Rotary Sample Divider 2-10L
For the representative rotary dividing of 2-10 litres with custom bucket and bottle combinations
For the representative dividing of bulk samples from 2-10L. Three modules in one machine:
- Continuous process: Continuous module using a vibratory feeder and a sample cutter with an outlet to take one or more representative sample and to collect the reject
- Bucket module: Bucket module using a vibratory feeder and a set of sample buckets to divide the total granular
- Bottle module: Bottle module using a vibratory feeder and a set of sample bottles to divide the total powder sample amount into (4,6,8,10 or more individual samples)
The feed sample is fed at a controlled rate as a falling stream that is divided either into one part or into equal segments by the action of a "circle" of segmental buckets being rotated beneath the stream. The unit operates in accordance with internationally recognised sampling protocols.
Features and Benefits
- 3 modules in one machine enables continuous sampling and "batch-processing"
- Due to a range of various bucket sizes the sampling of different volumes is possible (no additional machine necessary)
- The individual sample volumes are variable. This can be achieved due to a wide range of available segment sizes.
- Choice of sample container types and materials such as steel buckets and bottles
- All parts which are in contact with the sample are made of stainless steel
- Electromagnetic adjustable vibratory feeder
- Ergonomic and flexible handling in variable working heights due to mobile hydraulic pallet truck
- The rotary table can be rotated manually in order to move each bucket to the desired position
Technical Specifications
| Applications | sampling, sample division, sample reduction |
| Applications fields | Agriculture | Biology | Chemistry / Plastics | Construction Materials | Engineering / Electronics | Environment / Recycling | Geology / Metallurgy | Glass / Ceramics | Medicine / Pharmaceuticals | Mining and Mineral Processing | Cement and Building Materials Industry | Food and Feed Production | Environmental Labs (e.g. Soil and Waste Analysis) |
| Working principle | The rotary sample divider ensures precise and reproducible sample division by evenly distributing bulk material through a rotating feed system into multiple collecting containers. As the sample flows onto the rotating dividing head, it is split into representative portions according to the selected dividing module and ratio. This process guarantees dust-free, uniform, and reproducible division of powdered or granular materials, providing a representative sample for accurate analysis. |
| Maximum feed size* | ≤19 mm |
| Batch size / feed quantity* | depending on configuration: up to 2 L / 10 L |
| Throughput | depending on configuration: up to 2 L / 10 L |
| Speed setting | 18-53 rpm |
| Number of divisions | 1- 20 (customers requirement and limited by particle size) Configuration:
Batch:
|
| Collector Volume | sample collector volume depending on segment size |
| Reject Volume | depending on configuration: up to 2 L / 10 L |
| Hopper volume | depending on configuration: up to 2 L / 10 L |
| Sample volume | depending on configuration: up to 2 L / 10 L |
| Material transport method | Vibrating chute |
| Product-contact parts | Stainless steel. Other materials on request |
| Setting adjustment method | Touchscreen-HMI with direct PLC-communication |
| Setting options | Rotation speed, vibration frequency |
| Fuses | 10amp glass fuse |
| Noise emission | 65–72 dB(A) |
| Electrical requirements | 0,75kW |
| Power supply | 110-120V or 220-240V, 50/60 Hz |
| Current | 6,3A |
| Power connection | 1 phase |
| Dust extraction point | 1 |
| Standard | CE |
| Protection code | IP54 |
| Weight | 130kg |
| Dimensions (width x length x height) | 705 x 670 x 1062mm (with funnel) |
Rotary sample divider working principle
The LAARMANN Rotary Sample Divider 2–10L divides bulk samples into representative sub-samples using a controlled falling stream and a rotating collector system. Material is loaded into the infeed funnel and metered by a frequency-controlled vibratory feeder to create a stable, evenly spread stream. The stream is then intercepted by a rotating “circle” of collectors—configured as a continuous cutting module (one or more cuts plus reject), a bucket module for granular segment collection, or a bottle module for powders. By matching feeder settings and rotary table speed (18–53 rpm) to the material characteristics, the divider produces uniform, reproducible splits across 4/6/8/10 or customized divisions, while stainless steel product-contact parts help minimize contamination.
Custom bucket segments made for your application
Custom-made buckets or bottles for rotary sampling dividers are specifically designed to meet the unique requirements of diverse sampling applications. These containers are precision-engineered to fit seamlessly into the divider's collection system, ensuring accurate and consistent sample distribution. Made from durable materials such as stainless steel, polypropylene, or other robust composites, they are built to withstand the rigorous demands of handling a wide range of materials, from fine powders to coarse aggregates. Customization options include varying sizes, shapes, and materials to accommodate specific sample volumes, chemical compatibility, and operational conditions. These tailored solutions not only improve the efficiency of sample collection but also enhance the reliability of analytical results by minimizing cross-contamination and ensuring uniformity across collected portions.
Rotary Sample divider Project integration
A rotary sample divider is a precision device used in sampling installations to ensure accurate, representative sample splitting from a bulk material stream. This machine operates by evenly distributing material through a rotating system of slots or collection containers, which systematically divide the sample into smaller, uniform portions. Its continuous, circular motion helps eliminate biases associated with manual sampling, resulting in highly reproducible results. Rotary sample dividers are commonly employed in industries such as mining, agriculture, and pharmaceuticals, where accurate sample preparation is critical for quality control, analysis, and research. Designed for robust operation, these machines handle a wide range of materials, from powders to granular substances, making them essential for reliable and efficient sample processing.
For more tailor made sampling solution projects and installations visit our projects page
Rotary sample divider and jaw crusher combination
laboratories can achieve high sample preparation efficiency with this set up. The jaw crusher reduces the sample size to a suitable range for subsequent analysis, while the rotary sample divider ensures that the divided samples are representative of the original bulk material.
The combination of a jaw crusher and a rotary sample divider helps maintain consistency and accuracy in sample preparation. This is essential for obtaining reliable analytical results in various laboratory applications. Using a combination of a jaw crusher and a rotary sample divider can reduce handling time and streamline the sample preparation process. Laboratories can process larger sample volumes more efficiently, saving time and resources.
The combination setup is versatile and can be used for various types of sample materials, including rocks, ores, minerals, and other solid materials. This versatility makes it suitable for a wide range of laboratory applications.
Rotary Sample Divider 2-10L FAQ (Frequently Asked Questions)
Bucket module: split granular material into bucket segments (batch).
Bottle module: split powders into bottles/vials (batch).
Applications
- Obtain accurate sub-samples from bulk materials for lab testing.
- Support quality control by ensuring consistent sample representativity.
- Minimize sampling bias in heterogeneous material mixtures.
- Prepare samples for chemical analysis, particle size testing, or moisture content checks.
Visit our Applications page for our database of specific applications