ROUNDFIN RD-500

General pathology laboratories are the primary setting for the ROUNDFIN RD-500 Carousel Tissue Processor. In hospital pathology departments and medical college labs, consistent reagent cycling underpins the quality of histological slide preparation, directly affecting diagnostic accuracy. The 12-step programmable sequence and 30-day delayed start function allow managers to align tissue processing with downstream histotechnologist workflows. Procurement teams can access the full RD-500 specification package through Medigear.uk.

High-volume research institutions and animal or plant research units represent a second key deployment environment for the RD-500. The dual-basket system — supporting 1.3 L per basket in standard configuration and 2.3 L for larger specimens — accommodates varied sample sizes without changeover. Ten built-in program slots enable management of multiple tissue protocols across different species or fixation methods. The obstacle detection sensor and dual limiter system provide process protection aligned with accredited laboratory quality management standards.

Biomedical and food testing departments form a third operational setting in which the RD-500 delivers consistent value. Reagent cup material options of aluminium or glass give teams the flexibility to select chemically resistant configurations for aggressive solvents. The 55-85°C wax cup temperature range accommodates a broad spectrum of paraffin grades. Laboratories running multiple shifts benefit from the memory-protection power recovery feature, which resumes processing from the last confirmed position after any interruption.

Institutional distributors requiring bulk supply, custom configuration, or AMC support can engage the Medigear.uk procurement team directly. The RD-500's footprint of 660 by 600 by 720 mm and a net weight of 65 kg allow practical integration into existing floor plans without structural modification. CE certification and compatibility with international standard voltages make it a viable option for distributors supplying facilities across varied regulatory environments.

12-Step Automated Reagent Cycling for Consistent Histological Output

The RD-500 eliminates manual transfer between reagent stations by automating all 12 processing steps within a single closed cycle. This removes operator variability from the dehydration, transparency, and paraffin embedding sequence, producing more consistent results across specimen batches. Pathology departments with high daily slide volumes benefit directly from reduced manual handling steps. Laboratory managers can rely on the 10 built-in program slots to maintain separate, validated protocols for different tissue types without reprogramming between runs.

Dual-Basket Configuration for Scalable Throughput

Operating with either one or two baskets, the RD-500 scales reagent processing capacity from 1.3 L to 2.3 L per basket, depending on specimen volume. This flexibility avoids the need for separate instrument configurations for small and large sample loads. Research institutions that process both biopsy-scale and whole-organ specimens can use the same platform across specimen types. Medigear.uk can advise on basket sizing and configuration options most suited to a laboratory's typical case mix.

CE-Certified Build Supporting Institutional Procurement Requirements

CE certification confirms that the RD-500 meets European safety and performance standards applicable to laboratory instrumentation. This is a procurement-essential credential for hospital pathology departments, NHS trusts, and accredited research facilities evaluating new capital equipment. The certification documentation is available through Medigear.uk for submission to institutional procurement and governance committees. Distributors supplying to regulated laboratory environments benefit from the CE mark as a baseline compliance signal for end-user approval processes.

30-Day Delayed Start for Out-of-Hours Laboratory Operations

The delayed start function allows laboratory teams to pre-configure a processing run up to 30 days in advance, enabling tissue processing to complete during unstaffed periods such as overnight or across weekends. This feature supports lean staffing models without sacrificing throughput. Combined with the power-off memory protection system — which resumes from the last processing position after any interruption — the RD-500 maintains process continuity even in laboratories with unpredictable mains supply. Histotechnologists can arrive at completed, ready-to-section specimen blocks without having been present during the processing cycle.

Obstacle Detection and Dual-Limiter Safety Architecture

The obstacle detection sensor stops carousel rotation the moment a foreign object or accumulated paraffin impedes the mechanism, thereby preventing reagent spillage and damage to carousel components. A dual-limiter system provides independent software and mechanical stop functions, each capable of halting the instrument independently in the event of the other failing. This architecture reduces unplanned downtime caused by mechanical faults and protects specimen integrity during long overnight runs. Hospital procurement teams will recognise this as a meaningful risk-mitigation feature for high-value or irreplaceable tissue samples.

Compact Benchtop Footprint Supporting Laboratory Floor-Plan Flexibility

At 660 by 600 mm, the RD-500 has a footprint comparable to that of a standard laboratory centrifuge, making it straightforward to integrate into existing bench layouts without reconfiguring the room. Its 720 mm height fits beneath most overhead wall-mounted storage systems in pathology laboratories. A net weight of 65 kg means the unit can be positioned by laboratory staff using standard equipment, such as moving trolleys. Medigear.uk can provide CAD drawings of the instrument dimensions on request to support laboratory refurbishment planning.

