Overview
The disintegration basket screen is a specialized mesh component integral to disintegration testers, which evaluate the breakdown time of oral solid dosage forms like tablets and capsules. Designed to meet pharmacopeial guidelines (USP, EP, JP), it ensures standardized testing conditions by maintaining consistent aperture sizes and structural integrity. Typically constructed from high-grade stainless steel, the screen resists chemical corrosion from test media such as water or simulated gastric fluid. Its cylindrical or basket-shaped design allows for easy integration into automated or manual testers.
Structure and Working Principle
A disintegration basket screen consists of a welded or woven mesh frame, often with a 10–25 mesh count (0.7–2.0 mm apertures), mounted on a rigid support ring. The mesh geometry ensures unimpeded fluid flow while retaining tablet fragments during testing. During operation, the basket immerses in a temperature-controlled fluid bath, oscillating vertically to simulate physiological agitation. The screen's uniform openings prevent false passes/failures by controlling particle escape rates, directly impacting test reproducibility.
Key Features
Corrosion resistance is paramount, with AISI 316 stainless steel being the preferred material due to its inertness to acidic/alkaline solutions. Electropolishing is often applied to minimize particulate shedding. Mesh precision is critical; deviations exceeding ±5% from specified sizes can invalidate tests. High-quality screens undergo laser microscopy verification to ensure compliance with ISO 3310-1 standards. Some designs include anti-jamming features to prevent capsule adhesion.
Application Areas
Primarily used in pharmaceutical QC labs for compliance testing per USP <701>, EP 2.9.1, or JP 6.09. Secondary applications include dietary supplement validation and dissolvable film testing. In R&D, screens help formulate robust products by identifying disintegration bottlenecks. Contract testing laboratories often stock multiple mesh variants to accommodate diverse monograph requirements.
Maintenance and Precautions
Post-use cleaning with purified water and mild detergents prevents cross-contamination. Ultrasonic baths may be used for stubborn residues, but abrasive scrubbing should be avoided to preserve mesh integrity. Regular inspection under magnification detects fraying or deformation. Screens showing >5% aperture variation or visible damage require replacement to maintain testing validity. Storage in low-humidity environments prevents pitting corrosion.
B2B Procurement Guide
When sourcing, prioritize suppliers with ISO 13485 certification for medical device components. Request material certificates (e.g., Mill Test Reports) confirming steel grade and mesh tolerances. Bulk purchases (10+ units) typically attract 15–30% discounts. For GMP environments, opt for screens with full traceability documentation. Lead times vary from 2–6 weeks for custom mesh configurations.
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