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Roundfin RS-4 Cell Stainer

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✓ Certified Professional Seller Roundfin RS-4 Cell Stainer
Roundfin RS-4 Cell Stainer
Roundfin Lab, Pathology & Blood Bank

Roundfin RS-4 Cell Stainer

Flagship Cell Stainer. 90 Slides. 18 Tanks. 1000ml Volume. Ozone Purification. Histology, IVD, Clinical Diagnostics.

The Roundfin RS-4 Cell Stainer is a flagship, fully automatic cell stainer that delivers professional solutions for histology, IVD, and clinical diagnostics. It features a 90-slide capacity, 18 reagent tanks with a 1000ml volume each, a robotic arm for shaking and draining, ozone purification with exhaust filtration, a heating tank, 6 programmable modes, and free automatic and manual mode switching. Available through Medigear.uk.

Sections
Tissue Processors
Categories
Lab, Pathology & Blood Bank
Condition
New
Origin
China
Seller Type
Certified Professional Seller
CE & ISO Certified
Global Shipping
Supplier: Medigear
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The Roundfin RS-4 Cell Stainer is a flagship fully automatic cell stainer from Roundfin, delivering professional solutions for histology, IVD, and clinical diagnostics. The manufacturer describes it as the ideal choice for modern laboratory staining. As the RS-4 handles two simultaneous programs across 90 slides, it is the highest-capacity staining instrument in the Roundfin RS range. Medigear.uk supplies the RS-4 and can advise on configuration and installation.

The RS-4 has 18 reagent tanks with 1000ml volume each — the largest tank volume in the Roundfin staining range — alongside one washing tank and one drying tank. Maximum processing time per tank is 0–99 minutes and 59 seconds. The shaking tank frequency setting range is 0–9 seconds. Heating tank temperature range is 0–99°C. Operating temperature range is 5°C–40°C with relative humidity ≤95% (25°C). Working atmospheric pressure is 86kPa–106kPa.

The robotic arm performs shaking and draining to reduce dye carry-over between stations. The exhaust filtration system uses ozone purification to support eco-friendly laboratory operations. A single-cylinder open-and-close design reduces reagent volatilisation. The instrument supports six programmable modes and allows free switching between automatic and manual operation. The colour touch screen provides intuitive data operation. The instrument can run two programs simultaneously, processing up to 90 slides at one time.

Product dimensions are 1390mm×560mm×480mm (L×W×H). Weight is 120KG. Power supply is AC220V±22V, 50Hz±1Hz. Power is 400W. Certification covers CE and ISO 13485. Warranty covers 1 year and lifetime technical support. OEM customisation is available. We can provide the full specification and supply terms on request.

NHS histopathology departments, hospital diagnostic laboratories, IVD testing services, and clinical diagnostics facilities requiring the highest-capacity automatic cell stainer in the Roundfin RS range represent the primary procurement context for the Roundfin RS-4 Cell Stainer. The 90-slide simultaneous capacity across two concurrent programs, combined with 18 reagent tanks at 1000ml volume each, supports high-volume staining workflows across histology, IVD, and clinical diagnostic applications in a single flagship instrument. Medigear.uk supplies the RS-4 and can provide NHS procurement documentation.

IVD laboratories, cytology services, and clinical diagnostics facilities benefit from the RS-4's explicit manufacturer positioning for IVD and clinical diagnostics alongside histology — the broadest application positioning in the Roundfin staining range. The six programmable modes with free automatic and manual mode switching support diverse staining protocol requirements across the varied specimen types encountered in multi-application IVD and clinical laboratory environments. Medigear.uk can advise on RS-4 configuration for IVD and clinical diagnostics procurement.

High-volume private pathology laboratories, commercial histology services, and specialist cell staining services requiring maximum throughput in a single automatic stainer will find the RS-4's 90-slide capacity and dual-program simultaneous processing the most capable option in the Roundfin range. The heating tank with a 0–99°C range, ozone-purification exhaust system, and single-cylinder volatilisation control additionally support consistent, safe, and high-quality staining across the large slide volumes processed in high-throughput commercial settings. Medigear.uk can discuss RS-4 supply terms on request.

Facilities comparing the RS-4 against the RS-5 will note the RS-4's larger 1000ml tank volume (vs 500ml on RS-5), broader application scope (histology, IVD, and clinical diagnostics), and dual-program simultaneous processing. Medigear.uk can provide a full comparison across the Roundfin staining range to support procurement decisions.

Flagship Application Scope — Histology, IVD, and Clinical Diagnostics

Roundfin explicitly positions the RS-4 as a flagship instrument that delivers professional solutions across histology, IVD, and clinical diagnostics — the broadest application scope within the Roundfin staining range. For procurement officers in IVD testing services, clinical diagnostic laboratories, and cytology services, this tri-application positioning provides direct alignment with specifications beyond the histopathology-focused positioning of the RS-3 and RS-5 models. The RS-4 is the Roundfin instrument of choice when staining requirements extend beyond routine histology into IVD and clinical diagnostic cell staining.

