IKA NANOSTAR 7.5 digital stirrer, overhead stirrer, 5 L, 0025004356
€754.50
% Manufacturer's RRP: €1,006.00 25% below manufacturer's RRP
- Extremely compact overhead stirrer for confined spaces in the fume hood
- Brushless BLDC motor delivers a constant torque of 7.5 Ncm with a capacity of up to 5 litres
- Automatic speed control maintains the set speed even when viscosity varies
- A hollow shaft that can be passed through allows the height of the stirring tool to be adjusted without shortening it
- Seamless glass front and IP 54 rating; resistant to solvents and moisture
- Electronic overload and overtemperature protection
ⓘ This product description has been translated from German using AI. Despite careful review, we do not guarantee that the translation is error-free; in case of doubt, the German version shall prevail.
Product information "IKA NANOSTAR 7.5 digital stirrer, overhead stirrer, 5 L, 0025004356"
In microchemical synthesis, during parallel sample preparation or when working under very cramped fume hoods, the space required by laboratory instruments is often the limiting factor. The IKA NANOSTAR 7.5 digital stirrer (MPN 0025004356) is a compact overhead stirrer for media with a volume of up to 5 litres (based on the viscosity of water), which it can homogenise, disperse or dissolve.
Constant torque thanks to a brushless DC motor
At the heart of the NANOSTAR 7.5 digital is a brushless DC motor (BLDC technology), which operates with low wear and delivers a constant torque of 7.5 Ncm at the stirring shaft. If the viscosity of the medium changes during stirring, for example, due to an increase in viscosity during polymerisation or temperature fluctuations, the integrated electronics automatically adjust the power consumption. The set speed, within the range of 50 to 2,000 revolutions per minute, thus remains constant, which supports reproducible results. The maximum viscosity of the medium may be up to 4,000 mPas.
Hollow shaft and chemical-resistant glass front
When changing mixing vessels or dealing with varying fill levels, the stirring tool often needs to be adjusted in height. The NANOSTAR 7.5 digital features a continuous hollow shaft with an internal diameter of 8.5 millimetres, through which the shaft of the stirring tool can be easily pushed when the unit is at a standstill, without the need to cut the stirring shafts to length. The unit is operated via a rotary knob, and an LED glass display shows the speed. The seamless real-glass front is resistant to organic solvents, acid vapours and alkalis, and can therefore be thoroughly cleaned and decontaminated.
IP 54 rating and digital connection via USB
The housing of the NANOSTAR 7.5 digital is protected against dust and splashing water from all directions according to degree of protection IP 54. An electronic overload and overtemperature protection system automatically switches off the motor if the stirring element becomes blocked. The micro-USB port on the rear can be used to install firmware updates and connect the device to the Labworldsoft laboratory equipment software to document torque trends.
Typical applications
With its compact design and constantly regulated torque, the NANOSTAR 7.5 digital is suitable for:
- Microchemical syntheses and reactions where space is limited within a fume hood
- Parallel sample preparation at several workstations simultaneously
- Homogenisation and dispersion of small volumes up to 5 litres
- Stirring processes involving changing viscosity, such as during polymerisation
Selection guide: mechanical or electronic stirring
Within the IKA range of stirrers, the NANOSTAR 7.5 digital described here, with its electronically controlled BLDC drive, is contrasted by the mechanically controlled RW 20 digital. For compact volumes up to 5 litres and confined spaces, the NANOSTAR 7.5 digital described here is suitable. If, on the other hand, volumes of up to 20 litres need to be stirred or high torque is required in the lower speed range, the RW 20 digital with its mechanical gearbox is the more suitable alternative.
Distinction from larger electronic overhead stirrers
If a larger stirring volume or higher torque is required than the NANOSTAR 7.5 digital offers with its 5 litres and 7.5 Ncm, IKA offers further electronically controlled overhead stirrers in larger sizes with the Ministar and Microstar series, which can be viewed in our range of stirring and mixing technology. For compact applications with limited space, however, the NANOSTAR 7.5 digital described here remains a particularly space-saving option in IKA’s range of electronic stirrers.