10 Built-In Program Slots for Multi-Protocol Laboratory Environments

The RD-500 stores up to 10 distinct processing programs simultaneously, allowing laboratories that process multiple tissue types — such as human biopsy, plant samples, and animal research specimens — to switch protocols without reprogramming. Each program independently controls step count, step duration, and wax temperature, enabling validated protocols to be preserved and recalled across shifts or operators. This is particularly valuable for research institutions where different investigators require separate processing parameters for concurrent studies.

Dual Voltage Compatibility for Global Distribution and OEM Supply

The RD-500 is available in both AC 220 V / 50 Hz and AC 110 V / 60 Hz configurations, making it a practical procurement option for distributors supplying laboratory facilities across different electrical infrastructure standards. OEM buyers and bulk purchasers can specify the voltage variant at the time of order through the Medigear.uk procurement team. This flexibility reduces logistical complexity for distributors managing multi-territory supply agreements and removes the need for end users to source local power-conditioning equipment.

AMC Support and Bulk Supply Options for Long-Term Institutional Partnerships

Medigear.uk offers Annual Maintenance Contract support for the RD-500, covering scheduled preventive maintenance, priority breakdown response, and access to genuine parts. This is a procurement advantage for hospital departments and research institutions that require guaranteed instrument uptime as part of their laboratory operational framework. Bulk-supply pricing and OEM customisation arrangements are available to distributors and institutional buyers with multi-unit requirements. Long-term supply relationships with Medigear.uk provide access to technical updates, firmware changes, and reagent cup replacement programmes as part of ongoing after-sales engagement.

Reagent Cup Count: 12 Cups with 9 + 3 Paraffin Configuration

The RD-500 carousel holds 12 reagent cups in total, with the standard configuration comprising 9 cups for tissue reagents and 3 for paraffin embedding media. This configuration supports a full chemical processing sequence without requiring mid-cycle manual intervention. Laboratories using different reagent sequences can adjust cup allocation to suit specific dehydration and clearing protocols.

Processing Capacity: 1.3 L Standard or 2.3 L Large-Volume per Basket

Each basket accommodates up to 1.3 L of tissue specimen in standard mode, with a larger-volume option supporting 2.3 L per basket. With two baskets installed, the total per-cycle processing capacity reaches 2.6 L in the standard configuration or 4.6 L in the large-volume setting. This range covers specimen loads from routine surgical biopsy volumes through to larger anatomical specimens typical of research or veterinary pathology applications.

Tissue Processing Steps: 12 Discrete Steps per Cycle

The instrument executes exactly 12 programmed tissue processing steps per run, moving specimens through dehydration agents, clearing agents, and paraffin in a defined, automated sequence. Each step duration is independently configurable, with a minimum time interval of one minute. The 12-step architecture accommodates standard histological processing sequences used in both clinical and research pathology.

Minimum Time Interval: 1 Minute per Processing Step

The minimum configurable duration for each processing step is one minute, giving laboratory operators precise control over reagent exposure times. For time-sensitive or delicate tissue types that require shorter reagent contact, this resolution enables processing programmes to be tightly optimised. Steps with longer required durations are set freely up to the programme's total duration limit.

Program Duration Range: 0 to 10 Hours Across 10 Program Slots

Each of the 10 built-in programs can be set to run for any duration between 0 and 10 hours, giving laboratories the flexibility to define both rapid and extended processing cycles within the same instrument. Overnight programmes benefit from the delayed start function, allowing teams to set completion times that align with shift start. The 10 independent program slots ensure that validated protocols are stored and recalled without risk of overwriting.

Operating Modes: Manual and Automatic with 30-Day Delayed Start

The RD-500 supports both manual and automatic operating modes, which can be selected according to the laboratory's workflow requirements. In automatic mode, the delayed start function allows operators to schedule a run up to 30 days in advance, supporting out-of-hours and unattended processing. Manual mode provides direct, step-by-step control for protocol development or troubleshooting.

Wax Cup Temperature Range: 55°C to 85°C

The paraffin wax cup temperature is adjustable between 55 and 85°C, covering the full range of paraffin grades used in standard histological embedding. Lower-melting-point waxes used for delicate or heat-sensitive tissues are accommodated alongside harder paraffins suited to routine surgical biopsy processing. Temperature accuracy at the wax cup is important for preventing premature solidification during embedding steps.

