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05/21/2021 - 12:59
Our Water Test Book Cover CONTROL METHODS AND Required EQUIPMENTS and recommended Analytical Methods, Recommended Analytical Equipment, Composition Of Reagents, Preparation Of Sample & Care Of Equipment, METHODS (Titration Methods, Colorimetric Methods,...
01/11/2021 - 19:42
Free Chlorine, DPD Photometric Method (0-4 ppm)
The test for chlorine is a test for the hydrolysis products of chlorine gas in water. Chlorine gas is soluble in water, forming hypochlorite ion and hypochlorous acid. It is in the latter form that chlorine...
01/11/2021 - 18:20
Chromate Titration Method (10-100 ppm as CrO4 )
Chromates are amongst the most widely used chemicals for the control of corrosion in industrial cooling water systems. However, only the chromate or hexavalent form of chromium salts functions as a corrosion...
01/11/2021 - 18:30

Acidity (Free Mineral) Titrimetric Method (0-200 ppm)

Acidity (Free Mineral) Free mineral acidity (FMA) is present in a sample whenever its pH is less than 4.3. Although it is unusual to encounter a raw water containing free acidity when acidity is present, it is very...

01/11/2021 - 15:24
Free Carbon Dioxide: Direct Titration Method, (0-100 ppm)
 
Carbon dioxide exists in aqueous solutions as “free” carbon dioxide and in the combined forms as carbonate and bicarbonate ions. “Free” carbon dioxide refers...
01/11/2021 - 17:42

Alkalinity Titrimetric Method (0-200 ppm)

The presence of alkalinity in a water sample may be due to many different substances. However, for the sake of simplicity, the presence of bicarbonate, carbonate, and hydroxide ions is commonly ...
01/11/2021 - 16:28

Methanol is very sensitive to oil contaminants. The following test method uses methanol as a testing medium. The methanol must therefore be guaranteed free from any hydrocarbon contaminants.

About one m2 of the tank wall is carefully washed with cotton and...

01/09/2021 - 11:15

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