No purchase necessary. This promotion is available only to life science professionals 21 years or older in the US and Canada (excluding Puerto Rico). By accepting the sample, you warrant that you are not prohibited by employment, contract, or law from accepting a sample from Life Technologies and that your employer has full knowledge of your actions and has consented to you receiving a free sample from Life Technologies. Sample requests must be received by December 31, 2014 or until sample supplies are depleted, whichever comes first. The sample is 2 mL (one vial). Limit one free sample per customer. Cannot be combined with other discounts or promotion. Offer void where prohibited, licensed or restricted by federal, state, provincial, or local laws or regulation or agency/institutional policy. Other restrictions may apply.