low-flo anesthesia SomnoFlo

SomnoFlo®: the low-flow anesthesia system built for small animal patients

Traditional vaporizers were not designed for mice and rats.

SomnoFlo is the purpose-built, low-flow anesthesia system that helps you reduce anesthetic waste, support animal welfare, and simplify small animal anesthesia workflows.

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What you get

SomnoFlo® low-flow anesthesia system

SomnoFlo is a low-flow electronic vaporizer that draws directly from the bottle. 

Its compact design takes up little counter space and is capable of producing carrier gas rates as low as 50 mL/min. 

A built in air compressor allows for delivery of vaporized anesthetic using room air, or attach the SomnoFlo to a source of compressed gas. The choice is yours.

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Is designed specifically for mice, rats, and other small or exotic animals

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Supports 3Rs animal welfare goals

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Helps substantially reduce isoflurane waste

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Is built for practical lab workflows

Traditional vaporizers weren't made for tiny patients

For small animal anesthesia, “good enough” equipment can create real tradeoffs.

Higher flow, more waste, less precision, and more workflow friction all add up—especially when you’re trying to protect animal welfare and stretch a tight budget.

  • Too much gas: traditional setups can push more anesthetic and carrier gas than small patients really need.
  • Too much waste: excess isoflurane use adds cost fast, especially across repeated procedures.
  • Too much friction: bulky, inconsistent, or overcomplicated workflows slow teams down and introduce variability.
SomnoFlo is the low-flow anesthesia vaporizer for small animals, mice, rodents, rats, and exotic animals

The low-flow anesthesia system designed for small animals

SomnoFlo helps researchers move away from large-animal-style anesthesia delivery and toward a lower-flow approach that fits small patients better. That means better control, less waste, and a simpler workflow for common rodent anesthesia applications.

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Better welfare A lower-flow approach supports more appropriate anesthetic delivery for small animal patients.

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Better workflow A smaller, simpler setup helps reduce hassle and improve day-to-day consistency.

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Better long-term cost control Reduced anesthetic waste can translate into meaningful savings over time.

We’re not about making research “cheap.” It’s about making anesthesia more appropriate, more efficient, and easier to manage.

SomnoFlo low flo anesthesia vaporizer for small animals, exotic animals, rats, mice

Calculation based on:

  • Flow rate of 0.2 L/min for SomnoFlo & 2 L/min for traditional
  • Iso concentration of 2%
  • Annual calibration cost of $200 - $300* for traditional.
  • Average cost of a typical 250 mL bottle size of Iso is $35: Volume x $35 x 4 = $Cost/year
  • Compressed gas fees vary from academia to pharma. Most tanks are rented with fees for tank fill/replacement averaging ~ $1,000/year.
  • Calculations are based upon a specific customer request, and can be adjusted to other specific uses.

How SomnoFlo® works

SomnoFlo draws directly from the bottle

Its compact design takes up little counter space and is capable of producing carrier gas rates as low as 50 mL/min. The built in air compressor allows for delivery of vaporized anesthetic using room air, or attach the SomnoFlo to a source of compressed gas.

SomnoFlo operates with ambient air or compressed gas

The SomnoFlo low-flow anesthesia system operates using an internal air pump with ambient air or with compressed gas. For gas supplied at > 15psi, the SOMNO-7305 Preset Pressure Reducer is required to regulate the pressure.

SomnoFlo with warming connection

SomnoFlo draws anesthetic directly from the standard 250mL bottle placed in a convenient holder outside the vaporizer.

What your peers say

Dr. David Coggin-Carr
University of Vermont
“Everything has been going very well – we have done a ton of surgeries in the last few weeks and used minimal isoflurane with no obvious exposures, which my technician is thrilled with.”
Sarah Schlink, DVM,DACLAM
University of Missouri
“We have a few somnosuites as well as somnoflos, they are great!”
Jason cummings
Colorado State University
“We purchased the SomnoFlo several months ago and absolutely love it! We have used it many times and, while we had issues at the beginning with a calibration issue that Kent Scientific fixed quickly, we haven’t had any issues since and it has worked great! We have been telling other groups here at CSU to purchase one for their labs. Most labs here use the older style vaporizing anesthesia systems that require annual calibration so switching would be advantageous as well as a cheaper alternative”
Carlo M Malabanan / Lab Manager
Mouse Metabolic Phenotyping Center at Vanderbilt University
“We have 4 SomnoFlo units and all 4 of us rodent surgeons here LOVE them! The vaporizers are used extensively and we’ve had them for almost a year now and not one of us had to replace the 250ml bottle of Isoflurane that we started with yet. It is so efficient that from November until this month (August), and after 166 surgeries, the charcoal filter is heavier by a mere 14 grams. We placed an order for 1 more unit recently so that we can completely replace all of the high flow vaporizers that we used before.”
Keely Walsh, BS, LATG
Artizan Biosciences, Inc.
“We actually did order a SomnoFlo and we like it a lot. We just ordered a second one.”
Kiera Ottino, Research Technician
Massachusetts General Hospital
“We ended up purchasing the Somnoflo and it works amazing. We also have received great customer service whenever we have needed help/ and or have had questions about the product.”
Lauren Sohn, Scientist
Sigilon Therapeutics
“The SomnoFlo has a significantly smaller footprint than the standard isoflurane cart; our procedure room feels like it’s doubled in size since replacing the cart that was in the middle of the it with the SomnoFlo on the counter. I used to trip over the legs of the isoflurane cart almost daily, and I’m delighted to have it out of the room. Being able to use room air instead of oxygen is a huge bonus – no more monitoring how much oxygen we have left in the tank or stressing over whether the tank will be replaced on time before our next surgery. The SomnoFlo has made our lives much easier.”
Michael Sande
Northwestern University
“Wanted to check in since receiving the SomnoFlo that we ordered a few months ago. The system works amazing! All our lab members have had a chance to use the system and we are highly impressed with the efficiency of the machine and how quickly we are seeing the mice wake up from anesthesia after finishing our procedures with them.”
Jarrett Sweeley, Research Compliance
University of Arkansas
“We actually purchased one of the SomnoFlo units a few months ago and have been using it with our rodent procedures. It has worked great and all of our users seem to love the system.”
Pamela Bortz,Sr. Vet Technologist
St. Joseph’s Hospital
“I recently purchased a SomnoFlo and our folks love it!”
Jonathan Linton
Fred Hutchinson Cancer Research Center
“We are very pleased with our new SomnoFlo. We often need to work in a small space so the size of a conventional vaporizer can be annoying. The SomnoFlo fits where we need it and is simple to setup and use. We’ve recommended it to other labs in similar situations to ours.”
Dr. Shelly McErlane D.V.M.
The University of British Columbia
“-The system sits upright so takes less counter space -the system primes itself, empties itself and uses a bottle of isoflurane rather than the syringe – love this!”

SomnoFlo resources

  1. 1.) Webinar: A Blended Approach to Preclinical Research Anesthesia — Rethinking Room Air vs Pure O₂ : See Video
  2. 2.) Warming Up for Success: Comparative Efficacy of Thermoregulatory Devices in Rodent Anesthesia : See Video
  3. 3.) Tail Curl Reaction in an Anesthetized Mouse : See Video
  4. 4.) SomnoFlo® Setup and Mouse Anesthesia Protocol : See Video
  5. 5.) Somno® Low-Flow Electronic Vaporizers: Extremely Precise Anesthesia Delivery : See Video

Want to see whether SomnoFlo fits your workflow?

Start with the calculator, watch the short webinar, or request pricing if you’re already comparing low-flow anesthesia systems.

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