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Indicators

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WICOM Germany GmbH, Germany

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Carl Roth GmbH + Co. KG, Germany

Carl Roth, the expert consultation for labware, life science and chemicals for more than 140 years. With around 30,000 articles available and a round-the-clock delivery service within Germany, we are the partner that research, scientific and technical laboratories can rely on. Furthermore, we devel more

News Indicators

  • Tiny algae ideal for sniffing out nutrient pollution in water

    The key to effectively measuring damagingly high levels of nutrients in freshwater streams lies in the microscopic organisms living in them, according to a group of Drexel University scientists. A team largely made up of researchers from the Academy of Natural Sciences of Drexel University analyzed more

  • Achieving better and cheaper biodiesel

    Is there any connection between wine and biodiesel? The answer is yes, however surprising it may seem. Acetals are chemical compounds found in many wines, like port, for example, which give it a unique, sweet smell. However if acetals are blended with biodiesel, they improve its properties. The SUPR more

  • New citation indicators needed to measure research performance

    How do you compare the impact of a researcher in chemistry or physics with a molecular biologist who may be working on similar projects? Two experts support the use of citation indicators that are based on percentiles, a statistical parameter that allows for comparisons with a carefully defined grou more

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Infographics Indicators

The Chemistry of Poinsettia Plants

Following on from the start of the Chemistry Advent Calendar yesterday, here’s another festive post, this time looking at the chemistry of the poinsettia plant. The red leaves of the poinsettia plant can be used to make a pH indicator, due to their chemical composition; this is actually something of more

The Colours & Chemistry of pH Indicators

Most of us, chemists or otherwise, have probably come across pH indicators at one point or another. I’d be surprised if there’s anyone out there who hasn’t, back in school, carried out the standard experiment of adding universal indicator to a variety of household liquids to identify them as acidic more

Publications Indicators

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Definition

Indicator diagram

Indicator diagram In the technology of the steam engine , the indicator diagram was a device developed by James Watt and his employee John Southern to improve the efficiency of engines. The diagram is simply a chart of the pressure of stea ... more

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