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Representative sampling systems

Product Category: Rifflers

Industry: Mining and materials, Particle and surface science, Pharmaceutical, Personal Care and Natural Products

Supplier: Quantachrome


Rotary Micro Riffler™

The Rotary Micro Riffler easily and automatically divides larger samples into eight smaller representative samples for analysis.

By repetitive division of the collected smaller representative samples, the desired final sample size may be obtained.

The Rotary Micro Riffler has two basic components: A circular vibrating bowl which is amplitude-variable and controls the delivery rate of the initial sample powder. A sample collector which is a rotating disc holding eight test tubes. Size of the test tubes may be varied to accommodate the initial sample size.

To accommodate a variety of materials the Rotary Micro Riffler has two sets of controls; one for the delivery rate and the second for the rotation rate of the collectors. By varying these two controls, accurate divisions of any powder may be achieved regardless of particle size or density.

To divide a sample, up to 120 cm3 of sample is loaded into the Rotary Micro Riffler's vibrator bowl. If more than 120 cm3 must be divided, then additional fillings after each complete delivery may be made until the total initial sample has been divided. The vibrator bowl will automatically feed the collector to provide eight representative powder samples in the test tubes rotating in front of the vibrator. After all the material has been delivered into the test tubes, further reduction in sample size may be accomplished by emptying the contents of one or more of the test tubes into the vibrator and repeating the procedure until the desired sample size is achieved.

Sieving Riffler™ - Rotary Sample Splitter

The Sieving Riffler is designed to handle larger quantities of powder than the Rotary Micro Riffler. Additionally, particles larger than a particular size and/or foreign bodies can be excluded from the riffling process by attaching a sieve to the top of the hopper.

The Sieving Riffler has 3 basic components:
A cylindrical vibrating hopper, a rotating sample collector table and a replaceable sieve. The collector is divided into eight (8) removable stainless steel compartments.

To divide a sample, the hopper is filled or partly filled with sample. The vibrator amplitude is set and the powder is automatically fed into the rotating collectors. After all the material has been delivered, further reduction in sample size may be achieved by emptying the contents of one or more collector back into the hopper for additional splitting.

The durable stainless collectors are appropriate for both laboratory and industrial environments.


Riffling of Powders

Analysis and testing of powders for chemical assay and physical measurements, such as particle size, density and surface area, often requires a large sample quantity to be split into smaller amounts by, for example, spin riffling or rotary riffling. Therefore, it is necessary that the sub-sample shall be a representative sample of the initial lot or batch for reproducible and valid data.

The Sieving Riffler and Rotary Micro Riffler are designed to accurately and reproducibly prepare representative powder sub-samples using the statistically superior method of spin riffling.


Rotary Micro Riffler Specifications
Height: 13"(33 cm)
Width: 7.75"(20 cm)
Depth: 6.25"(16 cm)
Weight: 16 lbs. (7.3 kg)
Electrical:110-120V or 220V, 50/60 Hz
Max. Capacity:120 cm3
Collector Tube Volume: 4 cmand 15 cm3
Vibrator Bowl: aluminum (nickel-plated available)



Sieving Riffler Specifications

Width: 20" (51cm)
Depth: 20" (51cm)
Weight: 63 lbs. (29 kg)  
Electrical: 110-120V or 220V, 50/60 Hz
Maximum Capacity: 2500 cm3

Scientific Solutions

Scientific Solutions have been providing carefully selected laboratory and analytical equipment to Australian Industries such as Environmental, Pharmaceutical, Food and Beverage and Research markets of the Science Industry for over a decade.

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