The Sigma test verifies RoHS compliance by ensuring that products adhere to stringent environmental standards. RoHS, or Restriction of Hazardous Substances, limits the use of harmful materials like lead and mercury in electronics. This test thoroughly examines components to confirm they meet RoHS guidelines, guaranteeing that products are both environmentally friendly and safe for consumers. Achieving RoHS compliance reflects a commitment to sustainability and boosts marketability by aligning with global eco-friendly manufacturing standards.