Desiccator with PC Lid and PP Tray

Updated: 2026-08-05

Overview

The dessicator PC cover PP tray is a specialized laboratory container combining a polypropylene (PP) base tray with a polycarbonate (PC) transparent lid. Designed to maintain dry conditions for sensitive materials, it features an airtight sealing mechanism often enhanced with silicone gaskets. The PP construction ensures chemical resistance against most laboratory reagents, while the PC cover provides durability and clarity for visual inspection without compromising the sealed environment. Commonly used in analytical laboratories, pharmaceutical research, and electronics manufacturing, these trays are stackable for space efficiency. Standard sizes range from 100mm to 300mm in diameter, with customization options for industrial-scale applications. The product meets ISO 9001 and ASTM E115 standards for laboratory equipment.

Physical and Chemical Properties

The PP tray component exhibits excellent resistance to acids, alkalis, and organic solvents up to 80°C, with a heat deflection temperature of 100°C. Its low moisture absorption rate (<0.01% over 24 hours) makes it ideal for hygroscopic samples. The PC cover offers superior impact resistance (250–300 J/m notched Izod) and maintains 90% light transmission for visibility. Material compatibility is critical—PP withstands concentrated hydrochloric acid but degrades with chlorinated solvents, while PC is vulnerable to acetone and ammonia. The assembly typically maintains <5% relative humidity when used with desiccants like silica gel. Weight capacity varies from 2–10kg depending on wall thickness (usually 3–5mm).

Main Applications

Primary use cases include pharmaceutical powder storage where moisture content must remain below 1%, electronics component drying to prevent oxidation, and reference standard preservation in analytical labs. In quality control environments, these trays protect calibration weights and optical lenses from atmospheric humidity. Industrial applications extend to food testing (water activity measurement), nanotechnology (nanoparticle storage), and aerospace material testing. Specialized versions with nitrogen purging ports are used for oxygen-sensitive compounds. The medical field employs sterilizable PP/PC trays for dental impression storage and diagnostic reagent preservation.

Safety and Storage

Always inspect the silicone gasket for wear—a compromised seal can allow 10–15% humidity ingress per day. PC covers require protection from UV exposure to prevent yellowing; amber-tinted versions are available for light-sensitive contents. Never autoclave assembled units (PP and PC have different thermal expansion rates). Store trays horizontally to prevent warping, with desiccant packs placed beneath the lid. For flammable materials, use models with static-dissipative PP (surface resistivity 10^6–10^9 ohms). In case of chemical spills, immediately disassemble and clean components with isopropanol, avoiding abrasive scrubbing that could scratch viewing surfaces.

B2B Procurement Guide

For bulk purchases (50+ units), request material certificates verifying PP meets ISO 19069-2 and PC complies with ISO 7391-2. Key specifications to confirm include lid clamping force (≥15N for reliable sealing), vapor transmission rate (<0.05 g/m²/day), and dimensional tolerances (±0.5mm). Leading manufacturers offer color-coding options for batch differentiation and RFID tag slots for inventory tracking. Consider modular systems with interchangeable components for scalability. MOQs typically start at 100 units for standard sizes, with 8–12 week lead times for custom designs. Always request samples to test compatibility with your specific desiccants (e.g., molecular sieves vs. silica gel).