Semisolid Rheology & Viscosity Analysis

Rheology and viscosity are key physical quality attributes that govern the manufacturability, texture, spreadability, stability, and in‑vivo performance of semisolid dosage forms including creams, ointments, gels, pastes, lotions, and suppositories. Viscosity defines flow resistance under shear, while rheological profiling characterizes non‑Newtonian behavior, yield stress, thixotropy, viscoelasticity, and structural strength. These properties directly impact dosing uniformity, patient acceptability, shelf‑life stability, and product performance during application and storage. Substandard rheological characteristics may lead to phase separation, poor spreadability, inconsistent drug release, reduced bioavailability, failed stability studies, and non‑compliance with regulatory expectations. Comprehensive rheological testing is therefore essential across formulation screening, process optimization, routine quality control, and commercial batch release.

Global Regulatory Standards for Rheology and Viscosity Testing

PharmaAnalytica’s semisolid rheology and viscosity testing adheres to globally recognized pharmacopeial standards and regulatory guidelines, supporting worldwide product registration and market approval. Our protocols comply with:

• United States Pharmacopeia (USP): <912> Viscosity, <915> Structural Strength of Semisolids, <1911> Rheological Properties
• European Pharmacopoeia (EP): 2.2.10 Viscosity, 2.2.49 Rheology
• Japanese Pharmacopoeia (JP): Viscosity and rheology test items for semisolid preparations
• ICH Q6A, FDA/EMA topical semisolid guidances, and GMP data integrity requirements: ensuring complete, traceable, and auditable data

PharmaAnalytica's Technology Platform

PharmaAnalytica's Physical Property Test

PharmaAnalytica provides one-stop rheology and viscosity testing solutions for pharmaceutical customers. Relying on standardized operating procedures, high-precision intelligent instruments and a quality management system in line with international regulations, we provide efficient, accurate and inspection-ready testing services for global pharmaceutical enterprises.

Full Regulatory Compliance

All rheology and viscosity testing projects strictly implement the current versions of USP, EP, JP and ICH Q6A. Each method is established under complete standardized operating procedures, with complete methodological verification, validation and performance verification records. The test system is fully aligned with international regulatory requirements, and the test results are widely recognized in global drug registration and market release.

Data Integrity Assurance

The laboratory operates in strict accordance with GMP management norms and takes data integrity as the core control point. We have established a complete management system for user authority, electronic records, audit trail, time stamp and full life cycle traceability of data. All test data are anti-tamper, safe and closed-loop traceable, which can provide transparent, reliable and inspection‑ready data packages to meet the requirements of global regulatory inspections.

Comprehensive Test Reports

We provide formal, standardized and regulatory‑friendly test reports that include sample information, testing parameters, raw data, statistical results (average, RSD, range), trend curves and compliance conclusions. All data is automatically stored, traceable and tamper‑evident, supporting electronic output, printing and client archiving. The comprehensive report format can be directly used for registration dossiers, stability submissions and internal quality review.

Professional Technical Support

We have a professional technical team with rich experience in rheological research, providing customers with full‑chain technical services such as formulation rheological evaluation, method selection, result analysis and abnormal problem solving. Relying on stable laboratory scheduling and efficient process arrangement, we ensure fast testing cycle while ensuring data accuracy and reliability.

PharmaAnalytica, a brand under STEMart, integrates professional technical capabilities, compliant quality management and high-performance instrument configuration to provide accurate, reliable and efficient semisolid rheology and viscosity testing services. We are committed to helping pharmaceutical customers optimize the rheological properties and stability of semisolid preparations, achieve stable and controllable product quality, and successfully pass global regulatory reviews.