nitrogen application for lcd displays free sample

On-line analyzer for automatic, reagent-free measurement of the true total bonded nitrogen (TNb) according to DIN 38409 chapter 27, ISO TR11905-2 and ENV 12260 in industrial wastewater or process water streams, standard version for one to six sample streams,

Installation of an Electro-chemical cell for the analysis of nitrogen monoxide in the gas phase for on-line determination of the total nitrogen content according to ENV 12260.

Analytical system consists of high temperature oxidation with a working temperature of 1200 °C for determination of the total nitrogen content, flow-through sample vessel with magnetic stirrer, vessel for calibration solution, sample transfer and injection module with septumless injection port, acid filter and carrier gas cooler.

Control / evaluation level with industrial CPU, menu-driven, self-explanatory software with integrated help files, 10.4-inch touch-screen interface, Graphic-LCD-screen, presentation of the measured values in graphical or tabular form, display of calibration values, daily protocol or 24-hours graph, data storage for one year. Memory card storing the operational software for automatic startup in the event of power loss or interruption, automatic calibration procedure.

The RapidVap N2 Evaporation Systems offer a more efficient, automatic alternative to Kuderna-Danish and rotary evaporators and may be used with a broad range of aggressive chemicals. In RapidVap N2 Systems, a stream of nitrogen or dry gas is directed downward onto the surface of the sample. Nitrogen blow down reduces the partial pressure directly over the liquid to speed evaporation and help remove the solvent as it evaporates. Nitrogen may be programmed for 2, 4, 6 or all 8 tube locations. Vortex motion and dry heat may also be applied to further accelerate processing.

The block holds eight large samples, up to 450 milliliters each, making it efficient for environmental and residue testing. An accessory block that holds eight 170 milliliter tubes suitable for solid phase extraction is also available. In many of these applications, the samples should not go to dryness. The unique Cool-Zone block and tube design significantly reduces the evaporation rate after end point is achieved. The Cool-Zone insulates the samples and allows the researcher adequate time before the samples reach dryness to remove them or to perform solvent exchange procedures. Alarms that signal when timed end point has occurred and when the RapidVap senses that the process is nearing completion allow for unattended operation.

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96 Well Plate EvaporatorAutomated Evaporation System:Nitrogen Evaporator 96 Model: AT-EV-96 Concentration Evaporator Workstation is a microprocessor-controlled evaporation system for simultaneous, automated concentration of multiple samples with the unattended operation, convenience and speed. It can accommodate one or two 96-well microplates or deep well plates. Microprocessor-controlled evaporation system designed for the simultaneous and automated concentration of multiple samples with the unattended operation, convenience and speed.

Key Applications:Genomic and proteomic applications that require concentration of purified extracts. The evaporation of DMSO solvent in plates is very common as well as HPLC solvent mixtures of Methanol or Acetonitrile with water. The 96 complements the Zephyr SPE workstation that is widely used for drugs of abuse concentration of the eluant and other pharmaceutical SPE methods.

96 Well, Plate Nitrogen Evaporator:Nitrogen Concentrator Model: AT-EV-96 is a Precision Sample Concentrator by Nitrogen Purging. It is a newly designed Sample Concentrator for multiple sample pre-concentration of in organic media. A Table Top Model. The unit can be set to a constant Flow and constant Temperature to ensure good evaporation.

We have introduced Nitrogen Evaporators for sample evaporation from Well plates. This system can be used for evaporation of sample from single Standard or Deep Well Plates.

Applications:Nitrogen Evaporator 96 plate has two independent compartments that accommodate 1 mL or 2 mL standard or deep well plates. Each compartment has independent control of gas flow and temperature.

AT-EV-50 Nitrogen Concentrator /Sample Evaporator (Turbo Athena Technology, Nitrogen Concentrator Model: AT-EV-50 is a Precision Sample Concentrator by Nitrogen Purging. It is a newly designed Sample Concentrator for multiple sample pre-concentration of in organic media. A Table Top Model. The unit can be set to a constant Flow and constant Temperature to ensure good evaporation. Also, the Nozzle height can be electrically set to the required level. It is fully microprocessor controlled and water bath, Temperature, gas station, more advantage LCD display, over Temp. Heater ON/OFF LED, door open display, high-temperature Thermal Coutour for safety for best quality and best performs.

