Overview
A test sample dish is an essential laboratory tool designed to hold samples during analytical or experimental procedures. These dishes are widely used in chemistry, biology, pharmaceuticals, and materials science. They come in various shapes and sizes, including flat-bottomed dishes for spectroscopy or deep dishes for heating. The choice of material depends on the application, with glass and quartz being common for optical analysis.
Structure and Working Principle
Test sample dishes are typically shallow, open containers with a flat or recessed base to ensure stability. Some designs include lids to prevent contamination or evaporation. Their working principle is straightforward: they provide a stable, inert surface for samples, preventing reactions with the container material. High-quality dishes ensure minimal interference with test results.
Key Features
Chemical resistance is crucial, as many samples are corrosive or reactive. Borosilicate glass and quartz offer excellent resistance to acids and bases. Heat resistance is another key feature, especially for applications involving high temperatures. Ceramic and metal dishes can withstand extreme conditions, making them suitable for furnace use.
Application Areas
Test sample dishes are indispensable in spectroscopy, where they hold liquid samples for UV-Vis or IR analysis. They are also used in thermal gravimetric analysis (TGA) and sample preparation for microscopy. In industrial settings, they assist in quality control by holding materials for testing durability, composition, or purity.
Maintenance and Precautions
Proper cleaning is essential to avoid cross-contamination. Glass and quartz dishes should be soaked in detergent or acid solutions, then rinsed with distilled water. Avoid sudden temperature changes to prevent cracking. Store dishes in a clean, dry environment to maintain their integrity.
B2B Procurement Guide
When purchasing test sample dishes in bulk, consider material compatibility with your lab's common reagents. Verify dimensions and capacity to match experimental requirements. Reputable suppliers should provide certifications for material purity and chemical resistance. Compare prices and lead times for cost-effective procurement.
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