Working Group 1
Quality Assessment and Reproducibility for Instruments & Images in Light Microscopy
The Consortium for Quality Assessment and Reproducibility for Instruments and Images in Light Microscopy (QUAREP-LiMi), formed by the global community of practitioners, researchers, developers, service providers, funders, publishers, policy makers and industry related to the use of light microscopy, is committed to democratizing access to quantitative and reproducible light microscopy and the data generated by it.
Our mission is to provide a comprehensive set of community-agreed guidelines, protocols, automation procedures and other resources aimed at improving quality control, quality assurance, and instrument/method calibration. The stakeholders advocate for the use of the highest level of reproducibility for data generated by light microscopy methods in scientific research and biotechnology applications. In support of achieving its mission, QUAREP-LiMi:
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sanctions Working Groups to form teams that focus on specific technical or outreach topics;
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maintains, disseminates, and teaches best practices, protocols, and software tools; and
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collaborates with providers of reference materials or instrumentation or other tools that enable the easy implementation of best practices at the community level.
We came together in our first online Web meeting on the 28th of April, 2020, with about 50 attendees. By now (24st of April 2024), the network has grown to 620 people from 41 countries worldwide. We have members from academia (research labs, core facilities), national microscopy communities, companies involved in the microscopy business, organizations or institutions related to standardization on a national or international level, and scientific publishers and observers from funding agencies (see the graph below and on the member page for an overview).
Ten working groups (WGs) were established in the 2nd General Meeting on the 9th of July 2020 to bring our common aims quickly forward. Our web page gives an overview of QUAREP-LiMi’s work. In the 3rd General Meeting, WG 11 “Microscopy Publication Standards” and later WGs 12 “Image Visualization and Analysis” and 13 “Phototoxicity” were established. WG 14 “Environment” and 15 “FLIM” are in the process of being established, and WG 8 is restructured to work on “Education, Training and Outreach”.
QUAREP-LiMi operates a NextCloud and an OMERO server, serving as a centralized repository and exchange point for our collective work. These platforms facilitate collaboration and data sharing among our members.
QUAREP-LiMi is absolutely open to new members, and we are looking forward to your contribution. If you are interested in joining our initiative, please fill out our membership form. Use our form for changing your working group (WG) or joining a new WG. For any further questions, please contact us.
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Working Group 2
36th meeting, 13th of November 2023
Meeting date
13/11/2023 @ 5:00 PM (CET/CEST)
Meeting summary
After a short session of QUAREP-LiMi news and updates on our other running projects, we mainly focussed on our planned paper which should accompany the publishing of our protocols. We discussed main aspects, determined topics which need to be addressed and members who our responsible for working on the topics. To be able to have time to do so, we decide to skip the meeting in January 2024.
Working Group 3
Working Group 4
49th meeting, 16th of September 2025
Meeting date
16/09/2025 @ 5:00 PM (CET/CEST)
Meeting summary
LacJ updated the group on the latest news from QUAREP-LiMi. The group then discussed the results and the discussion section of the protocol, and it was agreed to include the data obtained using MetroloJ_QC, where the experimental distance is normalized to the reference distance. The group also addressed the naming convention, in light of the new data being generated for both widefield (WF) and spinning disk confocal (SDC) systems.
48th meeting, 17h of June 2025
Meeting date
17/06/2025 @ 5:00 PM (CET/CEST)
Meeting summary
LacJ presented a report from the last SC meeting. AzeM informed the group that a new OB representative is needed. The group discussed the recent modifications to the protocol made by DauA and agreed on the next steps to finalize it: DauA and AzeM will collaborate on developing the discussion section. It was also decided to begin acquiring new datasets using widefield (WF) and spinning disk confocal (SDC) systems. A new batch of slides containing 1 µm TetraSpeck beads will be sent to those interested in acquiring images. The group will take a summer break in July and August, with the next meeting scheduled for September 16th.
46th meeting, 15th of April 2025
Meeting date
15/04/2025 @ 5:00 PM (CET/CEST)
Meeting summary
WG04 members began the meeting by discussing feedback from the annual meeting. The author list on protocols.io was also addressed, and it was agreed that all co-authors should enter their full institutional address in the affiliation section under the “Organization” sub-tab.
