Stork's 4SG Lab × REPROLIFE (Japan): A Cryopreservation Technology Exchange

Lecture

2026-09-07

On Monday, August 31, 2026, REPROLIFE (Japan) — the globally recognized authority in vitrification technology — visited our Taipei branch, bringing three of its own embryologists along. Together, they exchanged expertise on freeze-thaw technique in Stork 11's 4SG Lab, and ran an advance test of the new Cryotec RtU vitrification/warming reagent.

REPROLIFE (Japan) brought a team of 3 embryologists to Stork 11 (Taipei) for a freeze-thaw technology exchange and to test the new Cryotec RtU vitrification/warming reagent.

About REPROLIFE

REPROLIFE was founded by Dr. Masashige Kuwayama, the developer of vitrification — one of the most important technologies in assisted reproduction. This breakthrough dramatically improved thaw survival rates for eggs and embryos, pushing them from a stubborn sub-90% ceiling up to 96–99%.

With a founder like that, it's no surprise REPROLIFE remains an industry leader. As of 2026, it's still the world's leading authority on vitrification, and its Cryotec technology remains the industry gold standard — continuing to drive R&D in reproductive consumables (cryo-devices, reagents) in pursuit of an ever-higher thaw survival rate.

Stork has also built its own high-spec “4SG Lab,” designed around “Time-lapse (4D),” “Smart,” and “Green (sustainable)” — equipped with the Geri time-lapse incubation system and high-precision automation, achieving a thaw survival rate of over 94%! Beyond being a strong validation of Stork 4SG Lab's technical quality, the biggest takeaway from this exchange was for our own embryologists: the attention to detail and intuition they've quietly built up in the pursuit of perfection were now backed by clear, first-hand scientific explanation straight from the technology's original developer!

Exchanging freeze-thaw techniques with REPROLIFE's embryologists inside Stork's 4SG Lab — a strong vote of confidence in Stork's laboratory.

Stork has always held itself to high standards — in service quality, lab standards, and ongoing training for our embryologists — all in the name of serving our patients better. This exchange didn't just deepen our understanding of the latest technology and earn recognition from the technology's own developer; we hope it also translates into even more value for the patients we serve.

The biggest takeaway from this in-depth exchange: the "attention to detail" and "intuition" our embryologists have quietly built up in pursuit of perfection were confirmed with clear scientific reasoning. Thank you to our embryologists for their everyday dedication, and to the visiting Japanese team for their feedback.

#HoldYourHandTillTheEnd

Want to know more about Stork's 4SG Lab? Check out our lab walkthrough video