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Can someone send the 24th edition of standard methods for the analysis of water and wastewater (APHA) ?
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Is there any guideline to determine the validity period of a calibration curve ( How often it should be updated/how long can use a calibration curve( some methods, for example, sulphate...
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Dear friends, this is regarding Total Dissolved Solids test. when we have a oil mixed sample how do we analyze TDS? when sample is filtered through a glass micro fiber filter paper, oil in the...
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Dear friend, in kjeldahl method, at the distillation step, we have to use NaOH solution,. in this solution we have sodium thiosulphate. what is the purpose of adding sodium thiosulphate?
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we have measured well water samples containing high level of alkalinity, chloride, hardness and TDS ( this area soil contains dolamite (Matale area)) but the problem is conductivity is 20 µS/cm...
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Dear friends, what is the acceptance criteria for duplicate analysis results, Standard methods for the examination for water and wastewater guideline for solids analysis is (TSS, TDS,...
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