The S3100 Auto-sampler employs a high-precision stepper motor combined with world-class guide rails, achieving positioning accuracy close to zero deviation. Its simultaneous movement of tray and sample needle optimizes tubing connections, shortens injection cycles, and supports 120-well trays, 96-well plates, and 72-well trays. The imported side-opening sample needle made of high-purity special steel enhances strength, reduces sample adsorption, and eliminates blockage from septum debris. A highly integrated 32-bit STM32 microcontroller with SPI/I²C bus technology minimizes board size and improves reliability. Intelligent features include fully automatic power-on self-test and priming, which promptly detect circuit or mechanical faults and ensure complete system degassing for excellent repeatability. Three injection modes (full loop, partial loop with sample loss, partial loop without sample loss) are selectable, and the standard 120-well tray can be replaced with 96-well or 72-well options to meet diverse analytical needs..
| Parameter | Specification / Range |
| Injection Range | 0 – 100 µL, 500 µL, 2 mL (different quantitative loops) |
| Injection Repeatability (RSD) | < 0.3% (full loop, standard conditions) |
| < 0.5% (partial loop with sample loss, standard) | |
| < 1.0% (partial loop without sample loss, standard) | |
| Injection Linearity | R² > 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, 2 mL optional) |
| Sample Tray Capacity | 120 vials (standard); 96‑well plate / 72 vials optional |
| Power Requirements | AC 220 V ± 10% |
| Power Consumption | 30 W |
| Fuse Rating | T2A / 250 V |
| Dimensions (W × D × H) | 540 mm × 400 mm × 300 mm |
| Weight | 23 kg |
The S3100 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 kromstation chromatography data workstations, allowing complete remote control, method programming, and real‑time monitoring. With ultra‑low sample carryover, robust mechanical design, and compatibility with multiple tray formats, the S3100 ensures reliable, unattended operation for pharmaceutical, clinical, environmental, and industrial QC laboratories demanding high‑throughput and consistent performance.