Take the HaloTag® Challenge.

Boost Protein Recovery from Mammalian Cells by 30%-60%.

  1. Step 1

    Purchase a kit

    HaloTag® Mammalian Protein Purification Systems

    Click here for details »

  2. Step 2

    Redeem FREE clone or vector

    Find a pre-validated Kazusa HaloTag® ORF

    Click here for details »

  3. Step 3

    Share your results

    Compare HaloTag® results, submit data and receive a FREE t-shirt plus be entered into multiple drawings for an iPad 2.

    Click here for details »

Customer Testimonials

Read what customers are saying about the HaloTag® platform for use in mammalian protein purification.

"This approach was significantly faster and cheaper than a comparable Flag-tag based approach."

Chumanov, R.S., et al. (2011) Protein Expr. Purif. Apr; 76(2):145-53.

See more testimonials about HaloTag »


*Receive a free shirt when you share your results

*Automatically entered into up to three drawings for an iPad 2

Upload your data for a chance to win »

Rules and Regulations

Offer only valid in participating locations.

Check with your local Promega representative for details.

Read full rules and regulations »

The HaloTag Challenge ended December 31, 2011.

Learn more about the HaloTag® Technology