Technical details
| Max. stirring volume (H₂O) | 5 l |
| Max. viscosity | 4,000 mPas |
| Motor type | brushless DC motor (BLDC) |
| Speed range | 0/50 to 2,000 rpm |
| Speed adjustment | Rotary knob |
| Setting accuracy for speed | ±1 rpm |
| Speed measurement deviation | ±1 % (n > 300 rpm) / ±3 rpm (n < 300 rpm) |
| Speed display | LED glass display |
| Motor power, input / output | 32 W / 22 W |
| Rated torque | 0.075 Nm |
| Max. torque at the stirring shaft | 7.5 Ncm |
| Max. power at the stirring shaft | 15.7 W |
| Permissible duty cycle | 100 % |
| Agitator tool mounting | Chuck, clamping range 0.5 to 8.2 mm |
| Hollow shaft, internal diameter | 8.5 mm, can be inserted whilst the unit is stationary |
| Mounting on stand | Extension arm, Ø 13 mm, length 160 mm |
| Housing material | Coated cast aluminium / thermoplastic |
| Interface | USB (Micro-USB) |
| Standby power consumption | 0.3 W |
| Protection rating | IP 54 in accordance with DIN EN 60529 |
| Dimensions (W x H x D) | 53 x 147 x 130 mm |
| Weight | 0.8 kg |
| Connected load | 100 to 240 V, 50/60 Hz, 32 W |
Scope of delivery
- 1 x NANOSTAR 7.5 digital (drive unit)
- 1 x R 300 stirrer shaft guard
- 2 x fixing screws for R 300
- 1 x chuck key
A suitable stirring tool, a boss head and a stand are required for operation but are not included in the scope of delivery.
Use, installation, maintenance and disposal
Thanks to its IP 54 rating, the NANOSTAR 7.5 digital can withstand splash water and dust in a normal laboratory environment. The seamless glass front can be decontaminated using standard solvents, acids or alkalis without cleaning agents penetrating the joints or buttons. To ensure secure, vibration-free mounting, the motor should be fitted to a sufficiently stable stand arm. At the end of its service life, as an electrical appliance, the device must not be disposed of with household waste but must be placed in the separate collection scheme for waste electrical and electronic equipment.
Warranty
Manufacturer’s warranty from IKA: 2 years, extended to 3 years upon registration at ika.com/register within 90 days of purchase.
Regulatory information
This device is an electrical appliance within the meaning of the German Electrical and Electronic Equipment Act (ElektroG). The WEEE registration number of the manufacturer, IKA, is DE 66784213. Information on the return of old appliances can be found on our page Environment and disposal.
Individual requirements and procurement service
The NANOSTAR 7.5 digital is a drive motor only. To achieve suitable mixing in terms of fluid dynamics within a beaker or reaction vessel, a stirring device tailored to the sample is required, such as a propeller, centrifugal or anchor stirrer from the IKA R-series. For secure attachment to the stand arm, we also recommend a sturdy plate stand with a suitable boss head. Through our procurement service, we would be happy to put together a suitable stirring setup for you from our range of stirring and mixing equipment.
Frequently Asked Questions
Is a stirring tool included in the scope of delivery?
No, a stirring tool, boss head and stand are required for operation but are not included in the scope of delivery.
What is the maximum stirring volume possible with the NANOSTAR 7.5 digital?
Up to 5 litres of water, with a maximum permissible viscosity of 4,000 mPas.
How is the speed kept constant when the viscosity changes?
The integrated electronics of the brushless DC motor automatically adjust the power consumption.
Can the stirring tool be fitted without shortening the shaft?
Yes, via the push-through hollow shaft with an 8.5-millimetre internal diameter, which can be adjusted whilst the unit is stationary.
Is the unit suitable for use with solvents?
The seamless glass front is resistant to organic solvents, acid vapours and alkalis.
Is there a mechanically controlled model for larger mixing volumes?
For mixing volumes of up to 20 litres, the mechanically controlled RW 20 digital is a suitable option.
