Talking tech since 2003

Life has to go back to normal despite the coronavirus threat, therefore all countries are gradually coming out of their lockdown arrangements. As economic activity gradually picks up, more businesses are opening up to serve customers and schools are beginning to open. Since covid19 is still a huge challenge, there is need to protect the bus and train drivers, workers, customers, teachers and students from any viruses that may be in the air and surfaces after a cough or a sneeze. Therefore, businesses, transporters and schools have a duty to keep their premises disinfected.

Disinfecting surfaces and the air manually is too labor-intensive, slow, inefficient and inaccurate. Fortunately, new problems always inspire new solutions and the coronavirus pandemic is no exception. People are coming up with novel ideas and solutions for the challenges of covid19. For example, new machines have been designed with the idea of disinfecting businesses and any public spaces where people may gather. We spoke to the team at LAST SPRAY LLC – the company that is making the machines.

What are the two machines that you make?

We manufacture and sell a disinfecting sprayer and a disinfecting fogger machine. The machines are available online on our website:

Last Spray LLC
Yong Yi

Which businesses should use the machines?

Both machines are ideal for sanitation and epidemic prevention in offices, hospitals, restaurants, hotels, houses, buses, trains, schools and other public places. They are fast, reliable, efficient, effective and convenient.

Please describe the disinfecting sprayer. What are its advantages?

The disinfecting sprayer that we make is called LAST SPRAY Electric Sprayer. It is powerful enough to spray up to 19-23 feet (6-8 meters). It produces 50-micron particles of disinfectant and the particle size can be adjusted if necessary. Because the particles are very small, the surfaces don’t get too damp or wet.

Can the disinfecting sprayer be used in any country?

Yes. Any country that uses 110V power can use this machine without making any adjustments. Those countries that use other voltages for their mains power can simply use a transformer and possibly an adaptor for the plug. Other specifications include: tank capacity: 7 liters; power: 600-1000w; and spray volume: 400 ml/min.

What are the advantages of the disinfecting fogger machine?

The disinfecting fogger machine is called the Last Spray 360 System. This machine is more heavy duty and therefore it can disinfect larger spaces. It uses quaternary ammonium salt, an effective, nonirritant, and low toxicity disinfectant that has been recommended as disinfectant for the prevention of coronavirus by the Chinese Center for Disease Control and Prevention. It is especially effective for places with metal objects. The machine and the disinfectant work synergistically to kill bacteria, viruses, mycoplasmas and other pathogens in the air, walls, ceilings and in hidden corners by forming a fog that spreads everywhere. The fog can last up to 5 hours in a closed space.

The machine is easy to use and saves labor since is needs one operator who simply presses the start button and lets the machine do its work. It uses disinfectant efficiently, with 83ml covering 230sqft space. The surfaces never get wet.

What is unique about the disinfecting fogger machine?

This machine only needs a few minutes to heat up and the operator can set the disinfection time so that the machine stops automatically. According to tests done, it takes only two minutes to disinfect a 230sqft closed space. That is instant disinfection without the need to manually dilute disinfectant.

Can the disinfectant fogger machine be used in any country?

Yes, the disinfectant fogger can be used in any country because we make a 110V version. Therefore, countries that use 110V can use the machine. Perhaps later we will also support 220-240V mains power but not right now. However, countries that use a different mains power simply need to use a transformer and maybe an adaptor with the machine.

What are the other specifications of the fogger machine?

Other technical specifications include power: 3000W (for the 220V version which is not stocked at present), 2400W (for the 110V version which is fully stocked right now), tank capacity: 5 liters x 2; preheat time: 7 minutes; net weight: 21kg; dimensions: 560mm x 420mm x 430mm. Consumption rate is 5L x 2 to support 2 hours of disinfection.

What advice do you have for everyone?

If you have to run a business or a school, please disinfect your premises for your sake and for the sake of everyone who comes in.

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