Qubit Systems Inc.

Qubit Systems Inc. Manufactures and sells instrumentation for industry, research and teaching in all biological and environmental sciences, including plant phenotyping

Leaf senescence, the controlled breakdown of chlorophyll, the resorption of nitrogen, and the systematic dismantling of ...
10/06/2026

Leaf senescence, the controlled breakdown of chlorophyll, the resorption of nitrogen, and the systematic dismantling of photosynthetic machinery in preparation for winter, is one of the more elegant examples of regulated physiology in the plant kingdom. The yellowing of leaves is not decay but a precisely orchestrated withdrawal of resources that the plant will reuse in spring.

For researchers studying senescence, the transition from photosynthetically active to senescing tissue is detectable by measuring chlorophyll fluorescence parameters well before any visible colour change occurs. Fv/Fm declines. Quenching patterns shift. The onset and progression of senescence can be monitored noninvasively day by day.

Our inexpensive, handheld Z991 FluorPen is the perfect tool for researchers interested in tracking senescence, stress responses, and seasonal photosynthetic dynamics.

If you'd like to know more about how chlorophyll fluorescence measurements may enhance your research, we'd be glad to talk.

https://qubitsystems.com/products/z991-fluorpen/

Autumn is an instructive time to be measuring soil respiration.As temperatures drop and leaf litter begins to accumulate...
10/01/2026

Autumn is an instructive time to be measuring soil respiration.

As temperatures drop and leaf litter begins to accumulate, the microbial community in the soil undergoes a transition that is reflected in CO2 flux rates. The breakdown of fresh organic matter, such as leaves, root exudates, and crop residues, temporarily increases microbial activity and CO2 release even as photosynthesis above ground is winding down. The net carbon balance of the soil shifts in ways of interest to researchers modelling seasonal carbon dynamics.

For anyone tracking soil carbon flux across seasons, October measurements are some of the most interesting of the year. The system is not at equilibrium. It is responding to change, and the instrumentation needs to be sensitive enough to capture dynamics accurately.

Our Q-Box SR1D Soil Respiration Package measures CO2 flux in situ, with a soil chamber placed directly over the ground surface. It can also be used in the lab with samples incubated in chambers for flow-through measurements of gas exchange.

If you are a soil scientist working on carbon dynamics and want to talk through your measurement setup, we'd be glad to help.

https://qubitsystems.com/products/q-box-sr1lp-soil-respiration/

10/01/2026

🧡 A little girl, a new orange shirt, and the day it was taken from her

In 1973, six-year-old Phyllis Webstad was getting ready for her very first day of school.

She lived with her grandmother on the Dog Creek reserve in British Columbia. Her family didn't have much, but her grandmother took her to town to buy a new outfit for the big day. Phyllis chose a bright, shiny orange shirt with string laced up the front. She loved it. She couldn't wait to wear it.

She was going to St. Joseph Mission, a residential school near Williams Lake, BC.

When she arrived, her clothes were taken away. Including the orange shirt.

She never wore it again.

It may sound like a small thing. But for Phyllis, that shirt came to stand for something much bigger: the feeling that her feelings didn't matter, and that no one cared. It was a feeling shared by thousands of Indigenous children who were separated from their families, their language and their culture.

And Phyllis wasn't the first in her family to go through it. She was the third generation to attend the same residential school, after her grandmother and her mother.

📜 How one story became a national day

In 2013, Phyllis shared her story publicly for the first time at the St. Joseph Mission Residential School Commemoration Project and Reunion in Williams Lake. Her story spread quickly, and Orange Shirt Day was born.

September 30 was chosen for a reason: it's the time of year when Indigenous children were historically taken from their homes and sent to residential schools.

What began as one woman's memory spread across the country. Schools, workplaces and communities started wearing orange every September 30, under one simple message:

🧡 Every Child Matters.

In 2021, the Government of Canada made September 30 the National Day for Truth and Reconciliation, a federal statutory day that answers Call to Action 80 of the Truth and Reconciliation Commission.

📌 Did you know?
• There were 140 federally run residential schools in Canada, operating between 1867 and 1996.
• Many children who were taken to these schools never returned home.
• Phyllis has written several children's books about her experience, including The Orange Shirt Story, and leads the Orange Shirt Society to keep the story alive.

