QA/QC Analyst

Private Advertiser; San Ildefonso; On-site; PHP 350,000 - 550,000; Full time

Job summary

Private Advertiser in the Philippines is seeking a QA/QC Analyst to oversee chemical and physical integrity of limestone products from raw material inspection through final delivery. The role requires a degree in Chemistry or related field, and 3–5 years of laboratory experience with proficiency in wet chemistry and instrumental analysis.

Experience with XRF/XRD is a plus. Strong attention to detail, safety discipline, and ability to communicate technical data for production teams are essential.

Qualifications

• Bachelor’s degree in Chemistry, Chemical Engineering, Metallurgy, or related science.
• Active professional license (Registered Chemist or Chemical Engineer) preferred.
• 3–5 years of laboratory experience in cement, lime, mining, or heavy mineral manufacturing.
• Proficiency in wet chemistry, titration, and instrumental analysis; XRF/XRD is an advantage.
• Knowledge of limestone geology, calcination chemistry, and physical properties of industrial minerals.
• Experience with muffle furnaces, balances, titration equipment, and automated sieving.

Responsibilities

• Inspect, sample, and evaluate incoming raw limestone against standards.
• Monitor quality of quicklime after calcination for burning efficiency.
• Perform wet chemistry, titration, and instrumental analysis.
• Test samples for carbonate contents and moisture.
• Maintain lab safety, documentation, and equipment.
• Coordinate with Production Manager on quality trends and delivery schedules.

Skills

Attention to detail

Verbal communication

Written communication

Excel

Lab instrumentation

Education

Bachelor’s degree in Chemistry

Tools

XRF

XRD

Muffle furnace

Analytical balance

Titration setup

Automated sieving

Job description

About the role

The QA/QC Analyst will oversee the chemical and physical integrity of products throughout the limestone manufacturing process, from incoming raw material inspection through calcination, laboratory analysis, quality documentation, and final client delivery. The role will provide accurate, timely quality insights to support production efficiency, regulatory compliance, product consistency, and customer satisfaction.

Key responsibilities

• Inspect, sample, and evaluate incoming raw limestone against company standards and geological specifications before production use.

• Monitor and analyse the quality of quicklime immediately after calcination to assess burning efficiency and product performance.

• Perform wet chemistry, titration, and instrumental analysis of limestone and lime samples.

• Test samples for calcium carbonate, magnesium carbonate, silica, iron oxide, moisture content, and chemical reactivity.

• Conduct physical property testing, including sieve and particle size distribution analysis.

• Calibrate, standardise, operate, and maintain laboratory apparatus, instruments, and testing machines.

• Prepare and standardise chemical reagents and solutions for quantitative and qualitative analysis.

• Monitor laboratory chemicals, glassware, and consumables to maintain adequate inventory and prevent operational downtime.

• Coordinate with the Production Manager on product quality trends, kiln performance, and delivery schedules.

• Review pre-shipment analysis reports to confirm that products meet client technical data sheets and contract specifications.

• Maintain, organise, and archive quality control reports, certificates of analysis, and daily testing logs for traceability.

• Maintain high housekeeping standards and enforce laboratory health, safety, and environmental procedures.

• Complete other technical and administrative tasks assigned by management in support of plant objectives.

What we're looking for

• Bachelor’s degree in Chemistry, Chemical Engineering, Metallurgy, or a closely related scientific discipline.

• An active professional licence or registration, such as Registered Chemist or Chemical Engineer, is highly preferred.

• Three to five years of progressive laboratory experience, ideally in cement, lime, mining, or heavy mineral manufacturing.

• Proficiency in wet chemistry, titration, and instrumental analysis; XRF or XRD experience is an advantage.

• Strong knowledge of limestone geology, calcination chemistry, and the physical properties of industrial minerals.

• Hands-on experience with muffle furnaces, analytical balances, titration equipment, and automated sieving machines.

• Strong proficiency in Microsoft Excel and Microsoft Office, with experience using Laboratory Information Management Systems for data tracking.

• Exceptional attention to detail and the ability to identify meaningful variations in chemical composition.

• Strong verbal and written communication skills, with the ability to translate technical data into practical feedback for production teams.

• A disciplined approach to laboratory safety, documentation, equipment care, and quality assurance.