Frequently Asked Questions

Shipping

 

Q: When will my order ship?

A: We are working hard to get orders fulfilled as soon as we can! Due to the COVID-19 outbreak, our inventory has been quickly depleted. Fulfilments will occur on a first-come-first-serve basis. Unfortunately, we cannot provide definitive delivery dates until an order has successfully shipped and we receive a tracking number. All purchases will now be final sale and will not be subjected to cancellation or refunds. This will help expedite our order fulfilment process and ensure that our customers receive their purchases as quickly as possible.

 

Q: Do you ship to Hong Kong?

A: Hong Kong orders are shipping now and we aim to continue to fulfill new orders as fast as possible. However, due to ongoing shipping delays beyond our control we cannot and expressly do not guarantee any specific delivery date into Hong Kong at this time. You will receive a tracking number once your order has shipped. Place your order now to be among the first in queue. Thank you for your patience.

 

Q: How long is the current queue for orders?

 A: Unfortunately we do not have a specific date for orders to be fulfilled. This is subject to change and we will provide updates as more information becomes available.  Please check our shipping updates for the most current information.

 

Q: How Can I Get a Pouch or Magnetic Clip?

 A: Due to global supply issues, we are temporarily discontinuing the O2 Travel Pouch and Magnetic Clip. This decision helps us deliver our masks to those in need as soon as possible. These products will rejoin our product line in the future.

 

Q: How much is shipping?

 A: Shipping rates are typically $10.00 USD.

 

Q: Who is your shipping carrier in Hong Kong?

 A: We typically ship with SF Express in Hong Kong.

 

O2 Curve & COVID-19

Q: What Is The Difference Between a Respirator and a Mask?

A: Respirators protect the wearer from exposure to airborne particles, and in healthcare, protect from exposure to biological aerosols including viruses and bacteria. Surgical masks are a barrier to splashes, droplets, and biological fluids, and were designed to protect patients from the droplets of health care workers. Respirators are designed to seal tight to the face of the wearer. O2 Canada makes respirators, and currently have no plans to manufacture masks, except for use with our respirator products for health care workers.

Q: What is NIOSH?

A: The National Institute for Occupational Safety and Health (NIOSH) is a branch of the United States Centers for Disease Control and Prevention (CDC), responsible for setting industry standards to prevent workplace injury. The Canadian Centre for Occupational Health and Safety (CCOHS) performs a similar role in Canada, and generally uses the US standards at present.

Q: What is an N95 respirator?

A: Respirators remove air contaminants and consist of the designations “N”, “R”, and “P”, which indicate “not resistant to oil”, “resistant to oil”, and “oil proof” respectively. The number indicates the filtration efficiency, and a rating of “95” indicates filtration of at least 95% of particles, “99” indicates filtration of at least 99% of particles, and “100” indicates filtration of at least 99.97% of particles. In testing, the most penetrating particle size is in the 0.3 µm range. N95 respirators (or particulate filtering face-piece respirators) are classified as Class I medical devices in Canada, and Class II medical devices in the United States.

Q: Does O2 Canada have a Medical Device Establishment Licence (MDEL)?

A: Yes, O2 Canada is an approved Class I Health Canada medical device manufacturer. Our Medical Device Establishment Licence (MDEL) registration is 10455.

Q: Is the O2 Curve NIOSH N95 certified?

A: Not presently, since the O2 Curve was initially designed for use in air pollution. However, our filter media used in the O2 Curve is capable of filtering ultra-fine particulates at greater than 95% efficiency. As a result of the COVID-19 pandemic, we are conducting research to determine the compatibility of the O2 Curve with the NIOSH N95 standard. Due to the compact design of the O2 Curve, it may not be compatible with the standard NIOSH N95 testing procedures, and we are actively investigating how to test the O2 Curve under these conditions. The research we have to date is described below, and we will be continually updating and sharing our research as it becomes available.

Q: Has the O2 Curve ever been compared to an N95 respirator?

