Schmidt+Haensch S+H Automated Liquid Dispensing System
| Brand | Schmidt+Haensch (S+H) |
|---|---|
| Country of Origin | Germany |
| Manufacturer Type | Authorized Distributor |
| Import Status | Imported |
| Model | Automated Liquid Dispensing System |
| Pricing | Upon Request |
Overview
The Schmidt+Haensch S+H Automated Liquid Dispensing System is a precision-engineered laboratory instrument designed for reproducible, traceable, and operator-independent preparation of standard solutions, dilutions, and multi-component mixtures. Unlike manual pipetting or volumetric flask-based methods—prone to human error, variability in technique, and time-intensive calibration—the S+H system implements gravimetric and volumetric dispensing principles under closed-loop control. It operates on the fundamental principle of real-time mass feedback combined with calibrated peristaltic or solenoid-driven fluid delivery, enabling dynamic adjustment of dispense volume based on measured weight gain (g) or pre-set volumetric targets (mL). This architecture ensures compliance with Good Laboratory Practice (GLP) and supports audit-ready workflows in regulated environments such as pharmaceutical QC labs, food & beverage R&D, and sugar industry quality control laboratories where ISO 17025 accreditation and USP guidelines for solution preparation are routinely enforced.
Key Features
- Gravimetric and volumetric dispensing modes with dual-unit support (g and mL), allowing flexible method definition aligned with pharmacopoeial or internal SOP requirements.
- High-speed dispensing capability up to 14 mL/s at regulated pressure (0.3 bar), optimized for rapid batch preparation without compromising accuracy or cross-contamination risk.
- Triple-solvent compatibility: independent fluid paths for up to three distinct solvents, enabling sequential or simultaneous multi-solvent formulation (e.g., buffer + titrant + internal standard).
- Onboard processor with integrated LCD display and membrane keypad—no external PC required for basic operation or method recall.
- Modular mechanical design featuring rack-mounted solenoid valves, vertically adjustable balance support platform, and standardized reagent tray mounting for seamless integration with analytical balances (e.g., METTLER TOLEDO, Sartorius).
- Internal memory capacity for up to 70 pre-programmed formulations—including concentration, component ratios, sequence order, and safety interlocks—accessible via intuitive menu navigation.
Sample Compatibility & Compliance
The system accommodates aqueous, organic, and mildly corrosive liquids commonly used in analytical chemistry applications—including HCl, NaOH, ethanol, acetone, sucrose solutions, and citric acid buffers. All wetted components comply with EU Regulation (EC) No 1935/2004 for materials in contact with foodstuffs. The dispensing architecture avoids syringe-based mechanisms, eliminating piston wear and seal degradation over extended use. Calibration verification is supported through built-in weight deviation alerts and optional traceable weight standards. The system meets essential requirements of ISO/IEC 17025:2017 Clause 6.4.8 (equipment suitability) and aligns with FDA 21 CFR Part 11 expectations when paired with compliant balance and data logging software (e.g., LabX or Quantos).
Software & Data Management
The embedded firmware provides full method lifecycle management: define, edit, store, execute, and audit. Each dispensing event logs timestamp, user ID (if enabled), target mass/volume, actual delivered value, balance stability confirmation, and deviation status. Raw data export is available via USB interface in CSV format for LIMS or ELN integration. Optional PC-based configuration software enables advanced scripting (e.g., conditional branching, serial dilution cascades) and electronic signature support for 21 CFR Part 11 compliance. Audit trails retain all method modifications, including version history and operator attribution—critical for GLP audits and regulatory inspections.
Applications
- Preparation of calibration standards for UV-Vis, HPLC, and ICP-OES analysis.
- Automated dilution series for enzyme kinetics or dose-response studies.
- Batch-wise formulation of sugar syrup standards (Brix) in confectionery and beverage QA.
- Reproducible buffer preparation in biopharma downstream processing.
- QC sample spiking with internal standards prior to GC-MS or LC-MS/MS analysis.
- Support for ISO 21501-4 particle counting calibration via precise suspension dilution.
FAQ
Is the system compatible with third-party analytical balances?
Yes—provided the balance supports RS232 or USB virtual COM port communication and outputs stable mass readings with ≥0.1 mg resolution.
Can dispensing parameters be locked to prevent unauthorized changes?
Yes—user-level access control (operator, supervisor, administrator) is configurable via password protection; critical parameters require elevated privileges.
What maintenance is required for long-term reliability?
Routine cleaning of fluid paths with recommended solvents and annual verification of valve timing and gravimetric linearity using certified weights.
Does the system support integration into automated lab workflows?
Yes—via digital I/O triggers and Modbus TCP protocol for synchronization with robotic arms, autosamplers, or MES systems.
Is validation documentation available for GxP environments?
Yes—IQ/OQ protocols, test scripts, and raw validation data packages are supplied upon request for qualified installations.
