Apr 06, 2018 · 2. Materials and Methods. Our nephelometric sensor system was built using a cylindrical self-designed polyoxymethylene (POM) cuvette holder that uses 25-mm-round glass cuvettes (2434706, Hach) (see Figure 1).For illuminating the sample, an SMD LED emitting at 860 nm (SFH 4253, Osram, Munich, Germany)in the near infrared region, which observes the …
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