login | register | order now | view cart | feedback
Viral Transduction

Products >  Viral_Transduction >  Retroviral_Transduction_Tools >  Retrovirus_Concentration

Retrovirus Concentration—Concentrate Retroviral Supernatants without Ultracentrifugation

Retro-X Concentrator provides a fast, simple, and highly efficient method for concentrating any retroviral stock including MMLV or MSCV based retroviral supernatants. In the simple protocol, you just mix your retroviral supernatant with the retrovirus concentration reagent, incubate for a short period, and spin the mixture in a standard centrifuge.

You’ll increase your retroviral titer by up to 100-fold and obtain excellent recoveries—with no ultracentrifugation.

Far Simpler Than Ultracentrifugation

Compared to ultracentrifugation, the Retro-X Concentrator is more flexible in terms of scale, is easier to use than ultracentrifugation, and requires no specialized equipment.

Scalable for Supernatants of Any Volume, Any Titer

The Retro-X Concentrator reagent is a 4X concentrate, so it can be added to any volume of supernatant containing any amount of virus or any starting titer. At Clontech, scalability has been successful for supernatant volumes up to 250 ml.

Increase Titers By Up To 100-fold

Using the Retro-X Concentrator protocol, we were able to increase the titer of retroviral supernatants for various envelope-pseudotyped retrovirus samples from 46 (amphotropic and 10A1 pseudotypes) to 100-fold (ecotropic and VSV-G), when concentrating them from 10 ml down to 100 µl.

  At-A-Glance   Documents   Images & Data   Resources


  • Simple mix and spin protocol
  • Hassle-free and easily scaled up for large volumes
  • No ultracentrifugation required
  • 100X concentration
  • 90% yield

*Retro-X Concentrator can also concentrate lentivirus supernatants utilizing the incubation times recommended in the Lenti-X Concentrator Protocol-At-A-Glance


  • Retroviral transduction studies
  • Increased multiplicity of infection (MOI)
  • Rescue of low titer supernatants

Additional Information

Please see the product's Certificate of Analysis for information about storage conditions, product components, and technical specifications. Please see the Kit Components List to determine kit components. Certificates of Analysis and Kit Components Lists are located under the Documents tab.

Cat. # Product Contents Size Price Units Select
631455 Retro-X™ Concentrator 100 mL $204.00
631456 Retro-X™ Concentrator 500 mL $719.00


Recommended Products
Cat. # Product Contents Size Price License Units Select
631530 Retro-X™ Universal Packaging System Each $797.00 License Statements
T100A RetroNectin® Recombinant Human Fibronectin Fragment 0.5 mg $170.00 License Statements
631453 Retro-X™ qRT-PCR Titration Kit 200 Rxns $450.00  
631455 Retro-X™ Concentrator 100 mL $204.00  

Takara Bio USA is a Takara Bio Company © 2018 Privacy Policy | Terms & Conditions | Terms of Use