FTA™ Indicating Micro Cards are the exact same as the FTA™ Micro Card with a color indicator that changes from pink to white when sample is applied. They are recommended for use with clear samples such as buccal or cultured cells. FTA™ Indicating Micro Cards offer one sample area for application of up to 125µL whole blood or 25µL plant homogenate per card. The FTA™ Micro Card utilizes patented Whatman™ FTA™ technology that simplifies the handling and processing of nucleic acids. It contains chemicals that lyse cells denature proteins and protect nucleic acids from nucleases oxidative and UV damage. FTA™ Micro Card rapidly inactivates organisms including bloodborne pathogens and prevents the growth of bacteria and other microorganisms. It allows 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. Recommended when only one sample is needed. 100/Pack. QIAGEN® #: GBS WB120211.