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  • Users: queiry
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  1. queiry

    Chamber with temperature and humidity control

    I have a metal chamber that is 43in x 29in (32in tall), where the bottom is covered with about 3in of sand to grow bacteria. I want to be able to control temperature (5-50C) and humidity (10-90%), and I need help in designing the system. I would also like to be able to cycle the changes...
  2. queiry

    Guar

    From what I've read, guar is a natural polymer. I want to use it in a solution (mostly sugar and guar) to mix into sand to form a crust (after drying). I heard that citric acid should be added. I have two questions: - how much citric acid needs to be added? - what is the purpose of citric...
  3. queiry

    compression test on sand

    A chemical has been developed for dust abatement, made up of polysaccharide, surfactant, mordant and water. I have to perform a compression test on the sample (solution mixed with sand and cured). The resulting crust is similar to concrete, but not as strong. I have to test various...
  4. queiry

    compression test on sand

    A chemical has been developed for dust abatement, made up of polysaccharide, surfactant, mordant and water. I have to perform a compression test on the sample (solution mixed with sand and cured). The resulting crust is similar to concrete, but not as strong. I have to test various...

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