Riffle-type sample splitter RSD series

for the laboratoryportablebenchtop

Overview
Accurate analysis begins with a representative sample. Streamline laboratory workflows and improve results with Essa® sample dividing equipment, including Rotary Sample Dividers (RSD series) and Riffle Splitters. Essa® Rotary Sample Dividers (bucket type and residue type) use a controlled falling stream and rotating bucket system to produce mechanically correct, representative sub-samples. Essa® Riffle Splitters deliver fast, reliable sample division in both laboratory and field configurations.

Key benefits

• Accurate, representative sample division via controlled feed and rotary division
• Versatile technology accommodating a wide range of sample sizes and volumes
• Easy clean, low maintenance and ergonomic designs to boost laboratory throughput

Product range and variants

• Essa® RSD Bench Top Splitter: bench-top rotary sample divider with split ratios from 2–50% and a 1.8 L hopper capacity; adjustable electromagnetic vibratory feeder for precise, uniform flow; compact and ergonomic for relocation and bench use.
• Essa® RSD Series Rotary Sample Dividers – Bucket Type: rotary bucket units providing mechanically correct sampling for larger samples; hopper sizes from 5 L to 60 L; bucket cut designs available as standard: 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 (RSDR): similar rotary dividing principle with residue capture for reduced cleanup; remainder of feed passes to discharge (conveyor or removable collection bucket); bucket cut options available (5%, 10%, 12.5%, 15%, 20%, 25%); hopper sizes from 10 L to 60 L; simplified bucket positioning for quicker changeovers.
• Essa® Riffle Splitters: quick, simple and reliable riffle splitters in laboratory (enclosed) and field (open-frame) configurations; standard riffle sizes from 150 mm x 150 mm to 600 mm x 200 mm and blade spacing from 6 mm to 50 mm; split options include 50/50 (tray collect, enclosed or open), 75/25 (two-tiered open tray) and 87.5/12.5 (three-tiered, bag collect on stand).

Materials, construction and usability

• Stainless steel and aluminium construction options to resist contamination and corrosion
• Stainless steel components for long life and easy cleaning
• Electromagnetic vibratory feeders for consistent, controllable feed rate
• Available as mobile, bench-top, enclosed lab units and open field options

Applications

• Geochemical laboratories
• Industrial laboratories and on-site field sampling
• Any workflow requiring representative sub-sampling to internationally recognised sampling protocols

Technical specifications

• Sample division method: Rotary (rotating bucket circle beneath falling stream) or Riffle (angled tray/blade split)
• Available hopper capacities (RSD bucket/residue types): 5 L, 10 L, 20 L, 30 L, 40 L, 50 L, 60 L
• Bench top hopper capacity (RSD Bench Top Splitter): 1.8 L
• Available split ratios (bench top): 2–50%
• Standard bucket cut designs (bucket type): 8.3%, 10%, 12.5%, 16.67%, 25%
• Bucket cut options (residue type RSDR): 5%, 10%, 12.5%, 15%, 20%, 25%
• Riffle splitter sizes: from 150 mm x 150 mm up to 600 mm x 200 mm
• Riffle blade spacing options: 6 mm to 50 mm
• Construction materials: stainless steel and aluminium options to minimise contamination
• Feed control: adjustable electromagnetic vibratory feeder (feed speed / split ratio adjustable)
• Discharge options (RSDR): mechanical conveyor belt or removable collection bucket for residue