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Blue-Zone Technologies Ltd. News & Events

April 29, 2020
Blue-Zone Technologies Ltd. Receives Drug Approval From Health Canada for Its Branded Generic DESFLURANE, USP. [CLICK HERE]
Blue-Zone prepares for local production and commercial launch of Desflurane, safeguarding access to this critical drug for all Canadians and providing significant costs savings to hospitals

TORONTO, On. – April 29, 2020: Blue-Zone Technologies Ltd. announces receipt from Health Canada of a Drug Identification Number (DIN) for DESFLURANE, USP, an important drug used for general anesthesia. The DIN permits Blue-Zone to produce and commercially launch its branded generic drug. Desflurane makes up approximately one-third of the global inhalation anesthesia market, which, according to a recent Global Market Insights report, is projected to reach USD $1.9 billion by 2025.

This is the first known approval in the world for a drug produced using a distillation-based process. Blue-Zone created and then globally patented its unique processes for capturing and processing the costly and acutely environmentally harmful anesthetic gases used in surgeries. These gases were previously vented directly into the outside community.

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April 16, 2020
Blue-Zone Begins Manufacturing Hand Sanitizers (COVID-19)
To assist with the emergency response to COVID-19, we also now manufacture and supply Blue-Zone Hand Sanitizers. Our Health Canada approved formulation – unscented, food grade, 70% Ethanol-based, non-residue, with Aloe Vera – is manufactured at our Health Canada approved GMP-compliant facility in Toronto. Pricing is quantity dependent.

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June 11, 2019
Blue-Zone featured on CBC television [CLICK HERE]
Blue-Zone is featured on the CBC News television program "The National". [Click title to view news report]

June 20, 2017
Sheridan College visits Blue-Zone Technologies
Blue-Zone was honored to welcome Sheridan College’s Faculty of Applied Science & Technology for a site tour on June 19. The students learned about Blue-Zone’s patented processes to Prevent the Vent ® and recycle anesthetic waste from medical facilities, while dazzling us with an array of astute observations and insightful questions. We look forward to all the projects they will soon undertake as they embark on their successful careers as Sheridan graduates.

Thank you to Professors Pauline Dykes, Daniel Liao and Terry Davison for coordinating this visit, and to all the students for your interest in Blue-Zone’s unique technology. See you soon and best of luck!


December 07, 2016
Mentor Works Features Blue-Zone: "Canadian Patent Awarded for MedTech Research and Development"

From Mentor Works webpage:

Every day, Canadian hospitals create environmental and health and safety hazards by expelling destructive greenhouse gases (GHGs) into the atmosphere. Surgical operations requiring the use of halogenated anaesthetic drugs release alarmingly high amounts of carbon dioxide emissions. With approximately 54,000 operating facilities in Canada, GHGs produced could soon exceed amounts comparable to two million vehicles.

To combat this worsening trend, Blue-Zone Technologies Ltd. has developed a unique solution that allows the capture, storage, and reprocessing of aggressive toxic gases from one central location in the hospital. Blue-Zone currently services approximately 25% of hospitals within Ontario, however the previous technology required one unit per operating room, whereas the new technology requires less space and staff involvement.

On October 25, 2016, the company was awarded a Canadian patent to protect their product and ensure its continued development. The use of anaesthetic gases is expected to increase globally by 10% to 15% per year; Blue-Zone’s patented technology will ensure these gasses do not reach Canada’s atmosphere."

Blue-Zone’s Innovative MedTech Research Led to Centralsorb®

Multi-award winning company, Blue-Zone Technologies Ltd., has created some of the world’s most innovative medical technology (medtech) innovations. The Ontario, Canada-based business is known for its Centralsorb® and Deltasorb® systems that remove and store GHG emissions from medical buildings.

Years ago, Blue-Zone began implementing Deltasorb® technologies in hospital operating rooms to remove anaesthetic gases, but this required several units and training for all medical professionals who needed to use it. Alternately, the company’s new Centralsorb® system is a centrally-located device within medical offices. The single unit only requires one operator, greatly reducing the space and time required for the technology to operate efficiently.

