Experiments on the preparation of membrane agents
Membrane agent refers to the membrane preparation made of drug and suitable film-forming material through processing for oral or mucosal external use. The resea
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Measurement of ammonia nitrogen in water
Ammonia nitrogen (NH3-N) is present in water as either free ammonia (NH3) or ammonium salts (NH4"), and the ratio of the two depends on the pH of the water and
Water pH Measurement Experiment
The pH value (pH value) of natural water is mostly in the range of 6 to 9, which is also the pH control range in China's wastewater discharge standards. pH valu
Water conductivity measurement experiment
Electrical conductivity (Electric conductivity) is the ability of a solution to conduct an electric current expressed as a number. Pure water has a small conduc
Bacillus subtilis fermentation culture experiment
Starting with test tube strains, the culture is added by expanding step by step, eventually fermenting Bacillus subtilis using a mechanical mixing tank. Shaking
Experiment on the determination of water chromaticity
Clean water should be colorless at shallow depths and light blue-green at deeper depths. The presence of humus, mud, plankton, metal ions such as iron and manga
Measurement of suspended solids in wastewater
Suspended solid (Sespended solid, abbreviated as SS) refers to the solid material suspended in water, including inorganic and organic matter insoluble in water,
Wastewater Turbidity Measurement Experiment
Turbidity (Turbidity) is caused by the presence of sediment, clay, organic matter, inorganic matter, plankton and microorganisms and other suspended substances
Experiments for the determination of chemical oxygen demand in water samples
Chemical oxygen demand (Chemical oxygen demand, referred to as COD), refers to the amount of oxidant consumed when treating water samples with potassium dichrom