A: Yes, the University of Waterloo Green Energy and Pollution Control Research Laboratory tested the O2 Curve against other commercially available respirators, with particles ranging from 0.5 µm to 4.7 µm. The O2 Curve outperformed all other respirators tested, including the 3M N95 respirator. However this study did not specifically include particles 0.3 µm in size.

Q: What type of filter does the O2 Curve use?

A: The O2 Curve uses a Technostat® T150 filter, a triboelectric charged filtration system. The filter works both mechanically and electrostatically. Articles that are too small to be filtered physically are attracted to the charged filter, for improved filter efficiency and performance. The Technostat® T150 filters are rated to filter 99% efficiency down to 0.1 µm, and independent lab testing confirmed filter efficiency of greater than 99% with particle sizes from 0.3 to 0.5 µm.

Q: Is the O2 Curve filter effective at removing viruses and bacteria?

A: Many viruses and bacteria are smaller than what any filter can remove. However, viruses do not typically float in the air on their own and are instead are transported via droplets from sneezing and coughing. These droplets have a wide range in size, but are typically larger. Independent lab testing showed the O2 Curve Technostat® T150 filter had a virus filtration efficiency of 99.998%, with a mean particle size of 2.7 µm, and used a 31 nm (0.03 µm) virus. SARS-COV2, the virus responsible for COVID-19, is estimated to be 120 nm (0.12 µm) in size.

Q: What types of mask fit testing are available?


A: Mask fit testing consists of “qualitative” and “quantitative” testing. Qualitative testing consists of exposing an individual to known detectable chemicals, to determine if the wearer is able to detect those same chemicals while wearing a respirator. Quantitative testing consists of measuring the number of airborne particles on either side of a respirator. Both are tested while wearing a respirator under a series of simulated working conditions.


Q: Can the O2 Curve be mask fit tested?

A: Yes. Every O2 Curve can be fit tested to an individual user, in the same way that a disposable N95 respirator can. Qualitative testing can be done without any modifications, and for quantitative testing we have developed a shell and filter adaptor that allows individuals to be tested without damaging to their own O2 Curve.

Q: How well does the O2 Curve compare in terms of fit testing?


A: The purpose of the mask fit test is to provide an individualized result for a specific wearer. Therefore, not every respirator will fit every face. However, the O2 Curve has consistently passed both qualitative and quantitative mask fit testing. Using the TSI PortaCount® 8038 QNFT protocol, the O2 Curve has repeatedly passed with a score of 200+ out of a highest possible score of 200.

Q: How effective are the one way exhalation valves?

A: Independent lab testing demonstrated the earlier O2 Curve exhalation valves met the N95 standard, however we felt the variances were too high, and retooled the valves for improved performance, and are currently being retested. We have also designed a device to allow users the option of closing off the valves, if desired, which will be available soon.

Q: Can positive and negative pressure seal tests be performed?

A: We have designed adaptors and protocols to ensure every user can test both mask fit and valve seal every single time they put their O2 Curve respirator on. These will be available soon.


Q: What about cross contamination between patients?

A: We developed an adaptor to allow placement of a disposable surgical mask over the O2 Curve, to minimize cross contamination. When going from “dirty” to “clean” clinical areas, between clients, or if the disposable mask becomes soiled, it can be replaced, and the O2 Curve’s outer shell can also be wiped down with commercially available disinfection wipes, such as Oxivir® Tb or CaviWipes™, to minimize exposure to the wearer, their co-workers, and their clients.

Q: Which way do I insert the filter?

A: The O2 Curve filters come in a plastic envelope. The side of the filter facing the clear film of the envelope is upstream of the airflow, meaning the side that can be seen through the clear film is the side that should face out and away from the user’s face.

Q: How often should I replace the O2 Curve’s filter?

A: How often you should replace your filter depends on usage and the environment it’s used in. For general use, such as pollution filtration, the filter should last 1 to 2 weeks. In very dusty environments, you may need to switch the filter more often.

Health measures that work for some people may not necessarily work for others. Different people have different levels of sensitivity, and as such, may require different types of masks to protect against the same type and concentration of substance. A mask improperly used may do little to protect you from any offending substance and may even worsen your exposure in some cases.