Once stored, Blue-Zone’s technology can liquefy anaesthetic gases and recycle them into gasses that can be used again."

Canadian Research Grants Helped Technology Development

Based on the global rise of greenhouse gas emissions, Blue-Zone is well positioned to grow beyond Canada. The firm’s commitment to research and development has provided an undeniable market advantage, and was made possible through Canadian government grants.

Blue-Zone used Canadian research grants such as the Sustainable Development Technology Canada (SDTC), and the Innovation Demonstration Fund (IDF) to accelerate development and bring their technology to market faster...

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November 07, 2016
Blue-Zone Technologies Granted Canadian Patent for Central Collection of Anesthetic Gases, Securing their Leading Position in the Sector [CLICK HERE]

CONCORD, ON, Nov. 7, 2016 /CNW/ - Blue-Zone Technologies Ltd. ("Blue-Zone"), a multi-award-winning cleantech company, is pleased to announce the grant of an additional patent in Canada: Canadian Patent No. 2,772,776, granted October 25, 2016, Adsorbent and Systems and Methods for Recovery of Halogenated Hydrocarbons, with a 2009 priority date. This relates to Blue-Zone's Centralsorb® Anesthetic Recovery System, which enables recovery of waste anesthetic gases from a central location in a hospital. Earlier this year Blue-Zone announced a similar patent had been granted to it in the United States.

"Our technology enjoys a global profile, and the awarding of this patent reinforces Blue-Zone's position of worldwide leadership in the halogenated anesthetic gas collection, reclamation, and production sectors. As we are a Canadian company, the Canadian patent grant is extra special for us," says Dusanka Filipovic, P.Eng., co-inventor of Centralsorb®, and Founder, Vice Chair and President of the company. "Blue-Zone's patented technologies are a Cradle-to-Cradle® solution to a global problem, and align with today's international mandate by reducing a hospital's carbon footprint, protecting public health, and building valuable anesthetic production capacity, which is beneficial for the environment and mankind..."

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March 17, 2016
WCG's FDAnews reports on Blue-Zone: "Blue-Zone Lands Additional U.S. Patent for Central Collection of Anesthetic Gas"

Excerpt from FDAnews website:

The USPTO has granted Blue-Zone Technologies an additional patent for its Centralsorb Anesthetic Recovery System, which recovers anesthetic gas waste from a hospital's central location.

Comparable to Blue-Zone’s patented Deltasorb — which performs the same task in operating rooms — Centralsorb focuses on centralized locations.

Positive efficacy results were observed during testing at Sunnybrook Health Sciences Centre and the Cleveland Clinic Foundation in 2010...

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March 14, 2016
Blue-Zone Technologies Awarded Additional US Patent for Central Collection of Anesthetic Gas, Securing Their Leading Position in the Sector [CLICK HERE]
Blue-Zone Technologies Awarded Additional US Patent for Central Collection of Anesthetic Gas, Securing Their Leading Position in the Sector

CONCORD, On. – March 14, 2016: Blue-Zone Technologies Ltd., a multi-award-winning cleantech company, is pleased to announce the allowance of an additional patent in the United States (related to US Patent Application No. 14/717,217). This patent allowance, with a 2009 priority date, relates to Blue-Zone’s Centralsorb® Anesthetic Recovery System, which enables recovery of waste anesthetic gases from a central location in a hospital.

During a typical surgery, 95% of the halogenated anesthetic drugs used are vented into the atmosphere. These anesthetics are very aggressive greenhouse gases. In North America, there are approximately 54,000 operating rooms, and annually those rooms can release the CO2 equivalent to well over two million cars. These toxic gases are stable, seven times heavier than air, tend to linger and amass in the area around a hospital for decades, and are an officially recognized occupational health and safety hazard. The use of anesthetic gases is forecast to grow globally by 10% to 15% per year, providing Blue-Zone’s patented technology with a significant growth opportunity.

