Culture Media
for Stem Cells

Feeder-free Medium for Human-derived ES and iPS Cells

No feeder cells and xeno-free culture medium

StemFit® medium was developed to produce a reliable and well-defined growth condition for human stem cells. It has all of the necessary components for the culture of embryonic stem (ES) cells as well as induced pluripotent stem (iPS) cells, and contains only xeno-free components—nothing from other animal sources. StemFit also eliminates the need for feeder cells. These important benefits lead to a reduction of variation in growth, and reduces concerns for contamination in the cultivation of stem cells. StemFit is so much better than other available products that it is even recommended by the Nobel prize winner Shin’ya Yamanaka, whose discovery of how to reprogram mature cells into pluripotent stem cells has revolutionized research in the field.


Less media volume needed

Due to the high-quality components and the ideal concentration of nutrients, the volume of StemFit required per plate is lower than that of conventional media, and even lower than that of other feeder-free media. A further 50% reduction in media consumption is the direct result of far fewer feeding steps during the week. This means that you use only 4.5 mL of StemFit versus 12 mL of conventional media, yielding a savings in reagents, time, and money.


StemFit Usage



                Requires 50% less media

                No weekend maintenance steps

                Easy handling

                Higher proliferation rate

                Enables single cell cloning

                Feeder-free & Xeno-free

                Reproducible growth rates


User Manual
Technical Tips
Bambanker Cell Freezing  Media

e-Myco PCR  Mycoplasma  Detection Kits

Cell Culture Protective Tray
NEPA21 Electro-Kinetic  Transfection System
Disposable  Hemocytometers


Reproducible growth rate

The cultivation of stem cells using StemFit results in a very reproducible growth rate (below left), and consistency means perfect planning for your experiments. No more variation due to feeder cells! You’re better off without them; analyzing the morphology of stem cells cultivated in StemFit shows that colony shape and size are very similar to that of colonies grown on feeder cells (below right).

StemFit Growth Rates


Free up your weekends

The maintenance of stem cells is very complicated and labor-intensive. Worst of all is the tedium of a feeding step during the weekends! StemFit allows a weekend devoid of stem cell media changes. The recommended weekly workflow shown below gives you more time with friends, family, and sure … for doing more experiments. (Black circle = cell passage; Pink circle = media change; white circle = maintenance-free day)


StemFit Feeding Schedule


Single cell cloning

StemFit enables superior efficiency during colony formation from a single cell clone. This improvement minimizes the effects of stress and more reliably delivers top-notch stem cells for downstream applications. Repeatable efficiency of cell production will allow your lab to duplicate individual clones when you need them, every time.


Easy transition from feeder cells

The majority of the stem cells are still maintained in feeder-cell dependent cultivation. The transition from feeder-cell systems to non-feeder-cell systems is a snap with StemFit. Just switch the medium two days before passaging the cells and continue cultivating them in StemFit. After two to three passages the feeder cells will be completely diluted out and a pure stem cell culture will be obtained. No extra steps. No fuss. Just a few days of your normal protocol, and an increase in lab efficiency.


StemFit Transition



StemFit with different matricesCompatible with many matrices

StemFit has been tested on many different matrices. As can be seen on the right, the fold expansion rate of cells cultured in StemFit is much higher when compared to Medium A from the market leading competitor. Different cell matrices were used as growing matrix and combined with StemFit or with Medium A. The fold expansion of 201B7 hiPS cells was determined after 7 days.


















Less production of lactate and more consistent gene expression profile

The typical methods used for the cultivation of stem-cells provide plenty of opportunities for these cells to undergo stress. Every passage and growth period may introduce unwanted changes in gene expression profiles. The production of lactate, in particular, is the result of hypoxic stress. This often causes changes in the genome expression profile--or, worse still, leads to unwanted differentiation of the stem cells. The CGI Catapult Institute in London showed that there is considerably less lactate production when the cells are grown in StemFit.


They extended their studies to investigate the changes in gene expression caused by StemFit as compared to 4 commercially available media. Their results definitively showed that gene expression profile using StemFit was far more consistent. Less stress for your stem cells means less stress for you!


Ready-to-use Yes
Part Numbers SFB02500
Dilution Required None
Xeno-free Yes (no non-human components)
Feeder Cell Required No
Cell Type Compatibility Human ES and human iPS cells
Storage 2 years at -20°C





ORDERING - StemFit for Embryonic (hESC) and induced Pluripotent Stem (hiPS) cells


For a 10% discount, use code SFINTR2018 at checkout