Matching accessories
The IKA R 1330 anchor stirrer (MPN 0002022300) is a stirring element made of stainless steel 1.4571 for overhead stirrers. It has a stirrer diameter of 45 mm and a shaft with a diameter of 8 mm and a length of 350 mm. It is intended for medium to highly viscous media that are stirred at low speeds, up to a maximum of 1,000 rpm.A polymer batch that sits thick in the vessel, or a mixture with a high mineral content that is to stay evenly distributed: the R 1330 is intended for tasks like these.Tangential flow of the anchor stirrer with a high shear rate at the edgeThe anchor stirrer moves the medium tangentially, that is, in the circumferential direction around the stirrer axis, and not axially like a propeller stirrer. The shear rate is high at the edge of the stirrer, and few deposits are left on the vessel wall. With viscous batches this matters, because material on the wall is withdrawn from the mixing process.It is used at low speeds. The stirrer diameter of 45 mm determines the minimum width of the opening of the stirring vessel.Typical applicationsHomogenising medium to highly viscous liquids in the laboratoryStirring in polymer reactionsEvenly distributing high mineral content in liquidsBatches where little material should be deposited on the vessel wallWorking at low speeds on an overhead stirrerSuitable for IKA overhead stirrers with an 8 mm chuckThe shaft with a diameter of 8 mm fits into chucks for an 8 mm shaft. These include the IKA overhead stirrers EUROSTAR 20, 40, 60, 100, 200 and 400 (digital and control), RW 20 digital, MINISTAR 20, 40 and 80 digital, MICROSTAR 7.5 digital and NANOSTAR 7.5 digital.Whether a stirrer drives the anchor stirrer safely in your medium depends on the viscosity and on the torque of the stirrer. The more viscous the batch, the more torque is required. Therefore check before purchase whether your device is sufficient for your batch and whether the chuck accepts a shaft of 8 mm.MaterialThe wetted parts of the R 1330 are made of stainless steel 1.4571. The weight of the stirrer is 0.151 kg.Technical detailsTypeAnchor stirrerStirrer diameter45 mmShaft diameter8 mmShaft length350 mmMaximum speed1,000 rpmFlowtangentialSuitable formedium to highly viscous mediaMaterial, wetted partsStainless steel 1.4571Weight0.151 kgMountChuck for 8 mm shaftScope of delivery1 x IKA R 1330 anchor stirrer (MPN 0002022300). The overhead stirrer is not included in the scope of delivery.Individual requirements and procurement serviceIf your medium requires a different flow pattern, the IKA R 1342 propeller stirrer is also available for the RW 20 digital, for low to medium viscosity liquids. A stirrer shaft protector, for example the IKA R 401, also fits the overhead stirrer setup. Our procurement service helps with the choice of the suitable stirring element and the overhead stirrer for your batch.
The IKA R 301 stirrer shaft guard (MPN 0002603000) is a mechanical protective device for the operation of laboratory overhead stirrers. During intensive mixing, dispersing or homogenisation processes, considerable kinetic forces act on rotating stirrer shafts. This professional shaft guard forms a physical barrier that protects laboratory staff from accidental contact with the rotating parts. It reduces the risk of clothing, hair or laboratory gloves being drawn in, making the safety device a key component in risk assessments and in implementing national and international health and safety requirements. Stepless length adjustment for flexible experimental set-ups From a process engineering perspective, the R 301 model excels thanks to its high degree of telescopic flexibility. The guard can be adjusted steplessly along its axis within a length range of 190 to 310 mm and locked into place precisely. This variable geometry allows for precise adaptation to different shaft lengths, vessel heights and varying immersion depths of the stirring elements. Laboratories thus benefit from a highly adaptable protective system that can be flexibly integrated into changing experimental set-ups without compromising workplace ergonomics. Unrestricted process control thanks to a high-quality Plexiglas matrix The cylindrical protective screen is made entirely from a high-purity, mechanically stable Plexiglas matrix. This material combines minimal weight with outstanding optical clarity. Laboratory staff are able to monitor the mixture, transient flow patterns, phase transitions or any delayed boiling in the sample vessel at all times without restrictions. At the same time, the Plexiglas structure offers effective protection against transient media splashes and can be cleaned quickly and without leaving any residue. Technical details Design & Material Product designation: R 301 Operating principle: Physical shielding of rotating drive components Protective screen material: Highly transparent, impact-resistant Plexiglas Length adjustability: Infinitely adjustable axially from 190 to 310 mm Optical properties: Visual process monitoring without distortion Compatibility & Installation Direct mounting on the overhead stirrer: Suitable for IKA RW 20 digital, RW 28 digital and the EUROSTAR series except EUROSTAR 400 Mounting with accessories (R 301.1 stand mount required): For compact models such as the IKA NANOSTAR 7.5 digital, MINISTAR series, MICROSTAR series and EUROSTAR 400 Exclusion criterion: Not compatible with the RW 47 D large-scale stirrer (the R 302 variant is required for this) Customs tariff number (HS Code): 84799070 Scope of delivery 1 x IKA R 301 stirrer shaft guard (MPN: 0002603000) 1 x Mounting and fixing element set 1 x Quick guide / Safety guide for accident prevention in the laboratory Individual requirements & accessories The following accessories for the stirrer are also available: R 301.1 stand mount: A required accessory for the stable, mechanical fixing of the stirrer shaft guard to compact stirrer drives such as the MINISTAR or MICROSTAR series. Overhead stirrers: Suitable for the reliable IKA RW 20 digital drive systems or the high-end models of the EUROSTAR series (basic and control). Laboratory stands & boss heads: Stable plate and telescopic stands (e.g. R 2722) as well as robust boss heads (e.g. R 270) for vibration-free securing of the entire stirring assembly. Make use of our technical B2B procurement service to ensure the reliable design of your laboratory set-ups.