Technical Specifications:Space requirements: Tabletop or fume hood with minimum dimension L, W & H (cms) 70 x 50 x 65 table weight capacity 35 kg minimum requirement Work area: Flat, level, stable, surface Power supply: 230 AC/5amp single phase stable & well grounded Gas supply: Laboratory grade nitrogen Inlet pressure: 60 PSI minimum, 100 PSI maximum (And ON/OFF control valve)Exhaust: Exhaust duct outlet or fume hood - the exhaust duct must go outside the lab.Water bath capacity: 6.5 Ltr. distilled water (6.5 Ltr. do not overflow)

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Enjoying your HD TV?  Nitrogen trifluoride is one of several gases used during the manufacture of liquid crystal flat-panel displays, thin-film photovoltaic cells and microcircuits. Many industries have used the gas in recent years as an alternative to perfluorocarbons, which are also potent greenhouse gases, because it was believed that no more than 2 percent of the NF3 used in these processes escaped into the atmosphere.

NF3 is 17,000 times more potent as a global warming agent than a similar mass of carbon dioxide. It survives in the atmosphere about five times longer than carbon dioxide but because there were no accurate measurements before it was assumed by the IPCC to be trivial.    It was not covered by the Kyoto Protocol, the 1997 agreement to reduce greenhouse gas emissions signed by 182 countries.   NF3 emissions have been estimated to contribute only about 0.15 percent of the total global warming effect contributed by current human-produced carbon dioxide emissions.

Using new analytical techniques, a team led by Scripps geochemistry professor Ray Weiss made the first atmospheric measurements of nitrogen trifluoride (NF3).   The amount of the gas in the atmosphere, which could not be detected using previous techniques, had been estimated at less than 1,200 metric tons in 2006. The new research shows the actual amount was 4,200 metric tons. In 2008, about 5,400 metric tons of the gas was in the atmosphere, a quantity that is increasing at about 11 percent per year.

"Accurately measuring small amounts of NF3 in air has proven to be a very difficult experimental problem, and we are very pleased to have succeeded in this effort," Weiss said. The research will be published Oct. 31 in Geophysical Research Letters.

Different generations of collection cylinders used to collect air samples from locations around the world over the past 30 years. Scripps Institution of Oceanography at UC San Diego geochemistry researchers Ray Weiss and Jens Muehle led a study that found that the greenhouse gas nitrogen trifluoride, used in the manufacture of flat-panel monitors, escapes to the atmosphere at levels much higher than previously assumed.  Photo Credit: Scripps Institution of Oceanography, UC San Diego

The Scripps team analyzed air samples gathered over the past 30 years, working under the auspices of the NASA-funded Advanced Global Atmospheric Gases Experiment (AGAGE) network of ground-based stations. The network was created in the 1970s in response to international concerns about chemicals depleting the ozone layer. It is supported by NASA as part of its congressional mandate to monitor ozone-depleting trace gases, many of which are also greenhouse gases. Air samples are collected at several stations around the world. The Scripps team analyzed samples from coastal clean-air stations in California and Tasmania for this research.

"As is often the case in studying atmospheric emissions, this study shows a significant disagreement between "bottom-up" emissions estimates and the actual emissions as determined by measuring their accumulation in the atmosphere," Weiss said. "From a climate perspective, there is a need to add NF3 to the suite of greenhouse gases whose production is inventoried and whose emissions are regulated under the Kyoto Protocol, thus providing meaningful incentives for its wise use."

"This result reinforces the critical importance of basic research in determining the overall impact of the information technology industry on global climate change, which has already been estimated to be equal to that of the aviation industry," added Larry Smarr, director of the California Institute for Telecommunications at UCSD, who was not involved in the Scripps study.

Michael Prather is a UC Irvine atmospheric chemist who predicted earlier this year that based on the rapidly increasing use of NF3, larger amounts of the gas would be found in the atmosphere. Prather said the new Scripps study provides the confirmation needed to establish reporting requirements for production and use of the gas.

• Purge Air Supply: Clean, dry, particle-free air at 80-120 psig (5.5 - 6.9 Bar); 425 LPM (15 SCFM) for startup and then 130 LPM (4.6 SCFM) for normal operation

The Series 500 handheld unit can store a limited number of data points (8188), meaning that the length of time that data can be logged depends upon the frequency and number of data points recorded. For example:If you are logging every minute for one gas (i.e. one data point per minute) you can log for 8188 minutes.

S500: 0-5V Analog output (current reading only), RS232 (current, logged data and instrument control) to PC software via USB adapter. RS232 protocol available upon request for third party software integration.

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