NOTE: The CTS KnockOut SR XenoFree Kit will be discontinued as of January 31, 2021. Consider CTS KnockOut SR XenoFree Medium (12618013) for a seamless transition.

CTS™ KnockOut™ SR XenoFree Kit

Back to top


GIBCO® KnockOut™ SR XenoFree CTS™ enables the growth and expansion of human embryonic stem cells (hESC) and human induced pluripotent stem cells (hiPSC) in a cell culture medium containing only human-derived or human recombinant proteins, which facilitates the transition of hESC and hiPSC research from the bench to the clinic.

The GIBCO® CTS™ product line enables you to reduce your burden in qualifying reagents during your transition from research applications to clinical applications.

• Defined, xenofree medium for hESC⁄iPSC stem cell culture.
• First-to-market xenofree hESC⁄iPSC product intended for Ex Vivo tissue and cell culture processing applications.

GIBCO® KnockOut™ SR XenoFree CTS™ does not contain bovine or other non-human, animal-derived components. Besides pluripotent stem cell culture expansion and maintenance, KnockOut™ SR XenoFree CTS™ can be used for hESC⁄hiPSC cryopreservation, derivation, and differentiation studies.

GIBCO® CTS™ products are of high quality, and are supplied with harmonized documentation such as Certificates of Analysis, Certificates of Origin, and access to authorization letters for our Drug Master Files, as appropriate.
The KnockOut™ SR XenoFree CTS™ Kit includes a bottle of KnockOut™ SR XenoFree CTS™ as a frozen liquid in a 500mL or a 100 mL PET bottle and a product manual.
For Research Use or Manufacturing of Cell, Gene, or Tissue- Based Products.  CAUTION: Not intended for direct administration into humans or animals


Classification: Serum-Free, Xeno-Free
Culture Environment: CO2
Endotoxin Level: ≤ 10 EU/ml, ≤ 10 EU/ml
Glucose: No Glucose
Manufacturing Quality: cGMP for medical devices, 21 CFR Part 820 and ISO 13485
Product Line: CTS™, KnockOut™
Purity or Quality Grade: ES Cell-Qualified
Quantity: 100mL
Serum Level: Serum-Free
Sodium Bicarbonate Buffer: Sodium Bicarbonate
Cell Type: Stem Cells (iPS - Induced Pluripotent Stem), Stem Cells (Embryonic)
Form: Frozen
Glutamine: No Glutamine
Phenol Red Indicator: No Phenol Red
Species: Human
With Additives: HSA (Human Serum Albumin)
Sterility: Sterile

Contents & storage

One bottle

Store at -20°C to -5°C. Protect from light.