Engineered for high-purity trace analysis and harsh chemical handling, our heavy-duty PTFE (Teflon) Evaporating Dishes deliver unmatched chemical inertness and high-temperature stability. Featuring a non-stick interior, an anti-drip pouring spout, and robust construction, these dishes serve as the long-lasting alternative to fragile glass or quartz labware.
Key Features & Competitive Advantages:
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Universal Chemical Inertness: Completely resistant to HF, Aqua Regia, and strong acids/bases with zero metal ion leaching.
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Extreme Temperature Range: Operates stably from -200°C to +250°C without cracking or thermal shock risk.
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Hydrophobic & Non-Stick: Low surface friction prevents sample adhesion, ensuring maximum sample recovery.
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Anti-Drip Spout Design: Engineered for controlled, precise liquid transfer without mess or splashing.
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Unbreakable Durability: Heavy-wall PTFE machining that replaces fragile glass and quartz labware.
Material & Technical Specifications:
| Feature / Property | Specification / Value |
| Material | 100% Virgin PTFE (Polytetrafluoroethylene) |
| Operating Temp Range | -200°C to +250°C (-328°F to +482°F) |
| Chemical Resistance | Acids, Bases, Solvents, Aqua Regia, HF (Universal) |
| Autoclavable | Yes (121°C, 15 psi for 20 mins) |
| Melting Point | 327°C (620°F) |
| Dielectric Strength | >10 KV/mm |
| Surface Finish | Smooth, Burr-Free, Hydrophobic |
Applications:
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Trace Metal & Element Analysis: Ideal for ICP-MS, ICP-OES, and AAS sample preparation where background contamination must be strictly zero.
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Acid Digestion & Evaporation: Safe heating and concentration of Hydrofluoric Acid (HF), Perchloric Acid (HClO₄), and nitric acid solutions.
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Pharmaceutical & Fine Chemical R&D: Evaporation of sensitive, high-purity organic compounds and active pharmaceutical ingredients (APIs).
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Crystallization & Drying: High-temperature drying of hygroscopic powders and salts without sticking to dish walls.
Frequently Asked Questions (FAQ):
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Q: How should I properly heat this PTFE dish in the lab?
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A: Do not heat with direct open flames (such as Bunsen burners). We recommend using electric hot plates, graphite heating blocks, sand baths, or oil baths for uniform heat distribution up to 250°C.
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Q: Can I use this for hydrofluoric acid (HF) digestion and trace analysis?
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A: Yes. High-purity PTFE is the industry standard for HF digestion and ICP-MS/ICP-OES trace element analysis, as it does not contaminate samples with silicon or trace metals like glass does.
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Q: What is the best way to clean and care for PTFE labware?
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A: Soak in 10% dilute nitric acid (HNO₃) for trace cleaning, then rinse with DI water. Avoid steel wool or abrasive pads that could scratch the smooth interior finish.
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Q: Is custom sizing or OEM manufacturing available?
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A: Yes, as a direct manufacturer, we support custom dimensions, specialized wall thicknesses, and bulk wholesale ordering. Contact our support team for engineering drawings and quotes.
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