IKA S 25 KD - LR - 18 G Dispersing tool for laboratory reactors, vacuum-tight, Ø 18 mm, 0025007071

Scale-up and thermodynamic process control In demanding chemical synthesis, pharmaceutical formulation development and cosmetic polymer processing, the precise reproducibility of thermodynamic and rheological parameters is absolutely essential. The IKA LR 1000 control system is a highly integrated, modular reactor platform that physically simulates the fluid dynamic and thermal behaviour of large-scale industrial production plants on a 1,000-millilitre scale. The system consists of a processor-controlled base station with integrated heating, a borosilicate glass reactor suitable for high vacuum, and high-precision sensor technology. The direct thermal coupling of the heating plate to the reactor base enables a substantial energy input, which heats the medium to precisely defined process temperatures of up to 120 °C. This allows complex endothermic reactions to be carried out or high-molecular-weight resins to be melted under strictly controlled laboratory conditions. Rheology and wall-near mixing kinetics The processing of non-Newtonian, structurally viscous fluids requires specialised mechanical energy input. The system is factory-fitted with the IKA LR 1000.10 anchor stirrer. This stirring element, manufactured from AISI 316L stainless steel, induces immense radial and tangential shear stresses in the medium. The integrated PEEK scrapers continuously abrade the inner wall of the reactor vessel. This kinematics mechanically breaks down the highly insulating thermal boundary layer (hotspots) on the heated glass wall and maximises the convective heat transfer coefficient in matrices with a dynamic viscosity of up to 100,000 mPa·s. To ensure the gentle discharge of these viscous gels and pastes, the reactor vessel (LR 1000.3) included in the set features a dead-space-free bottom drain valve at the lowest point of the vessel. Metrological data acquisition and pH integration The key difference from the “basic” version lies in the metrological superiority of the “control” infrastructure. The base station features a multilingual TFT display which not only controls the rotation speed (10 to 150 rpm) and the heating power, but also acts as a central hub for chemical sensor technology. The system allows the direct connection of pH electrodes for in-situ monitoring of acid-base reactions. The temperature at the core of the medium is simultaneously recorded by the supplied PT 100.30 sensor. An integrated weighing algorithm also continuously measures changes in the torque trend of the stirring mechanism, enabling highly precise, indirect real-time analysis of increases in viscosity (for example, during polymerisation processes). Vacuum architecture and digital system integration Control of the reactor atmosphere is essential for the bubble-free degassing of emulsions or for moisture-sensitive reactions. The system is designed for hermetically sealed vacuum operation. Standard-threaded ports (NS 14 and NS 29) in the lid allow for the gas-tight insertion of sensors and the connection of vacuum pumps or inert gas lines. For certified laboratories (GLP/GMP), the “control” system offers seamless digital traceability. The integrated USB and RS-232 interfaces allow the entire reactor to be connected to a PC in a tamper-proof manner. Using the IKA labworldsoft software, complex temperature and speed ramps can be programmed, and all metrological measurement data (temperature, pH value, torque) can be archived with precise time stamps for official QM audits. Technical details Maximum working volume: 1000 ml Max. operating temperature of the product: 120 °C Viscosity limit: 100,000 mPa·s Rotational speed range: 10 – 150 rpm Torque trend measurement: Integrated for rheological monitoring Temperature measurement: Integrated (including PT 100.30 sensor) pH measurement: Connection for external pH electrode provided (BNC) Vacuum compatibility: System is approved for vacuum operation Product discharge: Via a bottom-mounted drain valve (LR 1000.3) Display: High-resolution TFT display for process visualisation Materials (in contact with the medium): Borosilicate glass 3.3, stainless steel 1.4404, PEEK, PTFE, FFPM Interfaces: USB, RS 232 (compatible with IKA labworldsoft) Permissible ambient temperature: 5 – 40 °C Protection class (according to DIN EN 60529): IP 21 Scope of delivery 1 x IKA LR 1000 control base station 1 x IKA LR 1000.3 laboratory reactor vessel (with bottom drain valve) 1 x IKA LR 1000.10 anchor stirrer (with PEEK scrapers) 1 x IKA PT 100.30 temperature probe 1 x sensor cable (for pH and temperature) 1 x USB cable for data logging 1 x Detailed operating instructions Customised requirements & accessories The LR 1000 control system is supplied as a fully functional complete package. However, to upgrade it to a fully automated synthesis unit, we recommend the following process-related additions: To record acid-base titrations, a separate pH electrode with a BNC connector is required. For bubble-free dispersion under high vacuum, you will also require the LR 1000.41 shaft holder in combination with a T 25 digital LR drive. Please contact our procurement service at any time regarding the complex software integration (IKA labworldsoft) and the fluid dynamics configuration of your specific reactor.