Q: How long can the filters be used for?

A: The O2 Curve Technostat® T150 had previously been recommended to be changed after fourteen (14) days with typical use. However, in clinical care settings, we are recommending the filters be changed daily, or if the filter is otherwise compromised. We are currently studying extended filter use beyond these recommendations. When protecting against viruses, the filter should be disposed of each time the mask is used. It is also recommended that the mask be sanitized between uses.

Q: Can the filters be sanitized and reused?

A: Due to the severity and risks of COVID-19, we are recommending that filters be used once and disposed of appropriately. Until we have established a safe and effective sanitation process, we are recommending single use as best practice. However, we are currently studying sterilization methods and protocols for our Technostat® T150 filters, to determine how the filters can be reused safely, and how many times this can be done before losing filter efficiency.

Q: Can the O2 Curve be sanitized?


A: Yes. The O2 Curve can be sanitized through routine disinfection protocols. The O2 Curve has been tested through several autoclave protocols, including the Steris AMSCO® 5052, the SciCan Bravo™ V21, and the SciCan STATIM® 5000 G4, as well as commercially available microwave steam sterilization protocols, which did not result in any appreciable effect on the material integrity of respirator components. The O2 Curve also did not demonstrate any appreciable material defects when cleaned with commercially available disinfection wipes, such as Oxivir® Tb or CaviWipes™. We are currently conducting further research into these protocols, as well as studying additional sanitation protocols, such as vapourized hydrogen peroxide, and supercritical carbon dioxide, to ensure that these meet, or exceed, standard hospital disinfection protocols in use today.

Q: Will the O2 Curve help protect me against COVID-19?

A: Most masks do not filter particles of the size of the COVID-19 virus, and if they do not seal well to your face, they will allow virus particles to pass around the filter.

The O2 Curve’s medical-grade silicone provides a better seal and our filter material is highly efficient at removing harmful particulate matter. The mask is submersible and can withstand numerous disinfection techniques. We recommend that it is best practice to discard the O2 Curve filter and sanitize the entire mask after each use.

Wearing a mask is not sufficient to protect you from infection. Depending on your environment, a respirator is just one of many practices that will protect against infection. Most important to all of them, is that washing your hands frequently, avoid touching your eyes, nose and mouth, as well as avoiding close contact with others are recommended.

No mask is capable of protecting you 100% against any other dangerous substance or virus.  In particular, COVID-19 is a new virus that is not yet fully understood. We cannot, and we expressly do not, guarantee that our masks will protect you against COVID-19. However, if used appropriately in conjunction with other public health hygiene recommendations, it may substantially reduce your risk of receiving or transmitting the disease.

Information For Health Professionals

Studies and Tests

 

Disclaimer

No mask is capable of protecting you 100% against any other dangerous substance or virus. In particular, COVID-19 is a new virus that is not yet fully understood. We cannot and we expressly do not claim that our masks will guarantee protection against COVID-19, and we expressly disclaim any liability of any nature if anyone making us of our products contracts COVID-19 or any other virus or medical condition.

Health measures that work for some people may not necessarily work for others. Different people have different levels of sensitivity, and as such, may require different types of masks to protect against the same type and concentration of substance. A mask improperly used may do little to protect you from any offending substance and may even worsen your exposure in some cases.

Please consult your doctor when deciding whether and how to incorporate an O2 mask into your health-care routine. Please ensure you always read and follow labels, warnings and directions before using a mask, including, without limitation, cleaning instructions, suggested timelines for disposal and filter change, etc. Content on this site is for reference purposes only and is not intended to substitute for advice given by a physician or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect you have a medical problem.

Nothing on this website should be taken to constitute professional advice or a formal recommendation and we exclude all representations and warranties relating to the use of our products. In no event will O2 be liable for any incidental, indirectly, consequential or special damages of any kind, or any damages whatsoever, including, without limitation, those resulting from the infection of COVID-19 or any other offending substance arising out of or in connection with the use of our products.

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