Olfasense LiGaVa 4.0 Liquid Sample Vaporization System

Overview

The Olfasense LiGaVa 4.0 is a precision-engineered liquid vaporization system designed for controlled, reproducible, and quantitatively traceable transfer of liquid odorants or volatile analytes into the gas phase. Operating on the principle of dynamic headspace vaporization, the system enables accurate delivery of known mass fluxes of volatile compounds by precisely regulating four independent physical parameters: vaporization temperature, liquid sample volume, carrier gas flow rate (volumetric, standardized to STP), and exposure time. This deterministic approach ensures stoichiometric consistency across repeated injections—critical for olfactometry, sensory analysis, gas chromatography–olfactometry (GC-O), reference standard generation, and instrumental calibration in regulated environments. Unlike passive or thermal-desorption-based systems, the LiGaVa 4.0 maintains continuous, laminar vapor-phase output without thermal degradation, making it suitable for thermally labile odorants and low-volatility compounds requiring gentle volatilization.

Key Features

• Four-parameter independent control: programmable liquid volume (µL range), carrier gas flow (1–500 mL/min, mass-flow controlled), vaporization chamber temperature (20–200 °C, ±0.1 °C stability), and vaporization duration (0.1–300 s)
• Integrated syringe pump with PTFE-coated stainless-steel plunger and glass syringe barrel for chemical compatibility and minimal adsorption
• Heated, inert vapor pathway (electropolished 316L SS + SilcoNert®-treated surfaces) minimizing surface interaction and memory effects
• Real-time monitoring of actual flow, temperature, and injection event timing via embedded sensor suite and digital I/O interface
• Modular design supporting integration with human sniffing ports (ISO 13299 compliant), GC inlets, PTR-MS, SIFT-MS, or electronic nose systems
• CE-marked, RoHS-compliant, and manufactured under ISO 9001-certified quality management system in Germany

Sample Compatibility & Compliance

The LiGaVa 4.0 accommodates a broad spectrum of liquid matrices—including aqueous solutions, ethanol-diluted standards, vegetable oils, and viscous flavor emulsions—provided viscosity remains below 500 mPa·s at operating temperature. It supports direct coupling to EN 13725:2022-compliant dynamic olfactometry systems and meets method requirements outlined in ASTM E679 (standard practice for determining odor thresholds by scaling methods) and ISO 8586 (sensory analysis—guidelines for selection, training and monitoring of assessors). All firmware and hardware configurations are documented per GLP principles; audit trails for parameter settings, timestamps, and operator IDs are retained for up to 12 months—supporting 21 CFR Part 11 readiness when paired with validated LIMS or acquisition software.

Software & Data Management

The system operates via Olfasense’s LiGaVa Control Suite (v4.x), a Windows-based application offering intuitive method programming, real-time visualization of vaporization profiles, and export of timestamped metadata (CSV/Excel) including injected mass (calculated from density, volume, and purity), carrier gas total volume, and thermal history. The software supports automated sequence execution for multi-level dilution series and cross-system synchronization with third-party data acquisition platforms via TCP/IP or TTL triggers. All configuration files are digitally signed and version-controlled; firmware updates undergo cryptographic verification prior to installation. Raw sensor logs and method archives are stored locally with optional network backup to secure NAS endpoints.

Applications

• Preparation of certified odor reference standards for laboratory accreditation (e.g., ISO/IEC 17025)
• Generation of precise odorant pulses in human sensory testing (detection threshold, recognition threshold, intensity scaling)
• On-line introduction of liquid standards into GC-O, GC-MS, or GC×GC systems without derivatization
• Calibration of proton-transfer-reaction mass spectrometers (PTR-MS) and selected-ion flow-tube mass spectrometers (SIFT-MS)
• Method development for emission testing of consumer products (e.g., detergents, cosmetics, cleaning agents) per VDA 278 or DIN SPEC 91406
• Research on structure–odor relationships requiring quantitative vapor-phase concentration control

FAQ

Is the LiGaVa 4.0 compatible with non-Olfasense olfactometers?
Yes—it delivers standardized gas-phase output meeting ISO 13299 interface specifications and can be integrated with any olfactometer accepting 1/4″ Swagelok® inlet connections and 0–10 V analog trigger signals.
Can it handle high-boiling-point compounds such as vanillin or coumarin?
Yes—its extended temperature range (up to 200 °C) and inert heated pathway enable stable vaporization of semi-volatile compounds with boiling points up to ~350 °C, provided appropriate carrier gas flow and dwell time are selected.
Does the system support Good Manufacturing Practice (GMP) documentation?
While the LiGaVa 4.0 itself is not GMP-certified as a standalone unit, its audit trail functionality, electronic signature support, and configurable user access levels meet foundational requirements for GMP-aligned laboratories when deployed within a validated analytical workflow.
What maintenance intervals are recommended?
Routine verification of syringe seal integrity and flow calibration is advised every 6 months; full system performance qualification (SPQ) using certified reference standards is recommended annually or after major component replacement.