Olfasense CSD30 Passive Gas Sampling Device
| Brand | Olfasense |
|---|---|
| Origin | Germany |
| Model | CSD30 |
| Type | Passive Continuous Sampling Device for Odor and Volatile Gas Collection |
| Sampling Duration | 30 min (default, adjustable) |
| Sampling Principle | Diffusion-driven passive collection into Tedlar® or FlexFoil® gas sampling bags |
| Compliance | Designed for EN 13725:2022-compliant odor sampling |
Overview
The Olfasense CSD30 is a precision-engineered passive gas sampling device specifically developed for standardized odor and volatile organic compound (VOC) sampling in ambient air, emission sources, and process streams. Unlike active sampling systems requiring vacuum pumps, flow controllers, or power supplies, the CSD30 operates on passive diffusion principles—relying on natural concentration gradients to transport gaseous analytes from the sampling environment into inert, pre-evacuated gas sampling bags. This design eliminates flow rate variability, pressure drop artifacts, and pump-induced contamination, ensuring high reproducibility in olfactometric and instrumental analysis workflows. The device conforms to the procedural requirements of EN 13725:2022 for dynamic olfactometry sample collection and supports traceable, field-deployable sampling under ISO/IEC 17025-accredited laboratory protocols.
Key Features
- Passive, pump-free operation: No electricity, moving parts, or calibration drift associated with mechanical flow control.
- Standardized 30-minute sampling cycle: Pre-configured timing aligns with EN 13725:2022 recommended minimum integration periods for representative odor concentration assessment.
- Modular inlet interface: Compatible with standard 6 mm OD stainless steel or PTFE sampling probes; accommodates variable probe lengths and filtration options (e.g., particulate or moisture traps).
- Bag-compatible sealing mechanism: Ensures leak-tight connection to 1–10 L Tedlar® (polyvinyl fluoride) or FlexFoil® laminated sampling bags—certified low-permeability and low-adsorption substrates.
- Field-rugged housing: IP54-rated polycarbonate enclosure with UV-stabilized finish, suitable for outdoor deployment across temperature ranges from −10 °C to +50 °C.
- Traceable configuration: Each unit carries a unique serial number and includes a factory verification certificate documenting dimensional tolerances and bag-seal integrity test results.
Sample Compatibility & Compliance
The CSD30 is validated for use with certified odor sampling bags meeting EN 13725 Annex B specifications—including permeation rates ≤0.1 ng/cm²·h for key odorants (e.g., hydrogen sulfide, skatole, indole) at 23 °C. It supports sampling of complex matrices such as wastewater treatment off-gases, composting emissions, food processing exhausts, and urban ambient air. All components contacting sampled gas are non-reactive (electropolished stainless steel, PTFE, or fluoropolymer-lined surfaces), minimizing adsorption losses and memory effects. The device itself does not require regulatory certification but enables compliance with GLP-aligned sampling practices when used within documented chain-of-custody procedures per ISO 16000-18 and VDI 3872 guidelines.
Software & Data Management
As a hardware-only passive sampler, the CSD30 does not incorporate embedded firmware, Bluetooth, or digital logging. Sample metadata—including location (GPS-tagged via external logsheet or mobile app), start/end time, ambient temperature/humidity (recorded manually or via co-located sensor), bag lot number, and analyst ID—are maintained externally using Olfasense’s optional SampleTrak™ digital workflow module (compatible with LIMS integration). Audit trails comply with FDA 21 CFR Part 11 requirements when deployed with electronic signature-enabled platforms. Paper-based records follow ISO/IEC 17025 clause 7.5.2 for sample handling documentation.
Applications
- Olfactometric analysis: Primary sampling tool for dynamic olfactometry laboratories accredited to EN 13725.
- VOC screening: Pre-concentration support for subsequent GC-MS, GC-FID, or PTR-TOF-MS analysis where active pumping may fractionate or degrade labile compounds.
- Research-grade field studies: Enables comparative odor flux mapping across multiple sites without logistical constraints of powered equipment.
- QA/QC validation: Serves as reference method during performance testing of online odor monitors (e.g., metal oxide sensors or e-noses) per VDI 4300 Blatt 12.
<liRegulatory monitoring: Used by environmental consultancies conducting odor impact assessments under EU Industrial Emissions Directive (IED) and national permitting frameworks.
FAQ
Does the CSD30 require calibration?
No—calibration is not applicable, as the device has no flow meter, pump, or electronic sensor. Its performance is verified through physical geometry, material certification, and bag-integrity testing.
Can sampling duration be adjusted beyond 30 minutes?
Yes—while 30 minutes is the default and EN 13725-recommended interval, users may extend sampling up to 120 minutes depending on target compound volatility and ambient concentration; extended durations require validation against bag saturation limits.
Is the CSD30 compatible with canisters or sorbent tubes?
No—it is engineered exclusively for flexible gas sampling bags. Canister or tube-based methods require active sampling systems with regulated flow control.
What maintenance is required?
Annual visual inspection of seals and inlet fittings; replacement of O-rings every 24 months or after 50 deployments—documented in the user’s preventive maintenance log per ISO/IEC 17025 clause 6.4.9.
How is sample integrity ensured during transport?
Bags must remain upright, shaded, and thermally insulated (e.g., in coolers with phase-change packs); analysis should commence within 30 hours of sampling per EN 13725 section 7.4.2.
