Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Wilmad LG-6890-120 Borosilicate Glass Midget Graduated Impinger
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Calibrated in 5mL subdivisions. Used to collect samples of pollutants in air. Particularly suitable for determinations of sulfur dioxide by the West and Gaeke method and of oxidants, including ozone, by the alkaline potassium iodide method. For details of the methods see "Selected Methods for the Measurement of Air Pollutants," U.S. Public Health Service Publication No. 999-AP-1 1 (May 1965). The orifice at the bottom of the bubbler tube is 1mm. It passes 0.09-0.11 CFM of air at a vacuum of 12" H2O. Scientists rely on the expertise and artistic skills of Wilmad-LabGlass' engineers and glass specialists to manufacture NMR and EPR consumables and laboratory glassware of the highest quality. Used daily in academia, healthcare and chemical, petroleum and other industrial applications, Wilmad offers 7000+ items as part of their standard catalog as well as custom fabrication for individual glassware, glass repair services and OEM glass parts.
BugGuide is a National Moth Week Partner. How to add your National Moth Week 2021 photos. July 17-25.
Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2
National Moth Week 2020 photos of insects and people.
Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27
Discussion, insects and people from the 2018 gathering in Virginia, July 27-29
Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12
Photos of insects and people from the 2014 gathering in Virginia, June 4-7.
Photos of insects and people from the 2013 gathering in Arizona, July 25-28
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