Highest Capacity in the Roundfin RS Range — 90 Slides Simultaneously

The RS-4's dual-program simultaneous processing delivers up to 90 slides concurrently, the highest simultaneous slide capacity in the Roundfin RS staining range. For high-volume diagnostic laboratories and commercial histology services where daily slide throughput is the primary performance driver, the RS-4's 90-slide capacity offers the maximum available throughput within the Roundfin portfolio.

1000ml Reagent Tank Volume — Largest in the Roundfin Range

The RS-4's 18 reagent tanks at 1000ml each — compared to 500ml on the RS-5 and 350ml on the RS-3 — provide the largest individual tank volume in the Roundfin staining range. Larger tank volume reduces reagent replenishment frequency, supports more stable reagent concentration across high-volume slide batches, and accommodates high-immersion volume protocols that cannot run effectively in smaller-volume tanks.

Ozone Purification Exhaust Filtration for Eco-Friendly Operation

The exhaust filtration system's ozone purification technology provides active treatment of staining exhaust gases, reducing the release of solvent and reagent vapour into the laboratory environment beyond what ventilation alone provides. This eco-friendly design supports safe operation across varied laboratory ventilation environments and aligns with workplace solvent-exposure reduction objectives in healthcare and clinical settings.

Single-Cylinder Design for Reagent Volatilisation Control

The single-cylinder open-and-close design minimises reagent exposure to the open laboratory atmosphere during operation, reducing evaporation of volatile reagent components between and during staining cycles. This volatilisation control maintains reagent concentration and quality throughout the working session, extends reagent working life before replacement, and reduces the laboratory's solvent vapour burden compared to open-tray staining designs.

0–99°C Heating Tank for Temperature-Sensitive Protocols

The heating tank's 0–99°C temperature range — the widest in the Roundfin staining range — supports temperature-dependent staining steps, including enzyme-based protocols, special stains requiring elevated temperature, and pre-treatment steps for immunohistochemical applications. This wide heating range enables the RS-4 to accommodate the temperature-sensitive protocol requirements encountered across histology, IVD, and clinical diagnostic staining.

Robotic Arm for Consistent Dye Carry-Over Reduction

The robotic arm's shaking and draining operations between station transitions actively reduce dye carry-over that would otherwise contaminate reagents and degrade staining consistency. In a 90-slide, dual-program processing environment where carryover between protocols using different dye types would compromise staining quality, the robotic arm's active carryover management is an essential quality-protection mechanism.

Six Programmable Modes with Free Auto/Manual Switching

The six programmable modes provide flexible protocol configuration across the RS-4's histology, IVD, and clinical diagnostic application range, and free switching between automatic and manual operation allows the RS-4 to serve both routine high-volume automated processing and specific steps or protocols requiring closer manual control within the same instrument.

90-Slide Simultaneous Capacity

Dual-program simultaneous processing. Highest slide capacity in the Roundfin RS staining range.

18 Reagent Tanks at 1000ml Each

Largest tank volume in the Roundfin staining range. Plus 1 washing tank and 1 drying tank.

Histology, IVD, and Clinical Diagnostics

Flagship multi-application positioning. Broadest application scope in the Roundfin RS staining range.

Ozone Purification Exhaust Filtration

Active exhaust gas treatment—eco-friendly solvent vapour management for safe laboratory operation.

Heating Tank: 0–99°C

Widest heating range in the Roundfin staining range. Supports temperature-sensitive and enzyme-based protocols.

Robotic Arm Shaking and Draining

Active dye carry-over reduction between stations. Consistent staining quality across dual-program concurrent processing.

Single-Cylinder Volatilisation Control

Minimises reagent exposure to the laboratory atmosphere. Extends reagent life and reduces solvent vapour burden.

Six Programmable Modes

Flexible protocol configuration for histology, IVD, and clinical diagnostics. Colour touch screen for easy data operation.

Free Automatic and Manual Mode Switching

Operator flexibility between fully automated and manually controlled operations within the same instrument.

Maximum Processing Time: 0–99min 59s Per Tank

Extensive protocol flexibility for varied staining timings across diverse application types.

Certification: CE, ISO 13485

Medical device quality management certification supporting NHS, IVD, and clinical diagnostics procurement governance.

Warranty: 1 Year + Lifetime Technical Support

Annual warranty with ongoing technical access. OEM available. Medigear.uk can advise on all supply options.

