Metal-ion control breakthrough in high-purity process chemicals, with key grades reaching ppb level

Electronic-grade purity is one of the most critical metrics for process chemicals. The team systematically optimized purification trains—distillation, adsorption and microfiltration—and introduced online metal-ion monitoring for end-to-end trace control.

For etchants and cleaners used in advanced packaging, key metal ions such as iron, copper, sodium and potassium in certain grades are now stably controlled to ppb level, with markedly tighter batch-to-batch variation.

Higher purity directly impacts yield and device reliability. SEMPURION will keep iterating purification and analytical capability, extending high-purity grades across more product lines to support customers moving to finer processes.