a dedicated and experienced international team

The Team Behind our Staining Automation Innovations

We are passionate about supporting academic research by providing cost-effective, precision, low throughput, customisable tissue staining automation.


Bringing you auto-staining devices that are compact, affordable, flexible and easy to use for staining automation, diagnostic labs and research facilities on a budget.


Nikolay Samusik


Prof. Garry Nolan


Yury Goltsev


Caitlin Farquhar, VP of Marketing, Parhelia Biosciences

Caitlin Farquhar

VP of Marketing

Jonathan Fisher_3

Jonathan Fisher

Senior VP, Commercial


Mike Stadnisky

Chairman of the Board


Brandy Lee

Executive Admin

Leslie picture.jpeg

Leslie Gore

General Manager


Nels Wedin

Sr. Field Applications Engineer


Michael Craft

Field Applications Scientist

Spatial Biology Specialists

Our Co-Founders have been part of the Spatial Biology field since its inception, so we are uniquely positioned to help make this technology accessible for anyone entering this field

Our company Parhelia Bio provides a simple, efficient, and affordable solution to tissue auto-staining and automation for research, diagnostic, and pathology labs. We (the founders of Parhelia Bio) met at Stanford while doing our postdocs in the Nolan lab. Together we collaborated on the development of CODEX ultra–multiplexed staining technology and co-founded Akoya Biosciences (NASDAQ:AKYA) to commercialize CODEX and related methods. CODEX and Opal (later acquired by Akoya from Perkin Elmer) are now considered key technologies in the rapidly growing field of spatial biology.

From our lab work at Stanford, it became clear that multistep staining protocols such as CODEX itself require a significant effort. Achieving great CODEX staining takes hours of focused hands-on time and we saw that for many of our collaborators, it took months to master the protocol when they first started. We also were constantly wondering if there is a way to cut down on the use of expensive reagents such as DNA conjugated antibodies, without resorting to the ‘flip it on the parafilm’ trick, which often creates uneven staining. From this Parhelia was founded – to help save reagents, speed up the adoption of spatial biology techniques, and at the same time allow researchers and pathology labs to stay within their notoriously lean budgets.

Looking at the autostainer market at the time, we realized that there were no affordable autostainers on the market because they all use dedicated liquid handling robotics that are integrated into the instrument. Instead of following the market trends, we had the idea to miniaturize the staining apparatus down to the SBS footprint (a size of a 96-well plate) and thus utilize a variety of existing liquid handlers that were already on the market for the purpose of cycling the liquid exchanges. One most exciting option that we found was the OT-2 robot provided by Opentrons.

Parhelia Omni-Stainer tissue auto-staining

After months of dedicated engineering, we created a working prototype based on a capillary gap staining principle. The advantage of gap staining is that the sample is incubated in a very thin layer of liquid, thus greatly reducing the volume of reagents used, while the exchange of the liquids can be implemented by simply pipetting the new buffer to the top of the staining chamber and letting the gravity draw it in and instantly displace the old buffer. Using this prototype we successfully demonstrated the ability to automate a wide range of protocols, starting from simple IF, IHC, H&E stains and all the way to sophisticated multi-step protocols such as CODEX, RNAscope, IMC etc.

Moreover, we realized that we can make use of OT-2’s heat module and automate protocols that require heated incubations, such as Cas-FISH, Opal and even FFPE antigen retrieval (yes, to our surprise, turns out that one doesn’t really need a pressure cooker). We became the first company to design a gap staining chamber specifically for coverslip-mounted samples, a format commonly found in research applications, which seems to be ignored by other autostainer vendors. We aim to serve the scientific community by enabling the complicated multi-step protocols to be done efficiently and hoping to make tissue auto-staining truly affordable to all.

Parhelia Bio

Our history

  • 2022


    Based on the Early Adopter feedback, the Omni-Stainer™ was designed and released. Parhelia enters an official partnership with Opentrons for a complete low-cost auto-staining solution.

  • 2021


    A small set of PAR2 instruments were distributed to Early Adopter labs for assay development and verification. Additional staining methods and automation protocols were developed for Parhelia devices (H&E, IHC, multiplexed IF, Opal, RNAscope FISH).

  • 2020


    Work on developing inexpensive tissue staining automation started. The first PAR2 prototypes were developed and tested on liquid handling robots, including the first automated CODEX run.

  • 2019


    Parhelia was first incorporated as California S-corp.

  • 2016-2019


    While working with complicated Codex experiments, the founders saw the need for an easier way to execute lengthy tissue staining protocols. The idea of Parhelia was established.

OpenTrons 2 tissue auto-staining liquid handler

Our partners

Parhelia Bio is pleased to be partnering with Opentrons to offer competitive pricing on a complete tissue auto-staining solution. Omni-Stainer™ is compatible with most liquid handling robots, but if you don’t have one, we recommend our partner Opentrons OT-2.

Opentrons logo

Are you ready for Omni-Stainer™ to transform your life?

What people are saying...

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