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, ...
Read More »Measurement of Dissolved Oxygen Meter
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 ...
Read More »Total Hardness
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 ...
Read More »Attack Symptoms In Seaweed
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 ...
Read More »Water Quality Measurement
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 ...
Read More »Waktu Pengambilan Sampel Air
Untuk pemantauan kualitas air, interval waktu pengambilan sampel diatur pada hari dan jam yang berbeda, sehingga dapat diketahui perbedaan kualitas air setiap hari maupun setiap jam. Sebagai contoh apabila pengambilan sampel pertama dilakukan pada hari Senin jam 06.00, maka pengambilan sampel selanjutnya dilakukan pada hari Selasa jam 07.00, dst Frekwensi pengambilan sampel Frekwensi pengambilan sampel untuk keperluan pemantauan dilakukan berdasarkan ...
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