Anyone wishing to prepare emulsions, suspensions or nanoparticle formulations not in an open beaker but in a closed, temperature-controlled laboratory reactor will need a drive that can be integrated into this system. The IKA T 25 digital LR disperser (0020008820) is designed precisely for this purpose: a dedicated drive unit for high-speed dispersion in laboratory reactors, with a volume range of 1 to 2,000 millilitres (based on water) and a speed range of 600 to 25,000 revolutions per minute. Unlike a benchtop disperser for open beakers, it is designed from the outset for mechanical integration into closed reactor systems and is not intended as a stand-alone, ready-to-use laboratory instrument. Powerful drive with infinitely variable speed control The 800-watt motor (500 watts output power) covers a continuously and electronically adjustable speed range from 600 to 25,000 revolutions per minute, displayed via a digital LED display with a deviation of just 1 per cent from the set target speed. In combination with the appropriate IKA dispersion tools, high shear forces are generated in the narrow shear gap between the rotor and stator, which break down particles and droplets and homogenise liquid phases – the classic operating principle of rotor-stator dispersers. The maximum permissible viscosity of the medium is 5,000 mPa·s, a guideline value that must be taken into account when selecting the dispersing tool and controlling the process. Designed for installation in laboratory reactor systems Unlike free-standing bench-top dispersers, the T 25 digital LR is designed as a drive unit only, which can be mechanically coupled with the special dispersing tools of the KD-LR series. These tools are designed for use in closed laboratory reactors such as the IKA LR 1000 and, thanks to high-quality shaft seals, enable operation under vacuum – which is useful for preventing aerosol and foam formation in media containing surfactants or for processing oxidation-sensitive batches under an inert atmosphere. Neither the dispersing tool nor the reactor itself is included with the T 25 digital LR; both must be purchased separately to suit the specific application. Electronic overload protection and digital display An integrated microprocessor maintains the set speed even when the resistance of the medium changes, for example if the viscosity of a batch increases during the reaction. If the stirring tool becomes suddenly blocked, for example by a jammed particle, an electronic overload protection system switches off the motor and displays an error code; this protects both the motor and the coupled dispersing tool. The unit is designed for continuous operation with a permissible duty cycle of 100 per cent. Compact design for mounting on a reactor stand Measuring 87 x 271 x 106 millimetres and weighing 2.5 kilograms, the T 25 digital LR can be mounted on a reactor stand to save space. The noise level without the dispersing tool fitted is 75 dB(A). The housing is rated to protection class IP 20 and approved for an ambient temperature of 5 to 40 degrees Celsius. It can be connected to either 220 to 240 volts or 100 to 120 volts at 50 or 60 hertz. Selecting the appropriate dispersing tool Which KD-LR tool is suitable in each individual case depends on the reactor volume, the desired immersion depth and the viscosity range of the medium. The tools in this series feature an extended design so that, even in larger reaction vessels, they reach right down to the bottom of the vessel and continue to disperse effectively there, rather than leaving dead volume unused. As the T 25 digital LR is designed as a drive for different reactor sizes and tool variants, the same drive can often continue to be used when process requirements change, whilst only the dispersing tool is replaced. Typical applications As a drive unit for laboratory reactors, the T 25 digital LR is used wherever dispersion processes must take place under controlled, closed conditions: Production of emulsions and creams under air-exclusion conditions in closed reactors Dispersion and homogenisation of suspensions with controlled temperature regulation Scale-up trials between open beaker stirring and pilot reactors Production of finely dispersed systems with limited sample volumes from 1 millilitre Process development in the pharmaceutical and fine chemicals industries with requirements for reproducibility Technical details Product typeDrive unit for dispersion tools in laboratory reactors Volume range (H₂O)1 to 2,000 ml Motor power (input / output)800 W / 500 W Speed range600 to 25,000 rpm, electronically continuously adjustable Speed deviation1 % Speed displayLED display Maximum permissible viscosity of the medium5,000 mPa·s Noise level (without dispersing tool)75 dB(A) Permissible duty cycle100 % (continuous operation) Motor protectionElectronic overload protection with error code display Dimensions (W x H x D)87 x 271 x 106 mm Arm length / Arm diameter160 mm / 13 mm Weight2.5 kg Protection class (to DIN EN 60529)IP 20 Permissible ambient temperature5 to 40 °C Power supply220 to 240 V or 100 to 120 V, 50/60 Hz Contents of delivery 1 x IKA T 25 digital LR drive unit 1 x mains lead for IT equipment 1 x operating instructions Not included are the required dispersing tool from the KD-LR series, the laboratory reactor itself, and a stand for mounting the drive unit. These components must be procured separately to suit the specific application. Customised requirements & procurement service As the T 25 digital LR is designed purely as a drive unit, you will also need a suitable dispersing tool from the KD-LR series and a stand solution to secure the drive in order to operate it on your laboratory reactor. Through our procurement service, we can assist you in selecting the appropriate dispersing tool for your specific application, as well as stand materials, spare parts and accessories for integration into existing reactor systems. Further information and contact details can be found at lt-laborhandel.de/service.

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 degrees Celsius. 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. Anchor stirrer and 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 per cent 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 degrees Celsius, while the heating plate itself can reach temperatures of up to 180 degrees Celsius. 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 degrees Celsius, the permissible relative humidity a maximum of 80 per cent. 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 volume1000 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 power1000 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 lt-laborhandel.com/service.