The FTA indicating mini card is designed with a color indicator that changes from pink to white when sample is applied. Recommended for use with clear samples such as buccal samples or cultured cells. FTA indicating mini cards utilize patented Whatman FTA technology that simplifies the handling and processing of nucleic acids. FTA cards contain chemicals that lyse cells, denature proteins and protect nucleic acids from nucleases, oxidative, and UV damage. FTA mini cards rapidly inactivate organisms, including bloodborne pathogens, and prevent the growth of bacteria and other microorganisms. They allow you to capture nucleic acids in one easy step. Simply apply your sample to the FTA card. Cell membranes and organelles are lysed and the released nucleic acids are entrapped in the fibers of the matrix. The nucleic acids remain immobilized and are stabilized for transport, immediate processing or long-term room temperature storage. Since captured nucleic acids are stabilized, FTA cards facilitate sample collection in remote locations and simplify sample transport. For example, you can collect samples in the field without worrying about immediate refrigeration. Ship your samples back to the laboratory without expensive special handling or dry ice and process at your convenience. Two sample areas for application of up to 250µl whole blood or 50µl plant homogenate per card. It is convenient for protocols that require different locations for testing and archiving samples. Different samples can be processed independently. 100/Pack. Whatman #: WB120056.