Centralsorb®, as with Blue-Zone’s other patented system, Deltasorb®, prevents the release of these greenhouse gases into the atmosphere and offers a significant value-add to merely collecting and stockpiling, and/or incinerating the waste. These captured anesthetics are subsequently extracted, liquefied and used as raw material in the production of new, validated generic anesthetics at Blue-Zone’s facility. This ability to reprocess the recovered halogenated anesthetics – which is unique to Blue-Zone and not provided by any other company, worldwide – offers additional economic and security of supply benefits for hospitals that use Blue-Zone’s patented technology...

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December 11, 2015
Ministry of the Environment and Climate Change Visits Blue-Zone Technologies
Blue-Zone President Dusanka Filipovic speaks with Parliamentary Assistant to MOECC Glenn Thibeault

On November 25 2015, Blue-Zone was honored to welcome MPP Glenn Thibeault (Parliamentary Assistant to the Minister of the Environment and Climate Change) to our production facility in Concord, Ontario. We always find it humbling to raise the profile of anesthetic pollution and the movement to Prevent the Vent® globally, born-and-bred right here in Ontario. We hope Minister Thibeault enjoyed learning about our process and all the hard work dedicated to pioneering this proudly Canadian solution, and would like to thank his entire team for their steadfast commitment to green programs and clean technologies.

October 05, 2015
Greening Anesthesia® For Over 15 Years: Deltasorb® and Centralsorb®

The Blue-Zone brochure has been updated to reflect all recent activity. Beware of false claims from elsewhere. Blue-Zone remains the only commercially viable solution in the world for true Halogenated Drug Recovery and Cradle-to-Cradle® Anesthetic Stewardship.

Along with all our partners over the past 15+ years, we are proud to be Greening Anesthesia® pioneers and excited to see our services finally gain widespread support.

Please click here to learn about the revolutionary Deltasorb® and Centralsorb® Anesthetic Collection Services, and to see how to get your hospital involved.

Thanks for Preventing the Vent®!

September 01, 2015
Blue-Zone Technologies at the 35th annual CHES conference in Ottawa
(L-R) Andrew Flanagan, Blue-Zone; Ron Durocher, CHES; Dusanka Filipovic, Blue-Zone

Blue-Zone Technologies recently attended the 35th annual Canadian Healthcare Engineering Society (CHES) conference in Ottawa.

It was another wonderful event to showcase our Deltasorb® and Centralsorb® halogenated drug recovery technologies for Facilities Managers, Engineers and their peers... (More)

July 20, 2014
Blue-Zone Technologies cuts anesthesia's climate toll : Corporate Knights

Operating rooms are sites of some of our most advanced health technologies, where bodies are healed and lives often saved. Yet for the climate, operating rooms are surprisingly unhealthful.

The culprit: gaseous anesthesia. When anesthetized, patients only absorb about 5 per cent of an administered dosage. The leftovers – roughly 95 per cent of the original volatile anesthetic – are routinely vented to the outside world where they act as greenhouse gases thousands of times more potent than carbon dioxide...

(Full article: Anesthesia is a medical miracle, but it’s costly and poses a surprising threat to the climate)

March 14, 2014
Canadian Minister of Labour & Thornhill MP Visit Blue-Zone Technologies
(L-R) The Hon. Dr. Kellie Leitch and the Hon. Peter Kent are introduced to the Deltasorb® Technology by Blue-Zone President Dusanka Filipovic

On Friday March 14, The Hon. Dr. Kellie Leitch PC MP O.Ont, FRCS (C), Minister of Labour & Minister of Status of Women, and Thornhill MP the Hon. Peter Kent visited Blue-Zone Technologies' offices in Concord, Ontario. A short question and answer period was followed by an extensive tour of the facility, along with plans to stay connected in the future.

Blue-Zone is humbled by the continued support of all dignitaries to educate the general public on the threat of anesthetic waste- and the outstanding work being done in hospitals across Canada to "Prevent the Vent!®" for once and for all.