Today, the Peace Tower in Ottawa is lit in orange, and Canadians across the country wear orange to honour residential school survivors, their families, and the children who never came home.

It all started with one little girl and one orange shirt.🧡

Entering the teaching lab for the first time can be both daunting and exciting for biology students. Qubit Systems origi...
09/24/2026

Entering the teaching lab for the first time can be both daunting and exciting for biology students. Qubit Systems origin was in the design of affordable teaching systems for undergraduate biology laboratories, and education remains an important part of what we do today. We reduce the daunting aspects of laboratory teaching and emphasise the excitement.

Little can be learned by a group of students watching a piece of expensive research equipment churn out numbers and generate graphs; students need to know what the equipment is doing and how it is doing it. Qubit’s modular Q-teach packages for monitoring photosynthesis, human metabolism, nitrogen fixation, aquatic biology, and animal and insect respirometry are designed to put students in the driving seat, conducting experiments fully detailed in Qubit’s teaching manuals. After that, they may developing and testing their own hypotheses.

If you are a researcher tasked with developing new teaching labs for your biology courses while weighted down with the stress of publish or perish, Qubit can relieve the strain. If you are an educator frustrated by the lack of affordable laboratory equipment for conducting teaching experiments in the way that biology researchers go about their business, our Q-teach packages are exactly what you need. Designed to be used for groups of 2 – 4 students, the teaching lab becomes a collaborative environment of shared ideas as our intuitive software reveals the workings of physiological processes under various conditions.

Please contact us if you’d like us to help you with your labs; our staff has decades of teaching experience at the university level.

https://qubitsystems.com/products/q-teach-packages/

Qubit Systems is proud to be working with researchers at the University of Guelph in Ontario, Canada to provide a multi-...
09/21/2026

Qubit Systems is proud to be working with researchers at the University of Guelph in Ontario, Canada to provide a multi-channel gas exchange system for monitoring emissions from large, domesticated animals (predominantly pigs), in a new barn facility. Principal Investigator, Dr. Lee-Anne Huber in the Department of Animal Sciences, with funding from the Canadian Foundation for Innovation, will be studying pig respirometry using Qubit’s O2 and CO2 analysers, as well as emissions of methane, nitrous oxide and ammonia using Qubit’s new line of Laser Gas Detection analysers.

Lee-Anne's research involves practical feeding recommendations for swine and she has developed precision feeding programs for gestating and lactating sows that closely match estimated nutrient and energy requirements and improve sow productivity. She has also generated feeding recommendations for late-gestating sows aimed at maximizing mammary development and milk production in the subsequent lactation period, which have been implemented on commercial farms in Canada and the United States.

Qubit has a long association with the University of Guelph, Canada’s most prestigious institution for domesticated animal studies and veterinary research and we look forward to continued collaboration.

Learn more about Qubit Systems at www.qubitsystems.com

Drosophila melanogaster, the ubiquitous fruit fly, with its well-defined genome and  numerous genetic variants, is a mod...
09/17/2026

Drosophila melanogaster, the ubiquitous fruit fly, with its well-defined genome and numerous genetic variants, is a model organism in insect metabolic metabolic studies, researchers often knocking on Qubit’s door for appropriate respirometry technology.

OK, measuring CO2 evolution rate (VCO2) can be challenging with something so small, but when you wish to measure O2 uptake rate (VO2) at the same time, things become trickier by orders of magnitude. At least they did until Qubit developed and patented the world’s first differential O2 analyser with a resolution of 1 ppm O2 against air. (One other person claims this distinction, but our irrefutable claim is well documented in the literature and US Patent Office).

The S104 DOX has a resolution similar to our low range CO2 analysers and can be used in conjunction with these to monitor respiratory exchange ratio (RER = VO2/VCO2) in a range of organisms, large and small, using open-flow and stop-flow respirometry, respectively.

If you're research involves the measurement of insect metabolic rate, we'd be glad to hear from you.

Learn more at https://qubitsystems.com/products/respirometry/insect/

Laboratory-based CPX tests are useful, there’s no doubt about that, but by definition they are conducted on an ergometer...
09/14/2026

Laboratory-based CPX tests are useful, there’s no doubt about that, but by definition they are conducted on an ergometer.. In a laboratory. Which is not where the athlete performs.

