XRF Test Engineer

RESPONSIBILITIES:

• Instrument Calibration and Maintenance
• Responsible for calibration of X-ray spectrometers (EDXRF), including establishment of standard curves, drift correction and performance verification to ensure accurate and reliable measurement data.
• Perform daily instrument maintenance (such as inspection of X-ray tubes, detectors, and analyzing crystals), record equipment operating status and promptly handle malfunctions.
• Reference Materials and Quality Control
• Manage reference material library, select reference materials with matrices matching the samples to be tested, and optimize calibration methods to reduce matrix effect interference.
• Use control reference materials (QC) to verify calibration validity, ensuring test results meet standards such as ISO/IEC 17025.
• Data Review and Report Preparation
• Analyze calibration data, identify outliers or systematic errors, and propose improvement measures (such as adjusting excitation conditions).
• Prepare calibration reports, clearly state uncertainty evaluation results, and ensure report traceability.
• Safety and Regulatory Compliance
• Comply with radiation safety regulations (such as wearing personal dosimeters, setting up warning signs), ensuring operations meet the requirements of the "Law on the Prevention and Control of Radioactive Pollution".

SKILLS AND KNOWLEDGE REQUIRED OF THE JOB HOLDER:

• College degree or higher in Chemistry, Physics, Materials Science or related majors, or possess more than 3 years of chemical testing experience;
• Proficient in operating X-ray fluorescence spectrometers (such as equipment from MP, Bruker, Shimadzu brands), mastering instrument calibration procedures and data analysis methods;
• Capable of establishing calibration curves, performing interference corrections and calculating detection limits;
• Familiar with laboratory safety protocols and required to participate in regular safety training;
• Possess basic English reading skills to understand instrument manuals and international standards;
• Proficient in operating both wavelength-dispersive (WDXRF) and energy-dispersive (EDXRF) spectrometers, including sample preparation, calibration curve establishment and data analysis;
• Able to use professional software for spectrum analysis, background correction and quantitative analysis, solving problems such as spectral overlap and interference;
• Understand the importance of reference material library and select appropriate calibration methods based on sample types (such as solid, powder, fused bead);
• Regularly perform instrument drift calibration and use control reference materials (QC) to verify curve accuracy, ensuring long-term testing stability;
• Familiar with interference factors such as matrix effects and mineral effects, able to optimize detection accuracy by adjusting excitation conditions or analyzing crystals;
• Design preparation schemes for different samples (such as metals, ores, coatings) to ensure surface smoothness and particle uniformity, reducing testing errors;
• Able to quickly identify instrument problems (such as X-ray tube aging, spectrometer drift) and take maintenance measures;
• Calibration technicians must possess both theoretical knowledge and practical experience, capable of handling complex samples, optimizing calibration processes, and ensuring data accuracy and repeatability. It is recommended to screen candidates through practical assessment of their standardized operations, problem-solving and data analysis capabilities;
• Willing to work overtime and accept short-term business trips;
• Possess teamwork awareness and concept.

About Us - Malvern Panalytical, Micromeritics And SciAps.
Together we are a powerful and highly complementary combination of market leading technologies.

We are the toolmakers for the world's most innovative companies, academic institutions, and government laboratories. We are their partners in discovery.

Malvern Panalytical
instruments analyze the chemical, physical and structural nature of materials, from proteins to polymers and semiconductors to minerals. Our leading technologies measure particle size, shape, concentration and zeta potential, biomolecular interactions and stability, elemental concentrations and crystallographic structure.

Micromeritics
manufactures systems for the characterization of particles, powders, and porous materials for a wide- range of end markets including catalysts, chemicals, building materials, clean-tech and battery. Our leading technologies measure surface area, porosity, density, adsorption and particle activity.

SciAps
specializes in portable X-ray fluorescence (XRF), laser-based (LIBS) and near-infrared (NIR) analyzers to measure any element in any environment. SciAps is the Center of Excellence for our handheld instruments.

We have a global footprint with R&D and manufacturing sites in North America, Europe, and Asia.

We are more than 2,500 employees in a customer-focused organization with sales and service offices in 20 countries, all committed to delivering expert and responsive customer support.

Part of Spectris plc, a publicly traded FTSE 250 company, Spectris combines precision with purpose, delivering progress for a more sustainable world. Precision is at the heart of what we do – our leading, high-tech instruments and software equip our customers to solve some of their greatest challenges to make the world cleaner, healthier and more productive.

**Malvern Panalytical, Micromeritics & SciAps

Your Partners in Discovery**
Malvern Panalytical, Micromeritics and SciAps, part of the Spectris Group, are committed to a diverse and inclusive culture where everyone can thrive and achieve a fulfilling career. Changing the world isn't something you can do on your own, or with a single way of thinking; it takes a wide collection of experiences, stories, knowledge, and expertise. We encourage applications from underrepresented individuals and people with diverse backgrounds. Although we always select the most qualified applicant for each role and make all decisions without regard to race, sex, age, or any other protected class, we are an inclusive, equal opportunity organization that prizes diversity. Your unique perspective is important to us.