiles are compared sequentially Technical details Max. usable volume1,000 ml Minimum volume with dispersing tool500 ml Speed range10 to 150 rpm Rated torque3 Nm Max. viscosity100,000 mPas Operating temperature (medium) max.120 °C Max. heating temperature (heating plate)180 °C Heating power1,000 W Control accuracy (medium)±0.2 K Setting accuracy of target temperature±1 K Achievable vacuum25 mbar Weighing rangeup to 2,000 g, resolution 1 g pH measurement range0 to 14 pH, resolution 0.1 pH Material (parts in contact with the medium)Borosilicate glass 3.3, AISI 316L stainless steel, PEEK, PTFE, FFPM Connections on reactor lid2 x NS 29, 2 x NS 14, 2 x GL 14 DisplayTFT display InterfacesRS 232, USB (Micro-B), Bluetooth Dimensions (W x H x D)443 x 360 x 295 mm Weightapprox. 23 kg Mains voltage230 V, 50/60 Hz Power consumption1,200 W Permissible ambient temperature5 to 40 °C Permissible relative humiditymax. 80 % Scope of delivery 1 x IKA LR 1000 control base station 1 x LR 1000.3 reactor vessel 1 x LR 1000.10 anchor stirrer with PEEK scrapers 1 x PT 100.30 temperature probe with mounting bracket 1 x support rod, 16 mm diameter 2 x hose connectors for cooling medium 1 x USB cable (USB-A to Micro-B, 2 m) Individual requirements and procurement service To help you expand your LR 1000 control System, our procurement service can assist you with additional accessories, such as a pH electrode with a BNC connector, further reactor vessels or dispersing tools for the open lid ports. We are also happy to advise you on spare parts or any queries regarding software integration with your existing laboratory infrastructure. Further information and contact details can be found on our procurement service page.

Anyone developing a chemical reaction on a laboratory scale and later wanting to transfer it to a larger scale needs more than a stirrer display that only reports a trend. The IKA LR-2.ST Starvisc 200 laboratory reactor measures torque and viscosity directly at the STARVISC 200-2.5 control measuring stirrer while the reaction is running, not afterwards on a separate viscometer. This distinguishes it from the four other versions of the LR-2.ST series, which work with EUROSTAR stirrers and a general torque trend display but provide no calibrated measurement. For high-viscosity media up to 100,000 mPas and working volumes of 500 to 2,000 ml, the system therefore delivers reproducible measured values for process development instead of just a rough estimate.The complete stand system is supplied: the LR.SI base component, the HEAD,REACTOR,LR2.10 reactor lid and the STARVISC 200-2.5 control measuring stirrer. The reactor vessel itself is not included in the scope of delivery. The glass vessel is ordered separately to match the required working volume. This applies equally to all five variants of the LR-2.ST series and should be planned for with the first order of a system.True torque and viscosity measurement during the reactionThe STARVISC 200-2.5 control measures torque and the viscosity derived from it in a calibrated way at the stirring shaft, with a maximum value of 200 Ncm. This is exactly what makes the difference from the general torque trend display of the other LR-2.ST variants: there the display shows whether the torque is rising or falling, here there is a reliable measured value that can be documented and taken into an evaluation. For product development in which viscosity profiles during a reaction (for example in polymerisations or when resins cure) decide the process quality, this is the real reason to buy this model within the series. The minimum speed of 6 rpm additionally allows very slow stirring when a reaction tolerates only little shear energy.Temperature range, working volume and vacuum operationThe working volume is between 500 and 2,000 ml. With a dispersing tool, at least 800 ml should be in the vessel so that the shearing action does not run into empty space. The working temperature ranges from -50 to 230 °C, and the telescopic stand has a stroke of 390 mm for different vessel sizes and set-ups. Vacuum operation down to 25 mbar is possible, for example for degassing media or for reactions that are to take place at reduced pressure. The product-contacting parts of the system itself are made of borosilicate glass, FFPM, PTFE and steel 1.4571. The reactor lid has three NS 29/32 openings and two NS 14/23 openings for sensors, additions or a reflux condenser.Reproducibility and documentation of the measured valuesFor process development, besides the measured value itself, it also matters that a stirring experiment can later be repeated identically. Because the STARVISC 200-2.5 control records torque and viscosity continuously, a batch can be evaluated over time and compared with later batches, instead of merely noting a subjective assessment of the stirrer display. When transferring laboratory results to a larger scale, this traceability is often more important than a single measurement, because deviations between two batches only show up in comparison. For laboratories with documented equipment qualification, factory calibration certificates and IQ/OQ documents for the system are also available, see the section on the procurement service. Especially when comparing different recipes or batches, the system thus provides an objective basis on which decisions in the laboratory can be founded, instead of relying on the impression of a single person at the stirrer.Typical applicationsOptimisation