sdst: The Solution To Be Rid Of COVID-19 For Good?

In the wake of the COVID-19 novel coronavirus, many corporations have been ramping up their cleaning efforts. One example is the recent measures taken by Changi Airport to add an extra layer of protection in between cleaning rounds, by coating high contact surfaces with SUTL Environtech’s disinfectant coating –sdpro.

I am humbled and thankful for the increased interest shown in our disinfecting agents sdpro and sdst.

Over my 30 years career in microbiology, I have become astute to the evolving microorganism environment, and even more worryingly, the lack of evolution in our cleaning habits.

While the data we use on our phones have upgraded from 3G to 5G in the span of the last 10 years, our cleaning agents are still stuck on the equivalent of ‘3G technology’, even though the germs around us are evolving into their 5th generation.

It’s time for us to upgrade our cleaning habits to better protect ourselves using the latest available disinfectant technology. 

I hope that this article helps educate more people on how to better protect themselves and keep their environments fresher, cleaner and safer from harmful germs and bacteria for a longer period of time.

What is sdst and sdpro?

sdpro is a high-performance disinfectant coating with antimicrobial technology, lasting more than 6 months with a single electrostatic spray application. It is intended for large-scale application.

sdst is its consumer-intended variety, available in portable spray bottles for application on personal effects and home surfaces. It is effective upon application for up to 90 days.

SUTL Environtech is the proprietary and sole distributor of SD Pro and SDST in Singapore and Southeast Asia.

Why is sdst effective against COVID-19?

  • sdst contains antimicrobial actives, meaning it protects against bacteria, fungus AND viruses (as compared to antibacterial products which only protect against bacteria). sdst also contains the US CDC and EPA recommended ingredient which is effective against COVID-19 and similar strains of coronavirus.
  • sdst molecularly bonds to any surface semi-permanently and imparts antimicrobial activity to the treated surface. This antimicrobial active physically controls and ruptures the target organism’s cell membrane on contact, effectively killing the microbe.
  • sdst has been tested to be effective against the H1N1 virus (flu virus), as well as against the norovirus (non-enveloped). According to CDC’s guidelines:

“Product capable of inactivating “non-enveloped viruses (norovirus, rotavirus, adenovirus, poliovirus) are broadly antiviral and capable of inactivating both enveloped and non-enveloped viruses”.

What makes sdst more effective than regular sanitizers and disinfectants?

What differentiates sdst from regular disinfectants and sanitizers is how it continues killing microbes (bacteria, fungus and viruses) even after drying.

Other cleaning agents kill germs during the disinfecting process, but the killing stops once the solution dries out, hence the need for repeated rounds of disinfecting.

sdst is a unique agent in that it Self-Disinfects (i.e. continues killing germs on its own without re-application) 24/7 for up to 90 days with just 1 application. It forms a semi-permanent antimicrobial coating on the treated surface. There are no other known ‘dry’ disinfectants.

A simple example: Every morning at 7am, the office doorknob is cleaned with alcohol and cleared of all existing microbes. At 7.01am, the alcohol dries out and no more microbe killing occurs. When people start entering the office at 8am, the germs and bacteria on their hands get transmitted onto the doorknob, getting accumulated and passing on to every subsequent person that touches the same door knob. All microbes are only cleaned off again after the next cleaning session at 9am.

With sdst, all it takes is a single spray at 7am, and the killing of microbes continue 24/7 no matter how many people continue touching the door knob through the day.

Is there a need to apply disinfectants on surfaces? Isn’t regular good hygiene (e.g. frequently washing hands with soap and water) sufficient?

Here’s another simple example: The sink tap.

Let’s assume that you don’t own an automatic sensor tap at home and rely on turning the tap handle to turn the water flow on and off. Before you wash your hands, you turn the tap to turn on the water flow. Any germs existing on your hands have already been transferred to the tap. After washing your hands with soap & killing the germs on your hand, you touch the same tap to turn the water flow off, effectively picking up the same germs from before your hand wash.

Even if you did have an automatic sensor tap, you would have touched the door handle to enter and exit the bathroom. All these contact points would have picked up germs pre-wash.

Hence, the most effective way to fully eliminate germs is to apply a constant disinfectant coating such as sdst on these high contact surfaces, to ensure round-the-clock killing of microbes.

Is sdst safe to use?

Laboratory studies have shown that sdst is not harmful to humans and animals. SUTL Environtech has been effectively partnering with childcare centres in Singapore since 2018, with proven success in reducing rates of transmittable infections by 80-100% with no side effects on children. Many long-term sdst customers are also pet owners and there have been no reported side effects in these households.

If you are interested in learning more or purchasing sdst for your own household, you may do so from:

If you have any other questions about sdst or about keeping safe from viruses and transmittable diseases using ‘5G’ cleaning technology, please leave a comment below and I will answer each question to the best of my abilities. 

- Dr Yeo Wee Ming