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Dividing

Optimise laboratory processes with Essa® sample dividing equipment

Accurate analysis begins with a representative sample. Streamline your process and enhance your results with smart, efficient sample dividing equipment from FLS. Essa® Rotary Sample Dividers and Riffle Splitters help your analysis get off to the best possible start.

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Key benefits of sample dividing equipment

  • Accurate, representative sample division

    To ensure you get a truly representative sample, we’ve fitted our Essa® Rotary Sample Dividers with vibratory feeders that deliver the samples at a highly consistent rate, improving the reliability of the sub-sample. Plus, they can be easily adjusted to allow for the minimum number of rotations required for accurate sampling that conforms with internationally recognised sampling protocols.

  • Versatile and durable sample dividing technology

    Our dividing equipment accommodates various sample sizes and volumes, with stainless steel components that resist contamination and wear, ensuring longevity and ease of use. We offer mobile, bench-top models, enclosed lab units and open field options.

  • Easy clean, low maintenance, ergonomic use

    Our sample dividers use the whole sample, leaving you with less cleanup, while their safety features and ergonomic design make them user-friendly, boosting laboratory throughput.

Our sample dividing equipment

Essa® RSD Bench Top Splitter

The RSD001 Bench Top Splitter uses rotary sample dividing technology to achieve split ratios from 2 – 50%. With a 1.8L hopper capacity, it's compact, easy to use, and ideal for a variety of industries, including geochemical labs and industrial applications. It features an adjustable electromagnetic vibratory feeder for precise, uniform sample flow. Parameters including feed speed and split ratio can be customised. Its compact, ergonomic design allows for easy setup and relocation, while stainless steel and aluminium construction prevent corrosion and contamination. Compliant with industry standards, this system enhances both operational efficiency and sample quality in diverse lab environments.

Essa® RSD Series Rotary Sample Dividers – Bucket Type

The Essa units provide consistent, mechanically correct sampling. They cut even representations of larger samples according to industry standard sampling guidelines. This is achieved by feeding the entire sample at a controlled rate as a falling stream. The machine then divides this sample into equal segments by the action of a “circle” of segmental buckets being rotated beneath the stream.

The rotary sample divider bucket type range is appropriate for a wide range of laboratory applications. The hopper sizes range from 5 L through to 60 L, which allows you to cater to different quantities requiring sampling. This is complemented by a wide range of sample bucket sizes, to take various percentages of the sample according to your requirements. Buckets are available in a range of convenient standard cut designs of 8.3% (12 buckets), 10% (10 buckets), 12.5% (8 buckets), 16.67% (6 buckets) and 25% (4 buckets).

Essa® RSD Series Rotary Sample Dividers – Residue Type

Like the RSD bucket-type unit, the Essa RSDR sample divider is designed to increase your productivity. It offers the same sample reliability, while neatly capturing the sample residue, so you save on labour time.

The RSDR offers high-quality, representative sub-samples using a falling stream and rotating buckets, which can be adjusted for different cuts and sample volumes, while the remainder of the feed passes through to a discharge system – either a mechanical conveyor belt, or a handy removable collection bucket. Clean-up is easy, with the RSDR unit neatly and cleanly capturing the unwanted portion of the sample.

Different sized buckets can be fitted to vary the percentage captured, according to your needs. If two, or up to 12, separate cuts are required, more buckets can be added. Buckets are available in a range of convenient standard cut designs of 5%, 10%, 12.5%, 15%, 20% and 25%. A range of hopper sizes is also available, from 10 L to 60 L, to cater for whatever your sample volume might be.

The simplified bucket positioning system reduces load time between samples. Plus, you are handling less buckets – less buckets to load, unload and clean. All this means you can confidently process more samples in less time. RSDR sample dividers can also be adapted for automated installations, for the ultimate in sampling efficiency.

Essa® RSDR-Series rotary sample dividers - Residue type

Essa® Riffle Splitters

Essa® Riffle Splitters are exceptionally reliable tools used for sample division in laboratories and fieldwork. They are quick and simple to use and give you reliable results. Our range of riffle splitters ensure an even and free flow of material to give you, when used correctly, accurate sub-sampling.

The Essa Riffle Splitter range includes a wide variety of standard riffle sizes, from 150 mm x 150 mm to 600 mm x 200 mm. We also offer a choice of blade spacing from 6 mm to 50 mm. Our standard range includes both enclosed units for laboratory use, and open-framed field riffle splitters. They come in a range of split options:

  • 50/50 tray collect fully enclosed lab units
  • 50/50 tray collect open tray field units
  • 75/25 tray collect two-tiered open tray field units
  • 87.5/12.5 bag collect three-tiered open units on a stand

The Essa Riffle Splitter range ensure flexibility and durability, even in demanding environments. Made from mild or stainless steel, they are cost-effective and simple to use, featuring easy cleaning and precision engineering to prevent material hang-ups.

With straightforward operation and the ability to meet various sample volumes and types, Essa Riffle Splitters are a practical, long-lasting choice for quick sample division in any setting.

Models

Compare sample dividing equipment

Sample Division Method
Rotary
Rotary
Available Hopper Capacity
1.8L
5L, 10L, 20L, 30L,40L, 50L and 60L
Available Split Ratios
2-50%
8.3%, 10%, 12.5%, 16.67% and 25%

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Downloads for sample dividing equipment

Frequently asked questions

FAQs for sample dividing equipment

In mineral processing, dividing is the process of separating a sample into smaller portions for analysis.

In a laboratory or in the field, minerals samples can be divided using different techniques depending on the application and desired level of accuracy. Some common methods include:

  • Riffle Splitters – Where a series of angled trays divide a sample into two or more parts.
  • Rotary Sample Dividers – Where a rotating drum or cone divides samples into equal portions. They are more accurate than riffle splitters and are often used for larger samples or when a high degree of precision is required.
  • Cone and Quarter Method – This is a manual method that involves pouring the sample into a cone, dividing it into quarters, and discarding one or more quarters. This method is often used for smaller samples or when a rough estimate of the sample composition is sufficient.