We again thank the Ministers for taking time out of their hectic schedules to learn about the Deltasorb® Service and the only true Halogenated Anesthetic Drug Recovery technology in the world. We look forward to seeing you again!

October 03, 2013
Spacelabs Partners with Blue-Zone for Greener, Cleaner Anesthesia Delivery

Excerpt from Spacelabs press release:

SNOQUALMIE, WASH. - Spacelabs Healthcare announces a partnership with Blue-Zone Technologies, Ltd., a private Canadian company based outside Toronto, to offer Blue-Zone Technologies' Deltasorb® anesthetic collection service as a solution for hospitals to eliminate the release of harmful halogenated anesthetics, a significant class of pharmaceutical waste into the public environment.


"We recognize the impact anesthetic gases can have on the environment," said Nicholas Ong, President, Spacelabs Healthcare. "Spacelabs is committed to addressing these environmental pollutants by taking the Deltasorb® technology global."

August 23, 2013
Thornhill MP Visits Blue-Zone Technologies

On August 22 2013, Blue-Zone had the pleasure of hosting a visit from our local MP and former Minister of the Environment, the Hon. Peter Kent. A press release was issued at the link below. Blue-Zone is eager to soon "Prevent the Vent!®" of harmful anesthetic gases at all York Region Hospitals.

(See also: Hon. Peter Kent visits Blue-Zone Technologies)

March 25, 2013
SDTC Congratulates Govt of Canada on 2013 Budget Investment
OTTAWA, ONTARIO--(Marketwire - March 21, 2013) - Sustainable Development Technology Canada (SDTC) today congratulated the Government of Canada on the additional $325 million over eight years committed in Budget 2013 for investment in Canadian cleantech companies.

"The investment announced today will continue Canada's leadership in commercializing innovative clean technologies, supporting a thriving part of Canada's economy, a source of high-paying jobs and growth for Canadian companies and an important part of Canada's future prosperity," said Vicky Sharpe, President and CEO of SDTC. "This support will allow SDTC to continue putting innovation to work in a sector that could bring in as much as $62 billion and employ 126,000 by 2020."

October 24, 2012
"Capturing Greenhouse Inhalation Anesthetics for Better City Atmosphere"
by Dr. Deepak Gupta, Wayne State University

Exquisite phenomena related to inhalational anesthetics exposure had warranted the development of scavenging systems decades ago for clearing and maintaining the operating room air quality to avoid the health concerns for operating room personnel. However, there had been growing concerns [1-2] in relation to venting these untreated scavenged anesthetics out of the protected operating room to the innocent city atmosphere and subsequent potential (yet not completely studied) direct risks to city population’s health (dependent on the geometrically progressing incidences of the anesthetics-based medical procedures and subsequently increased but yet not quantified anesthetics concentrations in the city atmosphere) similar to occupational hazards of inhalational anesthetics [3-7] as well as indirect global climate changes secondary to greenhouse effects of these vented gases [1-2]. The only limitation to counter this known menace was the lag in evolving technology to capture and not helplessly venting these gases into city atmosphere...

To put up the anesthetics potential for global warming, it can be said that one average sized hospital annual anesthetic emissions are equivalent to pollution caused by 400 cars [1-2] and the answer to this major pollution is either planting approximately 125,000 trees per year, or using the Deltasorb® Anesthetic Collection Service or Anesthetic Gas Reclamation, LLC. Moreover, the rate at which anesthetics are being administered secondary to geometric progression of surgical interventions and understandable patients' fears of awareness and pain, the emissions will go up and beyond...

Gupta D. Capturing Greenhouse Inhalation Anesthetics for Better City Atmosphere . WebmedCentral ANAESTHESIA 2012;3(5):WMC003397

(Full article: Capturing Greenhouse Inhalation Anesthetics for Better City Atmosphere,, May 22 2012)

June 05, 2012
"The Green OR" by Emily Jackson, Toronto Star
Dr. Mike Chapman and Patient Care Director Nurallah Rahim in an Operating Room at The Scarborough Hospital. KEITH BEATY/TORONTO STAR

Nurallah Rahim rips the plastic off a pack of sponges in a vacant operating room at the Scarborough Hospital.

