Roundfin RS-4 Fully Automated Slide Stainer
1. Color touch screen with 6 programmable staining modes
2. Stains 45pcs slides per batch; 2 programs (Max 90pcs slides) simultaneously
3. 18 reagent tanks (1000ml each) + 1 wash tank + 1 drying tank; heating tank: 0-99°C
4. Robotic arm with shaking (0-9 seconds) & draining to reduce dye carry-over
5. Exhaust filtration with ozone purification; single-cylinder open/close design
6. Auto/manual free switch; CE; ISO 13485 certified; 1 year warranty and lifetime technical support
Product Overview
The Roundfin RS-4 is a fully automated linear slide stainer designed for mid-volume histology and pathology laboratories. Featuring a color touch screen with 6 programmable staining modes, 18 reagent tanks (1000ml each) plus 1 wash tank and 1 drying tank, and a robotic arm with automated shaking and draining to minimize dye carry-over, the RS-4 delivers consistent, high-quality H&E and special staining in a space-efficient linear format.
The RS-4 processes 45pcs slides per batch and supports 2 programs running simultaneously for up to Max 90pcs slides. The heating tank is adjustable from 0-99°C, with processing time per tank (0-99min59s) and shaking frequency (0-9 seconds). A single-cylinder open/close design reduces reagent volatilization, while the exhaust filtration system with ozone purification maintains lab safety. Free switching between automatic and manual modes. CE; ISO 13485 certified with 1 year warranty and lifetime technical support.
Figure 1 -- Roundfin RS-4 Fully Automated Slide Stainer with color touch screen and 18+1+1 station design
Key Specifications
Capacity: 45pcs slides/batch, up to Max 90pcs | Stations: 18 Reagent + 1 Wash + 1 Dry | Heating: 0-99°C | Cert: CE; ISO 13485
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | RS-4 |
| Capacity / Batch | 45pcs |
| Max Loading (2 Programs) | Max 90pcs |
| Reagent Tanks | 18 x 1000ml |
| Wash Tank | 1 |
| Drying Tank | 1 |
| Heating Tank Temp | 0-99°C |
| Processing Time | 0-99min59s / tank |
| Shaking | 0-9 seconds |
| Robotic Arm | Shaking & draining anti-carry-over |
| Exhaust Filtration | With ozone purification |
| Working Env | 5°C~40°C, hum ≤95% (25°C) |
| Dimensions (L x W x H) | L*W*H=1390mm*560mm*480mm |
| Weight | 120KG |
| Power | 400W / AC220V±22V, 50Hz±1Hz |
| Package | 1550mm*650mm*750mm, 130KGS |
| Certification | CE; ISO 13485 |
| Warranty | 1 year warranty and lifetime technical support |
Key Features
- 6 Programmable Staining Modes -- Color touch screen interface with 6 modes. 2 programs can run simultaneously for up to Max 90pcs slides total.
- Robotic Arm with Anti-Carry-Over -- Automated shaking (0-9 seconds) and draining between stations reduces dye carry-over for consistent staining.
- Heating & Washing Tanks -- Dedicated heating tank (0-99°C) and wash tank for thorough rinsing between reagents.
- Exhaust Filtration with Ozone Purification -- Removes harmful vapors and purifies exhaust air for lab safety.
- Single-Cylinder Open/Close Design -- Reduces reagent volatilization when not in use, conserving reagents.
- Free Auto/Manual Switching -- Seamlessly switch between automatic and manual operation modes.
- Mid-Range Linear Design -- 18 reagent tanks (1000ml) in linear configuration for easy access and maintenance.
RS-3 vs RS-4 vs RS-5 Comparison
| Feature | RS-3 (Compact) | RS-4 (Mid-Range) | RS-5 (High-Throughput) |
|---|---|---|---|
| Footprint | 940x295x340mm | L*W*H=1390mm*560mm*480mm | 1050x615x590mm |
| Capacity | 24 slides | 45pcs (max Max 90pcs) | 400 slides/hour |
| Reagent Tanks | 13 x 350ml | 18 x 1000ml | 26 x 500ml |
| Heating | - | 0-99°C | 4 heated cylinders |
| Best For | Small labs, sectioning area | Mid-volume hospital labs | High-volume central labs |
FAQ
How many slides can the RS-4 process?
45pcs slides per batch, up to Max 90pcs slides when running 2 programs simultaneously with different staining protocols.
Where does the RS-4 sit between RS-3 and RS-5?
RS-3 is compact (24 slides, 940mm) for small labs. RS-4 is mid-range (45pcs slides, L*W*H=1390mm*560mm*480mm) with heating tank and ozone exhaust filtration. RS-5 is high-throughput (400 slides/hour, 36 stations) for large central labs.
How does the exhaust filtration work?
The RS-4 features exhaust filtration with ozone purification that captures and neutralizes formaldehyde, xylene, and alcohol vapors. The single-cylinder open/close design further reduces reagent volatilization.
Can it operate in both automatic and manual modes?
Yes. The RS-4 supports free switching between automatic and manual modes -- use auto for routine throughput and manual for protocol development or special stains.
Need a Mid-Range Automatic Slide Stainer?
Roundfin RS-4: 45pcs slides/batch (max Max 90pcs), 18 reagent tanks (1000ml), heating tank (0-99°C), robotic arm anti-carry-over, exhaust filtration with ozone. CE; ISO 13485 certified, 1 year warranty and lifetime technical support.
Request a quotation: Contact our team -- reply within 12 hours.








