Premium PTFE Watch Glass Dish

High-Purity Laboratory Grade | Outstanding Chemical Inertness & Thermal Stability

📌 Product Overview

Designed for demanding laboratory environments, the PTFE (Polytetrafluoroethylene) Watch Glass Dish provides an unmatched combination of chemical resistance, non-stick performance, and durability. Manufactured from high-purity, virgin PTFE resin with ultra-low metal background values, it serves as an indispensable tool for trace analysis, corrosive chemical handling, and general lab operations.

🔥 Key Advantages & Specifications

1. Exceptional Chemical & Thermal Resistance

• Extreme Temperature Tolerance: Performs reliably across a wide operating range from -196°C to +250°C (Cryogenic to 482°F).

• Universal Chemical Inertness: Resistant to strong acids, alkalis, aqua regia, and virtually all organic solvents.

2. High-Purity & Non-Stick Surface

• Ultra-Low Trace Element Background: Minimal dissolution or absorption, eliminating cross-contamination risks in sensitive analytical applications.

• Hydrophobic & Smooth Finish: Features a low coefficient of friction and low surface tension, allowing liquid to bead and slide off without leaving residue.

3. Precision Engineering & Durability

• Shatterproof & Long-Lasting: Unlike traditional glass, PTFE will not chip, crack, or shatter upon impact or thermal shock, ensuring worker safety and extended product lifespan.

• Uniform Wall Thickness: Delivers structural integrity and reliable stability during sample handling.

🔬 Versatile Applications

• Beaker Cover: Fits over beakers and evaporating dishes to prevent dust contamination and control evaporation while maintaining sample purity.

• Sample Container: Ideal for weighing, holding, transferring, or temporary storage of small solid powders, crystals, or liquid reagents.

• Evaporation & Drying Dish: Enhances surface area for liquid evaporation under non-direct heating methods.

• pH Paper & Reagent Carrier: Protects lab countertops from accidental corrosive drips during testing.

📐 Product Specifications & Reference Chart

⚠️ Safe Usage & Handling Precautions

• Direct Heating Limit: Do NOT expose directly to open flames, electric hot plates, or direct heating elements. For heating applications, use indirect methods such as oil baths or heating mantles.

• Temperature Threshold: Do not exceed the maximum operational temperature limit of 250°C.

• Load Capacity: Designed for lightweight samples and covering purposes. Avoid placing heavy loads or excessive pressure on the center to prevent deformation.

• Vessel Coverage: Leave a small gap or vent space when covering boiling or off-gassing liquids to avoid pressure buildup.