and reproduction of chemical reaction, mixing and homogenising processes on a laboratory scaleProduct development requiring documented torque and viscosity measurement during the reaction, for example with polymerisations, resins or adhesivesProcessing of high-viscosity media up to 100,000 mPasReactions under vacuum or reduced pressure, for example for degassingScale-up preparatory work before moving to a larger production scaleSelection guide within the LR-2.ST familyThe LR-2.ST series is available in five versions with the same stand system and reactor lid, but different stirrers. The stirrer determines torque, maximum viscosity and whether a calibrated measurement is possible:VersionStirrer, max. torque, max. viscosity, measuring functionStarvisc 200 (this device)STARVISC 200-2.5 control, 200 Ncm, 100,000 mPas, calibrated torque and viscosity measurementLR-2.ST the High-PerformerEUROSTAR 660 high torque control, 660 Ncm, 150,000 mPas, torque trend display onlyLR-2.ST the AllrounderEUROSTAR 200 control, 200 Ncm, 100,000 mPas, torque trend display onlyLR-2.ST the VersatileEUROSTAR 100 control with clockwise/anticlockwise rotation, 100 Ncm, 70,000 mPas, torque trend display onlyLR-2.ST the Compact PowerEUROSTAR 60 control, 60 Ncm, 50,000 mPas, torque trend display onlyAnyone who actually has to measure and document viscosity during the reaction cannot get around the Starvisc 200 version. If a pure trend display is sufficient and higher torque for very viscous media is wanted instead, the LR-2.ST the High-Performer is the more suitable choice. For applications with lower viscosity requirements and a smaller budget, the LR-2.ST the Allrounder, the LR-2.ST the Versatile and the LR-2.ST the Compact Power are available. The STARVISC 200-2.5 control measuring stirrer is also available separately as a replacement or retrofit part if required.Technical detailsWorking volume500 to 2,000 mlWorking volume with dispersing toolat least 800 mlWorking temperature-50 to 230 °CAchievable vacuum25 mbarMax. viscosity100,000 mPasMin. speed6 rpmTelescopic stand stroke390 mmProduct-contacting materialBorosilicate glass, FFPM, PTFE, steel 1.4571Reactor vessel openings3 x NS 29/32, 2 x NS 14/23Max. torque at the stirring shaft200 NcmPermissible ambient temperature range5 to 40 °CPermissible relative humidity80 %Dimensions (W x H x D)670 x 1240 x 580 mmWeight25 kgScope of delivery1 x LR-2.ST stand system1 x LR.SI base and stand component1 x HEAD,REACTOR,LR2.10 reactor lid1 x STARVISC 200-2.5 control torque measuring stirrerThe reactor vessel is not part of the scope of delivery. The glass vessel is ordered separately to match the required working volume, as are accessories such as stirring elements for other applications, temperature probes, a vacuum pump or a circulating thermostat, if these are not yet available.Use and maintenanceThe system weighs 25 kg and belongs on a stable, level work surface with sufficient load capacity. Before each vacuum operation, a brief visual check of the standard ground joint connections at the lid is worthwhile, as a leak otherwise costs vacuum performance. The permissible ambient temperature range is 5 to 40 °C, the permissible relative humidity 80 %. After stirring high-viscosity or sticky media, the measuring stirrer can be detached from the lid for cleaning without dismantling the entire stand system. When changing between media of different viscosity, it makes sense to check the measuring stirrer for residues before the next batch, because dried-on residues can falsify the torque measurement. At the end of its service life, the system belongs, as electrical equipment, in the separate collection of waste electrical and electronic equipment, not in household waste.Individual requirements and procurement serviceFor the LR-2.ST Starvisc 200, IKA offers an extensive accessory range: reactor vessels in different volumes, further stirring elements such as anchor stirrers or baffles, dispersing tools of the T 25 series, pH and temperature probes, vacuum pumps and controllers, and circulating thermostats for active temperature control. Factory calibration certificates and IQ/OQ documentation are also available if required. Through our procurement service, we support you in putting together the right reactor vessel and further components for your LR-2.ST system. In making the selection we take into account the planned working volume, type of medium and process temperature, so that vessel and drive match each other.Frequently asked questionsIs a reactor vessel included in the scope of delivery?No. The Starvisc 200 is supplied as a stand system with base component, reactor lid and measuring stirrer. The glass vessel is ordered separately to match the working volume.How does the Starvisc 200 differ from the other LR-2.ST models?In the stirrer. Only the Starvisc 200 measures torque and viscosity in a calibrated way during the reaction, while the other four variants show only a general torque trend.Up to what viscosity can it stir?Up to 100,000 mPas, at a maximum torque of 200 Ncm at the stirring shaft.Can the system be operated under vacuum?Yes, down to 25 mbar, for example for degassing media.What working volume is intended?500 to 2,000 ml. With a dispersing tool, at least 800 ml should be in the vessel.How heavy is the system and what should I bear in mind when setting it up?The stand system weighs 25 kg. It belongs on a stable, level work surface that can safely carry this weight.