The Roundfin RS-4 Cell Stainer is a flagship, fully automatic cell stainer suited to NHS histopathology departments, hospital diagnostic laboratories, IVD testing services, clinical diagnostic facilities, and high-volume commercial pathology services requiring the highest-capacity automatic cell-staining solution in the Roundfin range for histology, IVD, and clinical diagnostic applications. Its 90-slide simultaneous capacity across two programs, 18 reagent tanks with 1000ml volume, robotic arm dye carryover reduction, ozone-purification exhaust system, 0–99°C heating range, six programmable modes, single-cylinder volatilisation control, and 1-year warranty with lifetime technical support deliver a professional, high-throughput staining solution. Contact Medigear.uk for specifications, pricing, or expert procurement assistance.

FAQ

Frequently Asked Questions

Everything buyers need to know about sourcing medical equipment through MediGear.

The RS-4 is Roundfin's flagship cell stainer, designed for histology, IVD (in vitro diagnostics), and clinical diagnostics — the broadest application scope within Roundfin's staining range. The RS-3 is positioned as an H&E specialist, the RS-5 as a high-throughput tissue staining station, and the RS-4 as the flagship instrument for the full range of professional laboratory staining applications. For facilities requiring a single instrument capable of supporting histology, IVD, and clinical diagnostics simultaneously, the RS-4 is the appropriate choice within the Roundfin portfolio.

The RS-4 has a staining capacity of 45 pcs per load and a maximum loading capacity of 90 pcs. By running two programs simultaneously, the RS-4 can process up to 90 slides, making it the instrument with the highest simultaneous slide capacity in the Roundfin RS staining range. This dual-program simultaneous processing is particularly valuable for laboratories handling multiple staining protocols within the same working session.

The RS-4 has 18 reagent tanks with a volume of 1000ml each — the largest individual tank volume in the Roundfin staining range, compared to 500ml per tank on the RS-5 and approximately 350ml per cup on the RS-3. The larger 1000ml tank volume reduces the frequency of reagent replenishment in high-volume processing, supports more consistent reagent concentrations across large slide batches, and accommodates high-immersion-volume protocols. Maximum processing time per tank is 0–99 minutes and 59 seconds.

The RS-4's exhaust filtration system uses ozone purification to manage solvent vapours and other exhaust gases produced during the staining process, providing eco-friendly operation by treating exhaust gases before release rather than simply venting them into the laboratory environment. Ozone-based purification is effective against a range of organic solvents and staining reagent vapours commonly encountered in histology and cell staining, reducing the impact on laboratory air quality and supporting safe operation in environments with limited ventilation infrastructure.

The single-cylinder open-and-close design of the RS-4 minimises exposure of reagent tanks to the open laboratory atmosphere during operation, reducing reagent volatilisation — the evaporation and loss of volatile reagents (such as alcohols and xylene-equivalent solvents) during the staining process. Reduced volatilisation maintains reagent concentration and quality over the working session, reduces the laboratory's solvent vapour burden, and extends the effective working life of reagents before replacement is required.

The RS-4's robotic arm performs shaking and draining operations as slides move between reagent tanks, actively removing residual reagent from slides and the rack before each station transition. This active shaking and draining significantly reduces the amount of reagent carried from one tank to the next, protecting the purity of each reagent tank and maintaining consistent staining quality across the full slide batch and across concurrent programs with different dye types.

The RS-4's heating tank has a temperature range of 0–99°C, the widest heating range in the Roundfin staining range. This heating capability supports temperature-sensitive staining steps in which specific reagent temperatures improve reaction completeness and staining quality, including enzyme-based protocols, certain special stains, and immunohistochemical pre-treatment steps that require controlled, elevated temperatures.

The RS-4 supports six programmable modes, providing flexible protocol configuration for different staining applications, specimen types, and laboratory workflow requirements. The exact mode types can be configured by the laboratory, allowing the RS-4 to be set up for the specific combination of histology, IVD, and clinical diagnostic staining protocols in use at each facility. Medigear.uk can provide further details on RS-4 mode configuration and programming on request.

Yes — the RS-4 allows free switching between automatic and manual operating modes, enabling the operator to run fully automated staining cycles for routine high-volume processing and to switch to manual mode for specific steps, protocol troubleshooting, or situations requiring closer operator control. This mode flexibility distinguishes the RS-4 from instruments with only a single fixed operating mode and supports diverse laboratory workflows.

The RS-4 is the flagship instrument with the broadest application positioning (histology, IVD, clinical diagnostics), the largest tank volume (1000ml vs 500ml on RS-5 and 350ml on RS-3), and 90-slide dual-program capacity. The RS-5 has more stations (36 vs 18+2 on RS-4) and higher stated specimen throughput (400/hour). The RS-3 is a compact H&E bench-top specialist with per-user protocol management. Medigear.uk can provide a full specification comparison across the RS range to support procurement.