St. Croix Sensory remains open and committed to the success of your project needs throughout the COVID-19 pandemic.
For the safety of our clients and staff, we have outlined our “Best Practice Recommendations” for the use and care of the Nasal Ranger Field Olfactometer, Odor Sensitivity Test Kit and odor sampling equipment.
AC’SCENT Flux Chamber is a surface emission isolation hood designed for solid or liquid surface sample collection. Our Flux Hood follows US-EPA recommended design parameters for isolated surface emission collection.
Set the AC’SCENT Flux Chamber directly on a solid surface or on a liquid surface with the included float. Use a clean odor-free sweep gas, either zero-air, high purity nitrogen or nitrogen with a helium tracer component. You follow your project protocol for sweep gas and sampling rates.
Overall Hood Diameter: 0.14 m (16″)
Surface Area under Hood: 0.13 m2
Four Ports: 1) sweep gas/air;
2) sample line;
3) excess gas/air vent; and
4) optional thermocouple probe.
Included Rope: 50′ – 3/8″ Nylon Braided Rope
Included Flotation: Standard 16″ Tube
Sweep gas supply and regulator NOT included.
Q: Does the AC’SCENT Flux Hood comply with EPA sampling methods?
Yes, see EPA document PB86-223161, “Measurement of Gaseous Emission Rates from Land Surfaces Using an Emission Isolation Flux Chamber.”
Q: When I use the Flux Hood what flux gas/air do I use?
The protocol for your project may dictate zero-air or high-purity nitrogen (HPN) with or without a helium (He) component.
Q: What is a typical sweep gas (air) rate?
25-liters per minute per square meter is a typical sweep gas rate, which is 3.5-LPM for the 0.13-m2 under the AC’SCENT Flux Hood.
Q: What is the typical sample collection rate?
The Sample collection rate depends on your project protocol; a typical sample collection rate is 1 to 2 LPM.
St. Croix Sensory is proud to participate in the upcoming AIR TALKS 2020
The Water Environment Federation (WEF) has completed an update to their popular Manual of Practice, “Odor Emissions and Control for Collection Systems and Water Resource Recovery Facilities”, also known as MOP-25.
The character of the odor, often referred to as odor quality, can be evaluated with standard protocols that greatly reduce the subjectivity of assessments.