Solenis is a leading global provider of water and hygiene solutions. The company's product portfolio includes a broad array of water treatment chemistries, process aids, functional additives, cleaners, disinfectants, and state-of-the-art monitoring, control and delivery systems. These technologies are used by customers to improve operational efficiencies, enhance product quality, protect plant assets, minimize environmental impact, and create cleaner and safer environments. Headquartered in Wilmington, Delaware, the company has 78 manufacturing facilities strategically located around the globe and employs a team of over ~23000 professionals in >160 countries across six continents. Solenis is a 2025 Best Managed Company Gold Standard honoree. For additional information about Solenis, please visit www.solenis.com or follow us on social media. Position Summary The Quality Control Supervisor I oversees daily laboratory operations supporting chemical manufacturing activities. This role is responsible for laboratory personnel, testing programs, quality system compliance, equipment calibration and maintenance, and timely reporting of analytical results. The position ensures compliance with ISO standards, regulatory requirements, and company safety policies while supporting continuous plant operations. Key Responsibilities Lead daily Quality Control laboratory operations in support of manufacturing activities. Supervise, train, and develop laboratory technicians while maintaining staffing coverage for a 24/7 operation. Coordinate testing for production support, raw material approvals, investigations, customer complaints, projects, and supplier qualifications. Ensure compliance with

ISO 9001

requirements, laboratory procedures, record retention, and quality documentation programs. Manage laboratory equipment calibration, maintenance, and analytical testing activities. Support internal and external audits, certifications, corrective actions, and continuous improvement initiatives. Promote a strong safety culture and ensure compliance with all site safety and environmental requirements. Qualifications Required Bachelor's degree in Chemistry, Chemical Engineering, Biology, or related technical field, or equivalent experience. 10+ years of quality experience in a chemical manufacturing environment. Experience working within an ISO-certified quality system. Prior supervisory or management experience. Working knowledge of laboratory instrumentation, analytical methods, and testing procedures. Proficiency with Microsoft Office applications. Preferred 3-5 years of laboratory supervisory experience. ISO Auditor qualification.

ISO 9001

training certification. Work Environment & Physical Requirements Work is performed in office, laboratory, and chemical manufacturing environments. Occasional off-shift, weekend, or holiday support may be required. Ability to lift up to 50 pounds. Ability to wear required PPE, including safety glasses, hard hat, steel-toe footwear, and emergency escape respirator. Ability to distinguish colors and interpret laboratory tests, indicators, labels, and instrument displays. Ability to walk, stand, bend, kneel, climb stairs and ladders, and work safely throughout the facility. #LI-Onsite We understand that candidates will not meet every single desired qualification . If your experience looks a little different from what we've identified and you think you can bring value to the role, we'd love to learn more about you. At Solenis, we understand that our greatest asset is our people. That is why we offer competitive compensation, comprehensive benefits which include medical, dental, vision & 401K, and numerous opportunities for professional growth and development. So, if you are interested in working for a world-class company and enjoy solving complex challenges, whether in the lab or the field, consider joining our team. Solenis is proud to be an Equal Opportunity Affirmative Action Employer, including Minorities / Women/ Veterans / Disabled. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability. Should you require assistance in applying to this opportunity, please reach out to Solenis Talent Acquisition at talentacquisition@solenis.com The expected compensation range for this position is between $70,250.00 and $103,026.00 plus discretionary bonuses. The exact compensation may vary based on your skills, experience and other factors permitted by law.