Chloride Mohr Method (0-200 ppm)
The chlorides of calcium, magnesium, sodium iron and other cations normally found in water are extremely soluble. Since no precipitation occurs, the chlorides present in boiler and cooling waters are usually proportional to the...
01/11/2021 - 17:53
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
Calcium, Titrimetric Method (0-200 ppm as CaCO3 )
The determination of calcium in a water analysis is closely allied to the determination of hardness, since hardness is caused primarily by the presence of calcium and magnesium.
01/11/2021 - 17:19
Ammonia Photometric Method (0-2 ppm) 
Nitrogen exists in many forms in aqueous systems. These are nitrate, nitrite, ammonia and organic nitrogen. Organic nitrogen sometimes referred to analytically as albuminoid or fixed nitrogen, occurs naturally in...
01/11/2021 - 16:58

Aluminium, Eriochrome Cynine R Method (20-300 ppb)

Hydroxide Alkalinity

The method for hydroxide alkalinity is considered accurate only to within 10 per cent. High silica...

01/11/2021 - 16:48

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

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

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01/11/2021 - 14:47

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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