The SciAps Z-903 is a new handheld LIBS analyzer. It provides fast, high-accuracy elemental checks on site. Unlike XRF, the Z-903 uses a strong laser to test samples. It can measure light elements that others miss. This includes Carbon (C), Lithium (Li), Beryllium (Be), and Boron (B). This feature makes the Z-903 vital for precise PMI. It is key for L-grade stainless steel and low-alloy steel. It also helps in geology and mining where light element data is important for grading.