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Green Labs Pilot Programs


Fume Hood Shut the Sash Pilot Program

Fume Hood Fact Sheet
Fact sheet about fume hoods and best practices. Credit: Genevieve Gandara

Fume Hood Sensor
Fume hood sensor in action! Credit: Genevieve Gandara

Shut the Sash Signage 3
Fume hood sticker information. Credit: Genevieve Gandara

Fume hoods account for 40-70% of the total energy used by laboratories.

As such, campaigns working to change behaviours surrounding fume hood sash closure make labs not only more energy efficient, but also safer. Here, Caltech Green Labs proposes a summer-long campaign to collect data, educate, encourage behavioural changes, and assess success of a "Shut the Sash" campaign.

In a study published by MIT, the addition of homemade Motion and Sash Height (MASH) sensors, which alarm when the fume hood is open and unoccupied by a user for a set amount of time, encouraged users to close the sash and resulted in a 75.6% decrease in average sash height as compared to control groups that did not have a MASH sensor installed. As a result, the energy costs of running each of the fume hoods was reduced by $1,159 per year. We hope to see similar results if such a campaign was implemented at Caltech, making users both more efficient and safer while working in or around fume hoods. In addition, we hope to build upon the original study by incorporating data collection capabilities.

Each homemade MASH sensor costs around $20-$50 to build and are very simple to install. As such, we hope to build and install 50 MASH sensors in various buildings across Caltech. We will preferentially choose buildings that have a large number of variable air volume (VAV) fume hoods that are ideal for our study. In addition, as part of the campaign we will coordinate with lab managers to increase awareness about the program, educate users on proper fume hood usage, and educate users on how the MASH sensors work. The MASH sensors will alarm if a fume hood is left open for more than 5 minutes without a user present, alerting users to shut the sash. Furthermore, participating labs will be entered into a raffle to win donuts for their entire lab!

First fume hood installation
Check out our first official fume hood sensor! This sensor has can detect the height of this sash, as well as if a user is present or not (if it is left unattended too long it will alarm!). It also has WiFi capabilities, so we can download data in real time to see how labs are doing. Credit: Genevieve Gandara

To run this project successfully, we intend to use help in the form of one or two interns from June 17- August 30 2024. All data collected during this competition will be presented to the community in various forms, including (but not limited to) during the Green Labs Lightning Talks Event around September 20, 2024.

Our plan: Utilizing the help of one intern over the summer of 2024, we hope to build 50 sensors for installation. Before the sensors are installed, we will work with lab managers and PIs to gain permission to run the study, educate users on the safest and most efficient way to use their fume hood, and explain the competition. After a few weeks of baseline data collection, the sensors will be installed and subsequently the alarms will be turned on. Signs will be posted near the fume hoods to inform users of the function of the sensors and course of action to take if the alarm goes off. Education will continue after the program to encourage users on best practices. Our intern will present their work at the annual Green Labs Lightning Talks event, and will produce a writeup describing the campaign results to share with the community.


Lomi Tabletop Composter Program

Lomi Signage Information
What is a Lomi? Credit: Tasha Cammidge

Lomi - 3rd Floor Chen
Lomi Third Floor Chen Credit: Tasha Cammidge

Lomi Signage
Lomi Signage Credit: Tasha Cammidge

Did you notice our Lomi tabletop composters in some BBE kitchen areas?

Green Labs has deployed it's first Pilot Program! We have installed Lomi tabletop composters in the three Chen kitchen areas, a kitchen in Broad, and a kitchen in Beckman Institute in an effort to tackle food waste at Caltech. We will collect data on the usage of these devices to encourage adoption of sustainable lunchtime practices for labs in BBE. In just a few hours per run, these Lomi composters transform our food waste into usable compost dirt that our gardeners are able to use to fertilize the lovely gardens here at Caltech!

Lomi Compost Dirt
Lomi composters placed in the Chen kitchen areas have converted 200 Liters (53 gallons!) of food waste into compost dirt that has been diverted to the Caltech Gardens. Credit: Tasha Cammidge

Our plan: The composters are going to be run by Green Labs colleagues as needed ~5 pm – 10 pm to make usable compost dirt. If the composters are full or running, we will have small compost bins available beside the Lomi for people to add their food scraps to, or satellite bins that folks can fill up for transport to a Lomi. Signs indicating what can and cannot go into our composters are posted near the garbage cans and near each Lomi. We will be collecting data to show just how much food waste we are producing, and how valuable this food waste can be if diverted correctly. We hope to use this data to encourage Caltech to adopt more sustainable practices and invest more heavily in composting programs on campus.

We eventually want to make the machines available to "borrow" for large events (coming soon!), so if you have an event you'd like to borrow one for, please let us know and we will try to make it available!

Update: Since April 2023, we have diverted about 1036 kg (2285 lbs) of food waste! The Lomi composters have reduced that food waste to about 207 kg (457 lbs) of dirt that the Caltech Gardens are using to fertilize the wonderful campus grounds.

July 2024 Food Waste Diversion

July 2024 Lomi Dirt

Here is more information on Lomi composters.

Here is the Lomi Manual.


TipOne and Genesee Pipette Tip Box and Wafer Recycling Programs

Recycling Map
Credit: Tasha Cammidge

Pipette Tip Box Recycling Signage
Pipette Tip Box Recycling Signage Credit: Tasha Cammidge

Genesee Signage
Credit: Tasha Cammidge

Have you noticed new tip box recycling points near the mail boxes (or auditoriums *) in Alles, BI, Braun, Broad (*), Chen, and Spalding?

Pipette tip box recycling
In the first month, Green Labs has diverted 600 Liters (180 gallons!) of plastic waste that would have otherwise not been recycled. Credit: Trinity Dorger

Green Labs has partnered with USA Scientific and Genesee to implement pilot recycling programs for pipette tip boxes and wafers from TipOne or Genesee-affiliated brands! NO PIPETTE TIPS PLEASE

Please deposit ONLY your TipOne or Genesee tip boxes and wafers here, and our vendors will either redistribute these plastics to other labs in need, or will recycle these wafers and boxes within their company. In this way, USA Scientific and Genesee are making the end-of-life waste challenges of their own products a priority, thus closing the loop, and making our labs more sustainable!

Contact Trinity Dorger from USA Scientific or Erik Lawson from Genesee when the bins are full, so they can pick up our recycling bins and redistribute or recycle the pipette tip containers.

Update: Since May 2023, we have diverted over 3,642 gallons (13,786+ liters, about 1730 pounds) of plastic waste that would have otherwise not been recycled!


Styrofoam Recycling Program

Styrofoam Petition Poster
Credit: Tasha Cammidge

In 2024, Green Labs is excited to launch a Styrofoam Recycling Program!

This project will take a few months to get off the ground, so stay tuned for updates.

In the meantime, please see below for more information on Styrofoam and its harmful effects on us and our environment .

Click here to sign our petition asking vendors to reduce the amount of Styrofoam being sent to campus, and asking Caltech to develop a permanent Styrofoam recycling program.


Do you have a pilot project you would like us to pursue?

Fill out the form below or fill out an application form. (Submissions officially open in June 2023.)