Grade 9 students invented an automatic disinfectant spray machine, priced at VND 350,000

Just put your hand in, the machine will automatically spray disinfectant within 2 seconds without having to press the button like a regular antiseptic, limiting cross-contamination.

Coming to Cach Mang Thang Tam Secondary School (District 10, Ho Chi Minh City) these days, we will see the entrance gate has a box-shaped hand sanitizer with a height of about 50cm, 20cm across on a the table.

Automatic disinfecting sprayer is using Anolyte solution, which was awarded by Ho Chi Minh City Center for Young Science and Technology Development.

The machine is made of a wooden frame, has an obstacle sensor, a 12V pump, a switch . Outside is the wooden plate on which there are decal stickers recording instructions on how to wash hands to help users perform properly.

When the machine is connected to a power source, the user put his hand in, the sensor will identify to trigger the pump, and open the valve, the disinfectant solution will spray out in the form of rays. The amount of water more or less, fast or slow depending on the time to hand under the device and adjust the speed. However, it only takes us 2-3 seconds to get rid of the bacteria immediately. When reaching out, both pump and valve will disconnect extremely convenient.

The sides of automatic disinfection spray machine.

This device is made by a group of students including Tang Thanh Ha, Nguyen Ngoc Vu Sang, Nguyen Phuong Thanh Nghi (in the same class of 9/4), Vu Thi Ngoc Han (9/3 class), Nguyen Truong Mai Phuong (9/5). ), Cach Mang Thang Tam Secondary School made.

Mai Phuong, a member of the group, shared: 'The use of a hand sanitizer requires the use of a button, which takes a long time, consumes disinfectant solution, and increases the likelihood of cross-contamination. Therefore, we have invented an automatic disinfecting spray machine with an even nozzle on the surface to save solution and ease of use. People do not need to touch the device, do not need to manipulate, just put their hands on it to be disinfected. '

She also said that the process of assembling products is very fast, but the idea is very long because you can not meet face-to-face because of Covid-19 translation but have to schedule a chat group on Facebook to discuss."We assigned a male friend to buy components at electronics stores, and the two girls would learn online about design dimensions. Then the group would gather to make the product exactly one day, The total budget for this device is less than VND 350,000, " shared Mai Phuong.

Just put your hands in the range of 2-3 seconds will be clean immediately.When reaching out, both pump and valve will disconnect extremely convenient.

Automatic disinfection spraying machine using Anolyte solution was awarded by Ho Chi Minh City Center for Young Science and Technology Development. This is the same type of solution used by this agency for a mobile body disinfection chamber that has just been launched and installed in Ho Chi Minh City and Ho Chi Minh City Institute of Ethnic Medicine. spreading, preventing and fighting against Covid-19.

Mr. Doan Kim Thanh, Director of Ho Chi Minh City Young Science and Technology Development Center, said: 'Anolyte water products have been tested for ingredients according to the testing results of Ho Chi Minh City Laboratory Analysis Center. (CASE) should be very safe and effective when used '.

With the amount of pure solution, the above students added water as instructed to promote the effectiveness of use.

Teachers and students of Cach Mang Thang Tam Secondary School with the product of automatic disinfection sprayer

Mr. Nguyen Minh Triet, a computer teacher - a product tester, said: 'Although the product still has some limitations but with the level of 9th grade students, the invention of this machine is very good. I also encourage them to research and make 4.5 more products to serve within the school '.

Ms. Luong Du Mai, Principal of Cach Mang Thang Tam Secondary School, shared: 'Last time, the school also put a table with a sterilizing water bottle for teachers and visitors to disinfect hands. Now there's a handy automatic disinfection sprayer for you. This is an effective product in the present time. '