Dissolved oxygen in water

Dissolved oxygen (DO) means the amount of oxygen that is dissolved in the water. Oxygen is the essential element to all animals. No animals can survive without it. Dissolved oxygen in water makes aquatic life possible. Human being takes oxygen from the air with the lungs. On the other hand, Fishes take dissolved oxygen through their gills. Gills work better if the water contains more oxygen. Read more

Arsenic in drinking water

Higher level of arsenic in drinking water is dangerous for health. It is a semi-metal element. In general it is naturally found in the earth’s crust. It is odorless, tasteless and colorless. So you are not able to conform if your drinking water is contaminant to the arsenic. You can only determine the presence and concentration of arsenic in water with the laboratory analysis. It should Read more

Swimming pool chlorine stabilizer

Cyanuric acid used as a swimming pool chlorine stabilizer. The Chlorine sanitizes the pool water and keeps the water clean and safe for the swimmers. In presence of sun light and high temperatures it is very unstable; it breaks down into inactive components and losses its effectiveness. Therefore to maintain the chlorine level for water disinfection, we have to add more amount of chlorine. It Read more

Determination of permanent hardness of water

The available methods for determination of permanent hardness of water are O’Heners method, EDTA method and Soap titration method. Initially we have to know; what is hardness? –Hardness is due to presence of bicarbonate, sulphates, chlorides and nitrates of calcium and magnesium. It is expressed in ppm (part per million) as calcium carbonate. There are two types of hardness: Temporary Read more

Determination of total hardness of water

To determine the Total Hardness of Water, EDTA is the easiest method. Reason, EDTA reacts with all metal without alkali metal and the proportion is 1:1. The main cause of water hardness is dissolved salts of calcium and magnesium. Moreover the other ions like Strontium, Iron, Barium and Manganese also contribute of water hardness. Traditional it is measured by the amount of soap that is Read more

Determination of total amount of cations in water

Different types of metal salt are dissolved in natural, industrial or any other water. Therefore, the water contains different type of cations. The cations in water can be determined by using cation exchange resin. They are electron donors and consequent positively charged. Some common cations are Na+, K+, Mg2+, Ca2+, Fe2+ or Fe3+, Mn2+, Al3+. On the other hand, cation exchange resin contains Read more

Problems of iron and copper in pool water

The presence of metal such as manganese, iron and copper in pool water can lead to discolor the water when chlorine or any other oxidizer is added. It does not affect on the clarity of the water too much. Magnesium and manganese can also increase the hardness of the water. The metal may enter in pool water through by chemicals, pool equipment and plumbing or poles, toys, and tools that are fall Read more

Water Summit for clean drinking water in Minnesota

Governor’s Mark Dayton called his first Water Summit at the Intercontinental Saint Paul Riverfront Hotel, to focus public attention on how to clean drinking water and other supplies. The summit is held on Saturday, dated 27.02.2016. More than 800 individuals, including water quality experts, members of the public, local leaders, farmers, legislators, regulators, the business community, and a Read more

What is the reason for bubbles in bottled water

What is the reason for bubbles in bottled water? – The main reason for bubbles in water bottle is dissolved gases. There are many reasons for dissolving gases in the water. The amount of gases dissolved in water depends on pressure, temperature, types of dissolved gas, chemical composition of the bottled water. Atmospheric gases such as oxygen, carbon di-oxide, nitrogen and other gases Read more

Total dissolved solids in pool water

Generally the total dissolved solids in pool water are always rising. TDS is the measure of the total amount of the soluble substances that are dissolved in the water. The including soluble substances are calcium, manganese, sodium, copper, iron, other trace metals, chlorides, sulfates, rubber ducks, swimmer waste, every bit of dissolved dust, pollen, total alkalinity, conditioner, and all Read more