Just – Evotec Biologics has launched J.Media, a concentrated, room-temperature stable powder cell culture medium that the Seattle-based CDMO says supported nearly 70 internal manufacturing projects before being offered as a standalone product. The company presented performance data at the BioProcess International (BPI) conference and exhibition in Boston, showing the medium outperformed several commercially available products on volumetric productivity and cumulative titer.

The commercial release targets a cost and logistics problem that scales with output: CHO-based protein therapeutics manufacturing needs very large media volumes, and the trend toward intensified, continuous processing makes it worse.

Why does media storage matter for R&D budgets?

Guy Rachmuth of Just – Evotec laid out the operational math in an interview with GEN. "Cell culture media requires significant footprint for both batching and storing media, including cold temperature storage for many final liquid media formulations," he said.

"Manufacturers often need tens to hundreds of thousands of liters of media, making storage efficiency an increasingly important consideration. In addition, mixing equipment limitations can necessitate compounding multiple media batches per run and increase operational complexity in manufacturing."

For facility planners, the claims translate directly into capital and operating decisions: cold storage capacity, mixing train sizing, and batch-record complexity. The concentrated powder format, according to the firm, cuts storage footprint and simplifies logistics compared with liquid media.

What did the perfusion tests show?

The pressure point is sharpest in intensified processes. Rachmuth noted that "these challenges become even more pronounced in intensified production processes, where continuous perfusion of bioreactors significantly increases cell culture medium volume requirements."

The performance figures the company reported at BPI:

• Cell densities routinely at 80–100 × 10⁶ cells/mL, with high viability maintained over 15–25 days or longer
• Volumetric productivities of up to 4–5 g/L/day in perfusion operations
• Higher volumetric productivity and cumulative titer than several unnamed commercially available media in side-by-side tests

These are vendor-reported figures presented at a conference, not peer-reviewed results, and the comparison products were not named. Buyers evaluating a switch would need head-to-head data on their own cell lines.

How did an internal tool become a product?

J.Media was originally built to serve Just – Evotec's own manufacturing programs and then became a core platform technology across the organization. "Given the success we've seen internally, we recognized an opportunity to make J.Media available more broadly to the industry," Rachmuth said. "By offering it as a standalone product, we aim to help other organizations benefit from the same combination of productivity, scalability, and cost efficiency."

That internal-first development path gives the product a production track record — nearly 70 projects — but the company has not disclosed pricing, lead times, or the regulatory support package that would accompany external supply.

What should process development teams watch?

The launch lands as more biopharma manufacturers adopt perfusion and continuous processing to raise facility output without adding stainless steel. A medium that stores at room temperature in concentrated form and sustains 4–5 g/L/day perfusion productivity could shift media sourcing decisions for intensified programs — provided independent benchmarks confirm the company's numbers. Expect first external-user data to surface as adopters publish or present their own runs.