Even though he’s clad in scrubs and a hair net, and despite the extra layer of paper protecting the sterilized pads, these unused sponges — just because they have been opened — are contaminated and must be destroyed. Rahim, patient care director of the hospital’s surgical services, is demonstrating how easily waste accumulates as a result of efforts to keep operating theatres safe and clean.

After years of nurses’ frustration with having to deal with the mountains of surgical waste, his hospital and others in the GTA are discovering ways to reduce their environmental footprint.

And they’re finding that being green is often less expensive...

(Full article: The Green OR, Toronto Star, June 5 2012)

May 11, 2012
The Scarborough Hospital joins the Deltasorb® Program

Excerpt from article "Recycling Gas Will Reap Environmental Benefits":

Most people don’t realize it, but operating rooms are major greenhouse gas emitters. Anesthetic gas is a mix that effectively sedates patients for surgery, however only about five per cent of it actually gets absorbed by patients...

Dr. Carly Peterson, TSH Anesthesiologist, adjusts the Deltasorb® canister.
“This is an industry-wide problem,” says Kathy Bruce, Patient Care Manager, Operating Rooms (The Scarborough Hospital). “When we realized there was a way to prevent it from happening, and that we could do it with no impact to patient care, the answer was obvious. We had to do it.”

All of the operating rooms now have a Deltasorb® Inhalation Anesthetic Gas Recovery System developed by Blue Zone... Gas is captured in the canister, and then sent to Blue Zone for processing back into raw material to produce a new line of ‘green’ anesthetics.

“Now, instead of emitting all of that gas into the atmosphere, we can recycle it,” says Kathy. “It’s a win-win for the environment and the hospital.”

September 13, 2011
56th Annual Ontario Anesthesia Meeting: Thurs Sep 22 - Sun Sep 25 2011
Westin Habour Castle Hotel
Toronto ON

Blue-Zone will proudly be attending and once again hosting a booth at the upcoming Ontario Anesthesia Meeting in Toronto, ON. Come say hi and learn about all the exciting developments over the past 12 months in the field of Greening Anesthesia® and halogenated waste recovery. We will also be running a promo for new joiners- valid only for this weekend- so don't miss it!

May 16, 2011
Greening Health Care Sustainability Forum: Fri May 13 2011
Hosted by Toronto & Region Conservation Authority
Black Creek Pioneer Village
North York ON

Blue-Zone participated in the Greening Health Care Sustainability Forum on May 13 2011, hosted by the Toronto & Region Conversation Authority (TRCA) at Black Creek Pioneer Village. This annual event brings together 21 member hospitals of the TRCA's Greening Health Care Initiative who are as committed to raising their environmental performance as they are ensuring the health and well-being of their respective communities. The Forum was a resounding success as Blue-Zone continues to "Green Anesthesia" and promote its sustainable solution to “Prevent the Vent!®" of toxic anesthetic gases into the atmosphere.

March 31, 2011
SDTC Celebrates Blue-Zone: "Pulling Huge Benefits out of Thin Air"

Excerpt from SDTC article:

Blue-Zone Technologies, an SDTC-funded company, has developed a technology which improves efficiency of the use of expensive medical chemicals by 10 to 20 times, slashing costs for hospitals, university medical centres and municipalities...

March 22, 2011
The Kingston Whig-Standard features Blue-Zone technology

Excerpt from the Kingston Whig-Standard article "Kingston General Hospital is Greening Anesthesia":

Eight years ago, Doug Bodie, an anesthesia assistant at Kings­ton General Hospital, made a surprising discovery.

He was asked to take part in a trial of a filtration system that would trap expelled anesthetic gases, gases that have been proven to be environmentally unfriendly.

"I wasn't aware of the environmental issues, because green wasn't in back then," Bodie said.

Only about 5% of the anesthesia patients are given during surgery is metabolized, Bodie learned. The remaining 95% is vented through the hospital's stack and into the atmosphere.
Despite not knowing about the environmental concerns the untreated gases were creating, Bodie said, "it's just good to know that this is a 100% green project.

