PTFE 50ml Evaporating Dish HCl Hf High Purity Laboratory Ware

Description

This PTFE (Polytetrafluoroethylene) 50ml Evaporating Dish is the industry standard for sample digestion and evaporation in ultra-trace analysis. Engineered for extreme chemical environments, it is specifically designed to handle the harshest mineral acids, including Hydrofluoric (HF) and Hydrochloric (HCl), without leaching contaminants into the sample.

Technical Specifications

• Material: 100% Virgin PTFE (Teflon).

• Capacity: 50ml.

• Temperature Range: Continuous use from -200°C to +250°C.

• Chemical Resistance: Chemically inert to almost all reagents; ideal for use with HF, Aqua Regia, and strong bases.

• Design: Flat-bottom for even heat distribution with a precision-molded pouring spout.

Key Advantages

• Ultra-High Purity: The non-porous, hydrophobic surface ensures negligible ion leaching, maintaining the integrity of high-sensitivity ICP-MS and ICP-OES samples.

• HF Compatibility: Unlike borosilicate glass or quartz, PTFE is completely resistant to Hydrofluoric acid, making it mandatory for silicate mineral digestion.

• Non-Stick Surface: Provides excellent sample recovery; residues do not adhere to the walls, facilitating easy cleaning and preventing cross-contamination.

• Structural Integrity: Robust wall thickness prevents warping under heat and provides high impact resistance compared to fragile glassware.

Common Laboratory Uses

• Acid Digestion: Dissolving geological, environmental, or metallurgical samples in concentrated acids.

• Trace Element Concentration: Evaporating solvents to concentrate analytes before analysis.

• Crystal Growth: Controlled evaporation of corrosive solutions.

• Reagent Storage: Safe handling of high-purity acids that would etch glass containers.

Safety & Usage Tips

• Heating: Use a sand bath, water bath, or controlled hot plate. Do not exceed 250°C to avoid material degradation and the release of toxic fumes.

• Cleaning: To achieve “blank-level” purity, boil in dilute HNO3​ or $HCl$ before the first use.

• Open Flame: Never expose PTFE directly to an open flame or Bunsen burner.