Analytical Quality Assurance
Quality Assurance & Analytical Testing
Quality assurance at Queens Care Laboratories is an objective, measurable discipline. Every active compound, carrier base, and finished container is evaluated against predetermined specifications before market release.
Raw Material Fingerprinting & Purity Verification
Before entering the formulation cycle, every incoming botanical extract, antioxidant isolate, and carrier oil undergoes analytical verification. We confirm compound identity and purity through High-Performance Liquid Chromatography (HPLC) and spectroscopic assays to verify zero adulteration.
Stability & Accelerated Degradation Testing
Formulations undergo controlled environmental chamber stress tests according to ICH guidelines: long-term testing at 25°C / 60% relative humidity, and accelerated stress testing at 40°C / 75% relative humidity over 6-month cycles to monitor active stability, pH drift, viscosity changes, and phase separation.
Microbiological Limit Testing & Heavy Metals
Every batch is incubated for Total Aerobic Microbial Count (TAMC) and Total Combined Yeast/Mould Count (TYMC). In parallel, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) tests screen for traces of Lead, Arsenic, Mercury, and Cadmium.
Batch Retention & Post-Market Surveillance
Reserve samples from every serialized batch are archived in climate-controlled retention vaults for the entire shelf-life duration plus 12 months. If any consumer tolerability inquiry arises, our quality control team can retrieve the identical production aliquot for re-testing.