If you suspect there is a problem with your home country. You need to take a water sample for testing and analysis to ensure the health of your family. Read the notes below to understand the water test procedure now!
Before going to a water test, you need to determine clearly what is the purpose of using water in the home. There are 3 types of purposes corresponding to 3 separate testing criteria: Water for domestic use, drinking water and bottled water.
If you do not know about national regulations, please consult:
>National regulation QCVN 01: 2009 / BYT on drinking water
>National regulation QCVN 02: 2009 / BYT on domestic water
Each standard has a series of criteria to be tested, besides the characteristics of the water source in each region are also different. So, in order for water test results to be both accurate and cost-effective, you should choose the basic parameters for testing such as Arsenic, Calcium, Ammonium, Manganese and Iron …
Here are some notes when taking water samples for testing. Failure to do so will result in inaccurate test results.
Apparatus for water sampling: Get a clean plastic or glass bottle. Plastic or glass stopper (not lined paper will affect the test water quality)
Location of test water sampling: Take the water directly from the water source you want to test
Sampling water for physical and chemical assay:Rinse the bottle several times with source water. Fill the bottle with water. Cover tightly.
Water sampling for microbiological, BOD, and nitrits testing: Select bottles and glass stoppers, and sterilize both bottles and stoppers before sampling. Disinfect the inside and outside of the nozzle and sampler hands with alcohol. Fill the bottle with water. Cover tightly.
Sample capacity: Depending on the testing criteria, the amount of sample to be taken is calculated.
+ Chemical and physical test of 13 criteria: 1 liter of sample water.
+ Microbiological test: 0.5 liter of sample kept refrigerated (not more than 24 hours).
+ Bottled drinking water test: 4 liters of sample water for physical and chemical tests and 2 liters of cold water for microbiological testing, stored in finished bottles. They all filled the bottle and covered it
At HanoiYou can bring water samples for testing at:
– Vietnam Academy of Science and Technology – No. 18 Hoang Quoc Viet
– Institute of Geology – No. 84 Lang pagoda
– General Department of Quality Measurement – No. 8 Hoang Quoc Viet
– The Inspection Institute of the Ministry of Health – No. 54 Hai Ba Trung
– Institute of Occupational Medicine and Environmental Hygiene – 1B Yecxanh, Hai Ba Trung
In Ho Chi Minh CityYou can bring water samples for testing at:
Pasteur Institute of Ho Chi Minh City – No. 167 Pasteur, Ward 8, District 3, City. Ho Chi Minh
Source link < How to take water samples for analytical testing > Healthdrinkshub.com