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September 2021 |
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A TECH MINUTE What is ORP? Oxidation-Reduction Potential (ORP) is a qualitative measurement that determines how oxidizing or reducing an environment is. When it comes to environmental monitoring or remediation, ORP determines the health of an aqueous environment and its ability to break down contamination and biological matter.
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ORP is measured with water quality instrumentation and sensors using low voltage between a platinum and reference electrode. ORP/Redox is expressed in millivolt (mV) units, in which Oxidizing environments are indicated by a positive reading and Reducingenvironments display negative readings. ORP is generally significant in water which contains a relatively high concentration of a redox-active species, e.g., the salts of many metals (Fe2+, Fe3+) and strong oxidizing (chlorine) and reducing (sulfite ion) agents. Thus, ORP may be utilized to track the metallic pollution in groundwater or surface water. |
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| Biochemical Reactions and Corresponding ORP Values | ||||
Biochemical Reaction |
ORP, mV |
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Nitrification |
+100 to +350 |
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| Source: ysi.com/parameters/orp-redox | ||||
| To learn more about instrumentation for measuring ORP or other water quality parameters, reference these industry leading brands sold and supported by Geotech. | ||||
Aqualabo DIGISENS Digital Sensors – globally recognized single parameter sensors designed for dedicated monitoring and process control. |
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In-Situ – single and multiparameter water quality instruments designed for portable and dedicated applications. |
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Seametrics Smart Sensors – single parameter water quality sensors with internal data storage commonly used in unattended monitoring and process control applications. |
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YSI Pro-Series – versatile handhelds offering single and multiparameter water quality measurements in the field or lab.
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Geotech SitePro – water quality data logger and cellular telemetry system providing access to site data and alerts anytime, anywhere. |
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CONSULT WITH 800-833-7958 |
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MASK-UP |
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Protect Against Airborne Particulate & Viruses While not everyone has the same sensitivity to wildfire smoke, it's still a good idea to avoid breathing smoke if you can help it. The EPA has reported that the biggest health threat from smoke comes from inhaling microscopic particulate matter distributed throughout the air. When it penetrates deep into your lungs, particulate can cause irritation and progressively result in aggravated chronic heart and lung diseases. On the heels of one of the worst wildfire seasons on record, air pollution levels are exceeding unhealthy levels. Additionally with elevated rates of transmittable viruses, society is seeking better respiratory protection. As the manufacturer of Airgami Masks, Geotech has worked closely with the founder of Air99 to perform N95 quantitative fit testing to develop better protection against airborne particulates and viruses. The Airgami mask features:
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Airgami has been featured in National Geographic "We need better face masks..." and has surpassed Phase 1 of the BARDA/NIOSH Mask Innovation Challenge. Need a better face mask? Airgami can help. Order at Airgami.life |
| AQI Basics for Ozone and Particle Pollution | |||
| Daily AQI Color |
Levels of Concern |
Values of Index |
Description of Air Quality |
| Green | Good | 0 to 50 | Air quality is satisfactory, and air pollution poses little or no risk. |
| Yellow | Moderate | 51 to 100 | Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution. |
| Orange | Unhealthy for Sensitive Groups | 101 to 150 | Members of sensitive groups may experience health effects. The general public is less likely to be affected. |
| Red | Unhealthy | 151 to 200 | Some members of the general public may experience health effects; members of sensitive groups may experience more serious health effects. |
| Purple | Very Unhealthy | 201 to 300 | Health alert: The risk of health effects is increase for everyone. |
| Maroon | Hazardous | 301 and higher |
Health warning of emergency conditions: everyone is more likely to be affected. |
| Source: https://www.airnow.gov/aqi/aqi-basics/ | |||
LIMITED TIME PROMOTIONS
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ENTERPRISE UAS FLIGHT TRAINING |
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"I enrolled in the course in preparation for the Part 107 exam. Initially, I thought the value of this training was solely the exam prep. After taking the course, the value is the knowledge, hands on training, and confidence to operate a UAS in the field. Leptron closes the gap between faking your way through or knowing what you are doing and why." |
The health and safety during this global pandemic is our number one priority during training. To ensure a safe environment for Geotech Drone Flight Training attendees, we continue to follow CDC guidelines to ensure our 3500 square-foot training room is sanitized, seating is distanced, and students receive individual training books and practice aircraft. Available Course Options:
Whether hiring a drone pilot |
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Enter the Geotech  Win valuable prizes and have some fun taking |
Entering the competition is easy, go here to review the rules and guidelines and download the entry form. Every entry must be accompanied by a completed Geotech Photo Competition Entry Form. |
| Look for Geotech at the events listed below. | |
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October 18-20, 2021 94th Annual Technical Exhibition WEFTEC 2021Join us in Chicago for WEFTEC 2021. WEFTEC is recognized as the largest annual water quality exhibition in the world, the expansive show floor provides unparalleled access to the most cutting-edge technologies in the field; serves as a forum for domestic and international business opportunities; and promotes invaluable peer-to-peer networking among registrants. Come visit us and see our latest groundwater equipment at Booth 1612. |
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November 1-3, 2021 2021 Colorado Rocky Mountain SWANA Annual ConferenceBreathtaking views of the Flatirons within close proximity to the University of Colorado Boulder are just some of the reasons that the 2021 Colorado Rocky Mountain SWANA Annual Conference will be in Boulder. Attendees will have the opportunity to hear about the latest solid waste topics ranging from recycling to landfill operations. Also, the speakers will be giving updates on what is happening in Colorado solid waste and how it could affect you. The conference is an ideal opportunity to meet and network with your peers and see the latest technology in the exhibit area. |
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November 1-4, 2021 WASTECON® 2021The Route to Sustainable Strength SWANA has re-engineered WASTECON into an executive leadership summit. They will be looking at leadership and management concepts through the lens of municipal solid waste management. Hear from renowned industry leaders and new voices about how they are creating their own "Route to Sustainable Strength". Explore topics such as diversity, equity & inclusion; how waste can be an economic driver for your community; how to fulfill your city's leaders' commitments to environmental improvements; and much more. Geotech will be in Booth #513 to show and demonstrate our latest landfill equipment. Make sure you don't miss this must-attend event! |
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December 14-16, 2021 NGWA Groundwater Week 2021Navigate the future of the industry this Groundwater Week is the one event where thousands of professionals from all sectors of the groundwater industry come together to discover solutions to current and future challenges. When at the event please come by and visit us at Booth 429. |
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To contact Geotech: Prices and promotions mentioned in this newsletter are valid through September 30, 2021. |
