**No purchase necessary. This promotion is available only to life science professionals 21 years or older. Offer valid for sample requests received by July 31, 2015 or until sample supplies are depleted, whichever comes first. The sample size is 1 pouch, 100 mL 1% agarose, Cat. No. A25644. Limit one free sample per customer. Please allow 6 to 8 weeks for delivery. Cannot be combined with other discounts or promotions. Offer void where prohibited, licensed or restricted by federal, state, provincial, or local laws or regulation or agency/institutional policy. Other restrictions may apply.