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pH or acidity is used to express the degree of acidity (or alkalinity owned by a solution. That meant “acidity” is the concentration of hydrogen ions (H +) in water solvent. The pH values ​​ranging from 0 to 14. A solution is said to be neutral if it has pH = 7. The pH value> 7 indicates alkaline solution properties, ...

The working principle of this tool is to use the DO meter or probe oxygen electrode consists of a cathode and an anode immersed in an electrolyte solution. DO meter on the instrument, typically using a cathode of silver (Ag) and an anode lead (Pb). Overall, this electrode is coated with a plastic membrane that is semi-permeable to oxygen. The ...

Water hardness is the content of certain minerals in the water, generally ionkalsium (Ca) and magnesium (Mg) in the form garamkarbonat. Hard water or hard water is water that has a high mineral content, while soft water is water with a low mineral levels. In addition to calcium and magnesium ions, can also cause the hardness of the other metal ...

Semangun (1996) describes plant diseases when viewed from the angle of biology is a deviation from normal trait that causes the body can not perform normal physiological activities, while from the economic angle plant diseases is the inability to deliver sufficient results, both quantity and quality. Microorganisms (microbes) are not directly cause a disease, but outside circumstances have weakened the ...

Sampling for water quality measurement is a critical point at this stage of the measurement of water quality. Sampling is the first step that can determine the accuracy of water quality data that will be used. Before learning the sampling technique you should know the kinds of samples / examples of water beforehand. Samples of surface water comes from the ...

The success of the sampling method is highly dependent on the equipment for sampling, a technique or way of making, implementation and management as well as the improvement of laboratory analysis. more than 50% of the invalidity of the data analysis of water kuallitas is affected by the sampling technique is not appropriate. a. Determining the location of sampling The ...