Reducing serum variability and eliminating the need for a programmable freezing system is possible. We review the key features of Bambanker™ , from Nippon Genetics Europe, the ready-to-use, serum-free cell freezing medium distributed by Proquinorte.
Why the freezing medium matters more than it seems
Freezing a cell line is a routine procedure, but rarely harmless. The quality of the cell freezing process determines subsequent recovery, the reproducibility of assays, and ultimately, the reliability of the data. And much of this uncertainty stems from a point that is rarely questioned: the medium in which the cells are frozen.
Serum is probably the most underestimated variable in the process. Its composition changes from batch to batch and carries undefined components into the cryopreservation stream, so two seemingly identical freezes can behave very differently after thawing. Added to this variability are the time spent preparing the solutions, late-onset cell death—which isn't apparent in the immediate count but becomes noticeable in the following days—and the controlled freezing protocols, which require expensive equipment and perfect timing.
The problem isn't just one of survival, but of consistency. Irregular recovery forces repeated trials, complicates comparisons between experiments, and weakens the reliability of the results. That's why more and more laboratories are reviewing a step they took for granted for years.
When each experiment depends on the quality of certain cells, the medium in which they are frozen ceases to be just another consumable and becomes a critical decision.
Bambanker™ Standard: simplicity without compromising on quality
Bambanker™ Standard responds precisely to this rethinking. It is a serum-free cell freezing medium, with a defined and constant composition, that combines in a single reagent the advantages that a laboratory seeks when cryopreserving:
Whey-free: defined composition that reduces batch-to-batch variability and undefined components.
Ready to use: no dilutions or prior preparation steps.
Direct freezing at -80 °C: long-term storage at -80 °C or in liquid nitrogen, without a controlled-rate freezer or stepped protocols.
Recovery greater than 90%: high viability and growth after thawing.
Wide compatibility: suitable for most cell phone lines and types.
More than any of these features individually, what makes the difference is their combined effect on the routine: fewer manipulations, less reliance on specialized equipment, and a more consistent starting point for each freeze. This consistency then translates into more comparable tests and fewer working hours wasted repeating failed freezes.
Designed for everyday laboratory work
One of the great strengths of Bambanker™ Standard is its versatility. It is the recommended choice for most commonly used cell lines, from established lines to primary cells, and has published evidence supporting its use in more than 120 different cell types. In practice, this means that a single reagent covers virtually all cryopreservation work in a typical laboratory.
For very specific needs—cells particularly sensitive to DMSO or iPS and ES cell lines —the Bambanker™ range offers dedicated formulations. But for everyday use, the Standard version provides the best balance of simplicity, reliability, and performance.
A BAMBANKER™ SOLUTION FOR EVERY NEED
Frequently Asked Questions
Do I need a rate-controlled freezer to use Bambanker™ Standard?
No. It allows direct freezing at -80 °C without step protocols: simply resuspend the cells in the medium, fill the cryovial and store it.
Does it contain DMSO?
Yes, the Standard format includes DMSO in its ready-to-use formulation. For DMSO-sensitive cells, there is the Bambanker™ DMSO Free version.
What cell types is it compatible with?
It is the recommended option for most commonly used cell lines, with published evidence in more than 120 cell types.
Where can I store the cells once they are frozen?
At -80 °C or in liquid nitrogen for long-term preservation.
Why choose a serum-free medium?
Whey introduces batch-to-batch variability and undefined components. A medium with a defined composition improves reproducibility and consistency between experiments.
In a laboratory where every experiment counts, the choice of cell freezing medium ceases to be a minor detail and becomes a strategic decision. With Bambanker™ Standard , freezing your cells becomes a simpler, reproducible, and more reliable step, ensuring that recovery after thawing is never the variable that compromises your results.
See Bambanker™ Standard