The group also discussed the upload of WG04 data into OMERO and reviewed the adopted naming conventions.
Regarding next steps, members agreed to move forward with improving the first version of the WG04 protocol. The immediate goal is to adapt the protocol for use on confocal spinning disk and widefield microscopy systems.
44th meeting, 18th of February 2025
Meeting date
18/02/2025 @ 5:00 PM (CET/CEST)
Meeting summary
In the latest WG04 meeting, members reviewed the feedback received from a co-chair of another WG on the first version of the protocol. Final adjustments were discussed and agreed upon to refine the document before publication. Additionally, the group addressed authorship matters, ensuring proper acknowledgment of contributions and clarifying the necessary updates to affiliations on protocols.io.
Working Group 5
40th meeting, 13th of June 2024
Meeting date
13/06/2024 @ 3:30 PM (CET/CEST)
Meeting summary
We discussed the ELMI workshop, including how it went and what we could improve. We also covered the process of OMERO uploads and linking them to Airtable for tracking results, as well as the filenaming nomenclature.
Working Group 6
Working Group 7
33rd meeting, 17th of February 2025
Meeting date
17/02/2025 @ 5:00 PM (CET/CEST)
Meeting summary
The meeting covered updates on France BioImaging’s metadata efforts, including OMERO.quay beta testing, buffer server deployment, and authentication improvements. WG10 discussed defining “raw” images and their metadata requirements, emphasizing the need for clarity on file formats. The website report highlighted the need for better organization and visibility of resources, with a proposal to create a landing page and potentially rebrand NBO-Q. Discussions on synonyms and profiles addressed term mapping challenges and possible alias extensions. Additional topics included a McGill student project porting NBO-Q to LinkML and preparations for an ISO discussion at OME2025. The next meeting date requires rescheduling due to Easter.
31st meeting, 21st of October 2024
Meeting date
21/10/2024 @ 5:00 PM (CET/CEST)
Meeting summary
The following topics were discussed:
- Report back on work done by members of the WG to align the terminology used in the upcoming WG11 checklist with NBO-Q
- Mandate from the SC to WG7 to generate an NBO-Q landing page.
- The primary target audience for the NBO-Q landing page is QUAREP members.
- The NBO-Q landing page will start by simply delineating the data model and why it is essential to the QUAREP mission. Subsequently, more content, including examples and visualizations, will be added gradually. A group of volunteers were identified to work on moving this project forward. They will present their work during the next meeting.
- In all we do, it is essential to advance together and develop consensus with all members of QUAREP. To this aim, it is crucial to educate all members of QUAREP on what metadata is, how metadata can be represented in machine and human-readable manners, and why organizing metadata in a model is essential.
Working Group 8
Working Group 9
Working Group 10
34th meeting, 10th of December 2024
Meeting date
10/12/2024 @ 4:00 PM (CET/CEST)
Meeting summary
Presentation by Siân Culley (King’s College London): be there!
30th meeting, 12th of March 2024
Meeting date
12/03/2024 @ 4:00 PM (CET/CEST)
Meeting summary
This meeting will be dedicated to a quick review of the RID parameter, a global discussion about the new parameter AS told us about and importantly, the ByLaws document with the need of volunteer candidates for the various positions (SC, EBR, OB).
Working Group 11
40th meeting, 22nd of May 2025
Meeting date
22/05/2025 @ 5:00 PM (CET/CEST)
Meeting summary
1-During the last meeting, you expressed your wish to publish the bare minimal list as a standalone document instead of the comprehensive manuscript we were initially envisioning. The main concerns we have are figuring out the type of journal that accepts this format/content and the fact that there are at least 3 publications providing guidelines/checklists for methods reporting.
2-The second action item was to organize the live document that we created a long time ago in which we determined what was level 1 (required), 2 (depends on the application), 3 (nice to have) to build a logic tree for biologists to generate the appropriate checklist depending on the experiment they did.