Reagent Cup Material: Aluminium Standard with Optional Glass

Reagent cups are manufactured from aluminium as standard, providing durable chemical resistance to most histological solvents, including xylene, ethanol, and clearing agents. Optional glass inserts are available for laboratories that use highly aggressive organic solvents, where aluminium may show surface degradation over time. Medigear.uk can advise on the availability of glass inserts and their compatibility with the RD-500 cup holder geometry.

Basket Configuration: 1 or 2 Baskets with Built-In Rotation

The RD-500 basket system supports either a single- or dual-basket installation, with automatic rotation every 5 minutes to ensure thorough, even reagent mixing across all specimen surfaces. Continuous basket agitation reduces the risk of reagent concentration gradients forming around tissue, which can produce uneven dehydration or incomplete clearing. Basket rotation is suspended automatically when the obstacle detection sensor is triggered.

Power Supply: AC 220 V / 50 Hz or AC 110 V / 60 Hz at 300 W

The standard instrument operates at AC 220 V, 50 Hz, with a rated power consumption of 300 W. An alternative configuration for AC 110 V, 60 Hz is available for facilities with different mains supply standards. Both configurations operate identically in terms of processing capability and programme functionality, with the voltage variant specified at the point of order through Medigear.uk.

Dual-Limiter Safety System: Internal Software and External Mechanical

The dual-limiter system provides two independent mechanisms to halt carousel operation in the event of a fault. The internal software limiter monitors the control programme and halts the motor drive if a threshold is exceeded. The external mechanical limiter operates independently of the software layer, providing a physical backstop against over-travel or uncontrolled movement. This redundant safety architecture is particularly relevant for unattended processing runs.

Obstacle Detection Sensor: Automatic Stop on Foreign Object Detection

The obstacle-detection sensor continuously monitors the carousel mechanism's rotation path during operation. When a foreign object — such as a misplaced specimen cassette, paraffin overflow, or mechanical obstruction — is detected, the sensor triggers an immediate motor stop. This prevents damage to the carousel drive, reagent cups, and any specimens in process. The sensor operates passively throughout the cycle without requiring operator input.

Power-Off Memory Protection: Resume from Last Position After Interruption

Following any unplanned power interruption, the RD-500 resumes processing from the last confirmed memory position once the power is restored. This means specimens in process at the time of a power failure are not automatically advanced to an incorrect step or abandoned mid-cycle. The memory protection feature is particularly important for laboratories running overnight programmes in facilities where mains supply reliability may be variable.

Instrument Dimensions: 660 × 600 × 720 mm at 65 kg

The RD-500 measures 660 mm in length, 600 mm in width, and 720 mm in height, with a net weight of 65 kg. This compact form factor is compatible with standard pathology laboratory benching systems and does not require floor reinforcement or specialist mounting. Packing dimensions for freight should be confirmed with the Medigear.uk procurement team before arranging logistics.

Automatic 5-Second Drain Interval During Cylinder Changing

When the carousel advances automatically between reagent cups during a processing cycle, a 5-second drain interval is applied to allow residual reagent to drain from the basket before the next cup is engaged. This prevents unintended cross-contamination between consecutive reagent stages, which could compromise the efficiency of dehydration or clearing. The drain interval operates automatically as part of the cylinder-changing sequence without requiring operator intervention.

Switchable Between Manual and Automatic Modes Mid-Operation

Operators can switch the RD-500 between manual and automatic operating modes without interrupting an active processing cycle, providing flexibility for real-time protocol adjustments during development or troubleshooting phases. This switchability is useful in research laboratory settings where processing parameters may need to be modified based on interim specimen assessments. The control interface is designed for intuitive navigation by trained laboratory technicians familiar with standard tissue processor platforms.

The ROUNDFIN RD-500 Carousel Tissue Processor delivers programmable, automated tissue dehydration, transparency, and paraffin embedding across general pathology laboratories, medical research institutions, biomedical testing departments, and high-volume histology units. Its 12-step processing sequence, dual-basket configuration, 10 built-in program slots, CE-certified electrical safety, and aluminium or glass reagent cup options make it a dependable procurement choice for hospital pathology departments operating at any throughput level. Institutional distributors benefit from dual-voltage availability and OEM customisation options. At the same time, individual laboratory buyers receive comprehensive AMC support, complete technical documentation, and direct procurement guidance from the Medigear.uk team. Contact Medigear.uk for specifications, procurement assistance, or expert consultation.