Air Sampling and Gas flux measurements
Chambers and devices allowing to sample air and measure gas fluxes in closed or open systems, in the lab, field or mounted to UAV. Vienna Scientific offers a range of scientific tools and instruments related to air sampling and gas / gaseous particle measurments - for lab, field and UAV use.
Air Sampling Systems - Lab to UAV
AS-100 Whole Air Sampler (Vials) for Lab & Field use. Automated sampling of gas alliquots into evacuated vials. 12 V System for Field deployment.
AS-110 UAV-based Whole Air Vial Sampler. For automatic air sampling campaigns with medium-sized UAVs. 12 vials per flight. Manual or auto trigger sampling.
AS-101 Sorbent Tube Air Sampler for Lab & Field use. Automated sampling of gases and volatiles with a large range of sorbent tubes. 12 V system for field deployment.
AS-111 UAV-based Sorbent Tube Sampler. For automatic air, pollutants (particulate matter etc) and volatile sampling campaigns with UAVs. Four Sorbent Tubes per flight. Manual or auto trigger sampling.
GF-500 Autosampler Soil Respiration. Automated, open chamber system for high-throughput soil respiration measurements in environmental chambers. Compatible with IRGA systems, Picarro etc.
Vial Evacuation
EV-101 Vial Evacuator / Conditioner. Automatically evacuates and purges sample vials with helium. Cost effective solution for preparing air sample vials/exetainers.
Custom Chamber Systems for Gas Flux & Volatile Measurements, Isotope Labeling
PTFE Flux Chamber. For experiments on gas and gaseous particles fluxes involving highly reactive substances such as (biogenic) volatiles (BVOCs) or ozone. Teflon coated bottom, air inlets and PET bags for minimizing effects on reactive substances. Fully customizable outlets and plant (canopy) insertion table.
Ecosystem Respiration Chamber. For measuring gas exchange in situ & labelling. Internal fan, gas and sensor outlets, sealing frame to soil ... various customization options available.
Mesocosm Respiration Chamber. For measuring gas exchange in pots and mesocosms under controlled conditions (growth chamber, etc.) and isotope labeling tasks. Internal fan, gas outlets, segments... various customization options. Easy to use with available IRGAs etc.
Small Respiration Chambers. For measuring gas exchange on small pots, growth tubes, rhizoboxes, soil respiration rings. Completely custom made - metal, transparent, round, square, etc.
VSI Systems for Gas Flux, Volatile and Isotope Measurements in Chambers, and Air Sampling
VSI Gas Fux & Air Sampling Systems. Gas exchange measurements (e.g. of greenhouse gases including CO2) are often made using the closed non-steady-state chamber technique, where a chamber is placed on the soil or mesocosms for a short period and the change in gas concentrations in the chamber headspace is monitored over time, either by continuous measurements (IRGA etc.) or by sampling gas aliquots from the chamber headspace into evacuated vials or sorption tubes. The resulting time series of gas concentration measurements provides an estimate of the surface-atmosphere exchange with the plot / mesocosm / potted plant on which the chamber is installed. In open dynamic systems (= steady-state flow-through systems), fresh ambient air is pumped into or extracted from a chamber and the flux is calculated from the air flow rate and the difference in concentration between the air entering and leaving the chamber after the air in the chamber headspace has reached a steady state. Air sampling ex situ for research and environmental monitoring of pollution can be done in a similar way by on-line measurements with gas analyzers or by sampling for later analysis of air samples in the laboratory. While gas flux measurement systems, especially chambers, can be made of transparent PMMA (acrylic, plexiglass) for analysis of common gas concentrations and where plants are involved, chamber and tubing materials such as PTFE (Teflon) are required for experiments with highly reactive substances. Soil respiration chambers are often made of metal or plastic and, importantly, should be designed to open and close automatically (to match the sampling intervals of the connected analysers) for long-term in situ measurements. Finally, our whole air or sorbent tube samplers allow for the collection of gas samples in glass vials or sorbent tubes - where the sample can be preserved for subsequent analysis using laboratory equipment. Samples can be collected on the command of an operator or sampling can be triggered by events or time schedules - making the air samplers highly applicable to various field or laboratory settings and even enabling the use of UAVs to sample larger parts of the troposphere and inaccessible areas.
NEW PRODUCTS: UAV-based Whole Air and Sorbent Tube Sampling
UAV systems can contribute to improved and cost-effective monitoring of greenhouse gas and air pollutant emissions, which is critical for climate change mitigation and environmental enforcement. To enable remote air sampling on mid-size UAVs, we have developed two drone-based air sampling systems that effectively sample ambient, whole air into evacuated vials (AS-110) or tubes with sorbent (AS-111).
NEW PRODUCT: Autosampler for Gas Flux Measurements in the Laboratory
We are pleased to offer the novel VSI high-throughput autosampler system to facilitate gas emission measurements (especially soil CO2 efflux) under controlled laboratory/climate chamber conditions! Eliminating the need to place and incubate samples in separate containers, increasing incubation comparability and preventing the build-up of highly concentrated headspace, while keeping samples moist in climatic chambers capable of controlling rH. Includes a built-in load cell to measure moisture levels of samples. Get more information on the GS-500 autosampler.