For sports scientists working with athletes who conduct their real business on a track, a pitch, a court, or a mountain, the translation from ergometer data to real-world performance involves a degree of assumption. The athlete on an ergometer does not represent the athlete in competition -- movement patterns differ, environmental conditions differ, and psychological context differs considerably.

VOCO removes the ergometer from the equation. Wearable, breath-by-breath measurement of VO2, VCO2, RER, breathing frequency, breath volume, and heart rate during any activity, in any environment. The athlete performs. The data indicate the metabolic and physiological effects.

Wasserman 9-panel plots are generated automatically. All raw data are available for downstream analysis. If you're working in sports science and the gap between lab data and field performance is something that concerns you, we'd enjoy the conversation.

www.voco-cpx.com.

Using Qubit’s S157 field-portable NDIR CO2 analyser and associated software and equipment for monitoring insect respirom...
09/10/2026

Using Qubit’s S157 field-portable NDIR CO2 analyser and associated software and equipment for monitoring insect respirometry, Jessica Ortiz-Pacheco of the Andes Amazon Fund in Washington, together with colleagues from Canada, Columbia and Peru, has just published a paper in Insect Conservation and Diversity titled Extreme habitat specialization by the Amazonian dung beetle Canthonidia rubromaculata (https://doi.org/10.1111/icad.70115)

This rare creature has extremely restricted distribution Bolivia, Venezuela, Brazil and Peru, living in open microhabitats with high temperatures and intense solar radiation. It is threatened by climate change and the expansion of gold mining. The research team recorded a mean stress heat threshold (SHST) of 31.75°C (±3.39) and a critical thermal maximum (CTmax) of 45.46°C (±3.53), with clear transitions between basal respiration thermal stress and physiological failure. The data suggest a reduced capacity to tolerate future thermal increases and a warning concerning species survival under ongoing environmental warming and the accelerated degradation of Amazonian riverine habitats.

We thank the researchers for using Qubit equipment in this study and for pointing out one more organism threatened with climate-based extinction.

On a trip to Delhi, I walked from the airport into what felt like the outer edge of a raging forest fire; sweltering hea...
09/07/2026

On a trip to Delhi, I walked from the airport into what felt like the outer edge of a raging forest fire; sweltering heat and a miasma of fine particulate matter. According to a study from the Washington Post, breathing Delhi’s air is equivalent to smoking nine ci******es a day. As for blue skies, none were in evidence.

However, components of the air we can’t see are problematic too. Increasing levels of carbon dioxide, nitrous oxide and methane have been linked to climate change and the occurrence of extreme weather events and periods of drought that have created tinder box conditions in forests throughout Canada, the USA and Europe. Over the past summer, the smoke-laden air throughout these regions has been little better than that in Delhi.

Monitoring atmospheric gases is essential to the task of maintaining clean air and blue skies, which is where Qubit can help with its range of Laser Gas Detection devices for measuring CO2, CH4, N2O, H2O and NH3 in the atmosphere. If you’d like to learn more about our gas measurement technologies, give us a call.

Learn more about Qubit Systems at https://qubitsystems.com

To measure a living system, you must interact with it. To interact with it is, to some degree, to change it. An animal p...
09/03/2026

To measure a living system, you must interact with it. To interact with it is, to some degree, to change it. An animal placed in a respirometry chamber responds to the chamber. A plant in a cuvette responds to the cuvette. Except in barbaric situations a human on a treadmill is not doing what humans would normally do.

Experimental biologists have developed elegant strategies for minimising this problem -- intermittent flow respirometry to reduce handling stress, field-deployable instruments to avoid laboratory confinement, wearable respirometry devices to allow unrestricted movement, in situ measurement systems to study organisms in their actual environments, and human metabolic chambers that allow subjects to carry out their daily activities. Each approach addresses a similar underlying question: how to minimise the effect of measurement techniques on the processes we wish to measure.

At Qubit, this question has shaped our instruments and experimental designs for 30 years. If you are faced with this question in your research, give us a call.

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1573 John Counter Boulevard
Kingston, ON
K7M3L5

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