"You're starting with the drug, and, at the end of the day, you will end up with the same drug," Bodie said. "We're not polluting the environment, and it's good for everybody."

March 01, 2011
Blue-Zone Video Profile now seen on YouTube
"Blue-Zone Technologies Ltd. of Concord, Ontario, Canada is very pleased to release its first video featuring the Deltasorb® anesthetic gas recycling service, sharing the testimonials of leading doctors and cutting-edge environmental executives who have adopted the technology at major hospitals in Southern Ontario..."

Full-length video can be viewed here: YouTube Video

December 17, 2010
Ontario Ministry of Research & Innovation visits Blue-Zone
On December 16 2010, dignitary Reza Moridi, M.P.P., Parliamentary Assistant to the Minister of Research and Innovation, toured Blue-Zone’s showcase Deltasorb® Anesthetic Collection Facility and pilot scale inhalation anesthetics production plant.

November 16, 2010
Friends of Blue-Zone Appreciation Night
On November 16 2010, Blue-Zone hosted a "Friends of Blue-Zone Appreciation Night" at the McLean House, Estates of Sunnybrook in Toronto. Hospital partners from across Ontario were honored for their longstanding support of the Deltasorb® program and their visionary commitment to Greening Anesthesia®.

November 12, 2010
Deltasorb® Anesthetic Collection Service Launches New Website
Blue-Zone Technologies is pleased to announce the launch of its new Deltasorb® Anesthetic Collection Service website. The website is a resource for hospitals and concerned citizens to learn about the impact of venting toxic anesthetic gases into the atmosphere and to learn about what more can be done to prevent it. We invite you to explore the website and to contact us with any questions.

March 23, 2009
Globe and Mail national newspaper features Blue-Zone: "A remedy for the operating room"

Excerpt from article:

When Dusanka Filipovic formed Blue-Zone Technologies in 1999, she knew its unique clean technology could capture the attention of global markets.

Ontario's hospitals spend $20-million a year on the chemicals that induce anesthesia during operations, only to vent 95 per cent of them into the atmosphere. Blue-Zone says these greenhouse gas emissions equal the annual exhaust output of 30,000 cars.

The Concord, Ont., company captures the gas not used by the patient in special canisters and recycles it so it can be sold back to hospitals, at reduced cost, in its pure liquid form. This lowers expenses for hospitals and keeps anesthetic chemicals and greenhouse gases out of the air.

"From the beginning, it was very clear it would more than just benefit the company - it would benefit the entire world," says Ms. Filipovic, the company's president and chief executive officer.

For full Globe and Mail article : "A remedy for the operating room".


Dr. Gerry O'Leary, MB, FRCPC "We are pleased to collaborate with Blue-Zone, not only because the technology is innovative but also because it can extend the useful life cycle of a...
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Blue-Zone Story

Deltasorb® Anesthetic Collection Service Launches New Website

Blue-Zone Technologies is pleased to announce the launch of its new Deltasorb® Anesthetic Collection Service website. The website is a resource...


25) What happens when the canister is full, and not removed from the exhaust line?

The adsorbent in the canister is capable of capturing the three main inhalation anesthetics in use today - Desflurane, Sevoflurane and Isoflurane - up...

Contact Info

14-84 Citation Drive Concord (Toronto), ON Canada L4K 3C1
Tel: (905) 761-1224 Fax: (905) 761-3371

Articles of Interest

  • Blue Zone

    Blue-Zone Receives Drug Approval From Health Canada for Its Branded Generic Desflurane, USP.

    Blue-Zone prepares for local production and commercial launch of Desflurane, safeguarding access to this critical drug for all Canadians and providing significant cost savings to hospitals. ...

  • Blue Zone

    The Anesthetic Gasses Hurting the Environment From Operating Rooms

    Blue-Zone is featured on CBC television program "The National"....

  • Blue Zone

    Green Solutions - A Greener Way to Get Anesthetized

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