Bio-Rad PTC-225 Tetrad

This used Bio-Rad PTC-225 Tetrad thermal cycler is a four block variant of the popular PTC series, built to run multiple protocols simultaneously across independent sample blocks. It has been a workhorse in molecular biology labs for standard PCR, RT-PCR, and gradient optimization work, offering fast ramp rates and reliable thermal uniformity across all four blocks. The unit has been tested for proper heating and cooling function prior to listing. The PTC-225 Tetrad supports interchangeable sample blocks, allowing labs to switch between plate formats and tube configurations depending on throughput needs. Its gradient function makes it especially useful for annealing temperature optimization during primer design and assay development. Many core facilities relied on this platform because it allowed several independent experiments to run at once without tying up multiple instruments. This system is well suited for research labs, university teaching labs, and diagnostic facilities looking for an affordable multi-block cycler. It comes from a working laboratory environment and shows normal cosmetic wear consistent with regular use. Buyers get a proven, dependable platform backed by decades of published protocols and reagent compatibility.