The QPON immersion sampler produces a superior sample for microstructural evaluation for iron. A three-second immersion into the pouring sprue or ladle allows the operator to get a sample coupon quickly and safely. With the QPON immersion sampler, your foundry can eliminate the casting of a micro specimen in each mold or the pouring of a separate mold. The potential savings from yield can be significant. Sampling can be done as required and precisely tailored to meet your quality control requirements. The QPON sampler is very easy to use with repeatable results. Simply submerge the sampler into molten iron for three seconds. Upon removing from the molten iron, the metal inside the sampler’s chamber solidifies. The solid slug can be extracted in fifteen seconds. The sample can be prepared and polished without cutting.