1. Can I retrofit a sensor into my existing datalogger? You can retrofit a sensor into your existing datalogger as long as it can collect potential data in the range of -2 mV to 2 mV and as small as several mV. 2. What is the shelf life? The shelf life is generally 6 months. Different types of sensors have different shelf lives. See product specification for details. 3. What is the lifetime in solution? The lifetime in solution is generally more than 1 [...]
United Science will be presenting its portfolio of products and technologies at the oil and gas innovation forum on April 30, 2013. The event will be held in The Woodlands, TX. For more information, visit http://oilandgasinnovation.com/events/. The Innovation Showcase will take place on the 3rd floor of Anadarko Petroleum’s headquarters building in The Woodlands. The event will run from 8:00 am to 4:30 pm. To attend, please register now (www.oilandgasinnovation.com/events). United Science is scheduled to give a 15 minute presentation. The presentations will [...]
United Science will be presenting and exhibiting at the annual meeting and exhibition ofAOAC International in Chicago, IL Aug 25-28. Go to http://www.aoac.org/meetings1/127th_annual_mtg/main_2.htm to sign up. We look forward to seeing you in Chicago.
United Science will be launching new sensor and sorbent products at Pittcon. Come visit us at booth 3506 for free sample coupons and to discuss new applications. Email Doug Fryer (email@example.com) to organise a meeting at the event Click 2013 pittcon press release to view the United Science press release. Pittcon Oral and Poster Presentations Sunday March 17th, Room 119B 3:35 (210-8) Comparison of Carbon-Modified Silicas, Carbon-Clad Zirconia, and Porous Graphitic Carbon for Use in High Performance Liquid Chromatography DWIGHT R STOLL, Gustavus Adolphus College, Paul Young, Tuan [...]
A recent presentation by Stephen Lehotay of the USDA explained the use and benefits of the QuEChERS technique. It is a excellent primer and a review of the state of the art in QuEChERS. Both the webinar and the presentation are linked here.
Chunze Lai, Ph.D. Introduction: A novel highly selective sensor for silver is described below. This sensor is based on Teflon®like matrixes and a new fluorophilic silver receptors. Background: Silver is utilized for a wide range of applications. Due to their antibacterial properties, silver salts and silver nanoparticles are used for the disinfection of drinking water and the preparation of topical gels, specialty bandages, implantable prostheses, and catheters. Every year, about 2500 tons of silver are released into the environment and approximately [...]
Li Chen, Ph. D. Introduction: We developed potentiometric cyanide (CN–) sensors based on receptor-doped polymeric membranes, as described below. This sensor can be applied to erform on-line CN– monitoring in mining industry for controlling of cyanide leaching and detoxification processes. Background: The high toxicity of cyanide and environmental concerns from its widely and continuously industrial use arouse interests in selective and sensitive methods for cyanide detection in various matrices, such as drinking water, surface water and biological fluids. To date, cyanide [...]
CarbonX for QuEChERS A short video demonstrating the use of United Science’s new product, CarbonX for QuEChERS, and its ability to remove pigments. The method being used here is the AOAC 2007.1 Pigmented method. Spinach is a difficult matrix to deal with, but with CarbonX for QuEChERS you can remove the pigment you don’t want without removing the pesticides you do.
in situ Carbonate/Bicarbonate/Carbon Dioxide Monitoring with Teflon® like Carbonate-Selective and pH SensorsUnited Science
Li Chen, Ph. D. Introduction: A novel highly selective sensor for carbonate (CO32-) is described below. This sensor is based on Teflon®like matrixes and a new fluorophilic carbonate receptors. In conjugation with Teflon®like pH sensors, this sensor system can provide in situ monitoring of Carbonate (CO32-) /Bicarbonate (HCO3–) /Carbon Dioxide (CO2). Background: A need for accurate and rapid determination of total carbon dioxide (i.e., carbon dioxide, bicarbonate and carbonate) arises from clinical chemistry, environmental analysis and industry. Polymeric membrane electrodes with [...]