For stirring and heating processes on the 1-litre scale that do not require pH measurement or digital process documentation, the IKA LR 1000 basic System laboratory reactor (MPN 20119960) offers the basic equipment of the LR 1000 reactor platform. It processes media with a viscosity of up to 100,000 mPas in a working volume of up to 1000 millilitres and heats the medium to working temperatures of up to 120 °C. As the entry-level version of the LR 1000 series, it suits laboratories that need a compact, heated laboratory reactor without the additional sensors of the LR 1000 control System. Operation therefore stays reduced to the essentials: set the speed, set the temperature, stir. Speed control up to 100,000 mPas The speed range of the LR 1000 basic System extends from 10 to 150 revolutions per minute at a rated torque of 3 Nm, with a maximum speed deviation of ±5 revolutions per minute. This allows media with a viscosity of up to 100,000 mPas to be stirred in a controlled way. The system is designed for continuous operation at 100 % duty cycle, so longer reactions or multi-hour stirring processes can be run without interruption. Heated reactor vessel with 1000 millilitres working volume The reactor vessel holds a maximum of 1000 millilitres. With a dispersing tool the minimum volume is 500 millilitres, without a dispersing tool it is 300 millilitres. The heater delivers a heating power of 1000 watts and warms the medium to up to 120 °C, while the heating plate itself can reach temperatures of up to 180 °C. Temperature control works with an accuracy of ±0.2 kelvin at the medium and a setting accuracy of ±1 kelvin for the target temperature. The system is also designed for vacuum operation down to 25 mbar. Compact design with connection for external temperature probes With dimensions of 443 x 360 x 295 millimetres and a weight of around 22 kilograms, the LR 1000 basic System fits into a modest footprint in the laboratory. An external temperature probe can be connected via a PT100 connection, and two additional hose nozzles allow connection of an external cooling medium, for example to cool exothermic reactions in a controlled way. An RS 232 interface and a USB port are available for connection to a PC. Material and resistance The media-contacting parts are made of borosilicate glass 3.3, stainless steel AISI 316L, PTFE and PEEK. The seals are made of FKM and, together with the chemically resistant glass, make the system suitable for both aqueous and solvent-based batches. The permissible ambient temperature is 5 to 40 °C, the permissible relative humidity a maximum of 80 %. Vacuum operation for degassing and solvent-free working In addition to classic stirring and heating at normal pressure, the LR 1000 basic System can also be operated under vacuum down to 25 mbar. This is helpful, for example, when air bubbles are to be removed from a viscous formulation, or when a solvent is to be removed gently at reduced pressure and therefore lower temperature, instead of heating the medium to its boiling point at normal pressure. Difference from the LR 1000 control System The basic System covers the basic stirring and heating functions of the LR 1000 series, but omits the TFT display, pH measurement, integrated weighing function and Bluetooth connection of the LR 1000 control System. For applications where pure temperature and speed control without additional measurement data acquisition is sufficient, the basic System is therefore the more economical choice within the series. Typical applications The LR 1000 basic System is suitable for stirring and heating processes on the 1-litre scale without additional documentation requirements, wherever a solid basic equipment level is sufficient: Stirring and heating reaction batches in chemical synthesis Homogenising and temperature-controlling creams, gels and emulsions in cosmetics development Vacuum-assisted degassing or concentrating of solutions Formulation development in early pharmaceutical development Practical courses and training in which the basic handling of a heated laboratory reactor is taught Routine processes in which temperature and speed must be kept constant and no pH measurement is required Smaller batches in materials development where external temperature monitoring via PT100 is sufficient Preliminary trials to test new recipes before a process is transferred to the more extensively equipped control System Technical details Max. working volume1,000 ml Min. volume with dispersing tool500 ml Min. volume without dispersing tool300 ml Speed range10 to 150 rpm Speed deviationmax. ±5 rpm Rated torque3 Nm Max. viscosity100,000 mPas Working temperature (medium) max.120 °C Heating temperature (heating plate) max.180 °C Heating power1,000 W Control accuracy (medium)±0.2 K Setting accuracy target temperature±1 K Achievable vacuum25 mbar Permissible duty cycle100 % Material (media-contacting parts)Borosilicate glass 3.3, stainless steel AISI 316L, PTFE, PEEK, FKM InterfacesRS 232, USB Connection for external temperature probePT100 Dimensions (W x H x D)443 x 360 x 295 mm Weightapprox. 22 kg Permissible ambient temperature5 to 40 °C Permissible relative humiditymax. 80 % Scope of delivery 1 x IKA LR 1000 basic base station 1 x Reactor vessel 1 x Sensor holder 1 x Temperature probe 1 x Stand rod 2 x Hose nozzles for cooling medium Individual requirements and procurement service To extend the LR 1000 basic System, we support you through our procurement service with additional accessories, for example further reactor vessels, dispersing tools or a move to the more extensively equipped LR 1000 control System. We are also happy to advise you on spare parts. Further information and contact options can be found at our procurement service.