The S3210 Auto-sampler features a simultaneous movement of tray and sample needle that shortens injection cycles and is compatible with 120‑well trays. An imported high‑precision side‑opening sample needle made of high‑purity special steel enhances strength, reduces sample adsorption, and eliminates blockage from septum debris. A high‑precision stepper motor combined with world‑class guide rails achieves positioning accuracy close to “zero deviation”. The highly integrated 32‑bit STM32 microcontroller with SPI/I²C bus minimizes board size and improves reliability. Intelligent functions include fully automatic power‑on self‑test and priming, which promptly detect circuit or mechanical faults and ensure complete system degassing for excellent repeatability, plus a dual‑probe leakage alarm for stable and accurate leak detection. Three injection modes (full loop, partial loop with sample loss, partial loop without sample loss) are selectable, and the blank position for non‑destructive injection (116–120) is optional, meeting diverse analytical requirements. A software‑controlled lighting function adds personalized operation, and motor speed / step‑interval adjustments can further shorten the sampling cycle.
| Parameter | Specification / Range |
| Injection Range | 0 – 100 µL |
| Injection Repeatability (RSD) | < 0.2% (full loop, standard conditions) |
| < 0.5% (partial loop with sample loss, standard) | |
| < 1.0% (partial loop without sample loss, standard) | |
| Injection Linearity | r > 0.999 |
| Sample Residue | < 0.01% |
| Maximum Pressure | 45 MPa |
| Communication | UDP (Ethernet) |
| Injection Trigger | Digital mode, analog mode |
| Syringe Volume (default) | 500 µL |
| Quantitative Loop (default) | 100 µL (10 µL, 20 µL optional) |
| Sample Tray Capacity | 120 vials (standard); blank positions 116–120 |
| Power Requirements | AC 220 V ± 10% |
| Power Consumption | 30 W |
| Fuse Rating | T2A / 250 V |
| Dimensions (W × D × H) | 440 mm × 380 mm × 180 mm |
| Weight | 13 kg |
The S3210 Auto-sampler provides fully automated, high-precision sample introduction for high-performance liquid chromatography (HPLC) systems. It supports three injection modes to accommodate different analytical requirements, delivering excellent injection repeatability and linearity even with trace sample volumes. The UDP-based network communication enables seamless integration with W5100/Kromstation chromatography data workstations, allowing complete remote control, method programming, and real-time monitoring. In addition to routine sampling, the S3210 offers built-in derivatization functionality, enabling automated sample derivatization, mixing, and even automatic preparation of standard calibration curves. With ultra-low sample carryover, robust mechanical design, and a compact footprint, the S3210 ensures reliable, unattended operation for pharmaceutical, clinical, environmental, and industrial QC laboratories demanding high-throughput and consistent performance.