PTFE Crucible 50ml StonyLab High Form Cup Beaker with Lid

Description

Product Overview

The StonyLab PTFE Crucible, model PTFE-Crucible-50ml, is engineered for demanding laboratory environments where chemical inertness and thermal stability are non‑negotiable. Constructed from premium polytetrafluoroethylene (PTFE), the crucible resists attack from strong acids, bases, and organic solvents, making it suitable for a wide range of analytical and preparative procedures. Its 50 ml capacity, combined with a snugly fitting lid, provides a closed environment that minimizes moisture loss and contamination during drying or heat‑treatment steps. The crucible dimensions of 2.44 × 2.44 × 2.76 inches (approximately 62 × 62 × 70 mm) and a lightweight 2.72 oz (77 g) profile enable easy handling while maintaining structural integrity across a temperature span of –200 °C to +250 °C. The product is backed by StonyLab’s one‑year limited warranty, underscoring confidence in its durability and performance.

Usage

Laboratory researchers, quality‑control technicians, and academic scientists rely on this crucible for a variety of routine and specialized tasks. It excels in drying precipitates after filtration, where the sealed lid prevents re‑absorption of atmospheric moisture. The wide temperature range allows users to perform low‑temperature cryogenic work as well as high‑temperature calcination without risk of material degradation. Powder processing, such as grinding, mixing, or annealing of fine reagents, benefits from the crucible’s smooth PTFE interior, which reduces particle adhesion and eases sample recovery. Because the crucible is chemically inert, it can be used with aggressive reagents—including strong mineral acids, alkaline solutions, and halogenated solvents—without leaching or surface damage. Its compact size makes it ideal for batch processing in standard laboratory ovens, glove boxes, and temperature‑controlled workstations.

Why Choose Us

StonyLab has a reputation for delivering scientific glassware and polymerware that meets rigorous industry standards. This PTFE crucible is manufactured under controlled conditions that guarantee uniform wall thickness, consistent dimensional tolerances, and a defect‑free surface finish. The material’s inherent non‑stick property reduces cross‑contamination, a critical factor in high‑purity analytical work. Each crucible undergoes a multi‑stage quality inspection, including dimensional verification, leak testing, and thermal cycling, to ensure it can withstand repeated heating and cooling cycles without cracking or warping. The inclusion of a precision‑molded lid provides a reliable seal, protecting samples from ambient humidity and volatile loss. Moreover, StonyLab’s responsive customer support team is available to address any concerns, and the one‑year limited warranty offers peace of mind for laboratories that demand reliability and longevity.

Key Features

• Chemically inert PTFE body resists acids, bases, and solvents for versatile reagent compatibility.
• Wide operating temperature range (‑200 °C to +250 °C) supports both cryogenic and high‑heat applications.
• Secure, reusable lid minimizes moisture loss and protects samples during drying or heating.
• Compact 50 ml capacity with precise dimensions for easy handling and consistent batch processing.
• StonyLab one‑year limited warranty and dedicated after‑sales support ensure reliable long‑term use.

FAQ

Can the crucible be heated directly over an open flame?

No. PTFE can degrade when exposed to direct flame. The crucible should be heated using a controlled oven, hot plate, or furnace that provides uniform temperature distribution.

Is the lid made of the same PTFE material?

Yes, the lid is fabricated from the same high‑grade PTFE, ensuring a matching coefficient of thermal expansion and a tight seal that maintains sample integrity.

How many heating cycles can the crucible endure before replacement is needed?

When used within the specified temperature limits and handled according to the manufacturer’s guidelines, the crucible can safely endure hundreds of heating and cooling cycles.

What cleaning procedures are recommended after use?

Rinse the crucible with deionized water, followed by a mild detergent solution if residues remain. For stubborn deposits, a brief soak in a compatible solvent (e.g., ethanol) is effective. Rinse thoroughly and dry before storage.

Can the crucible be used for microwave digestion?

Yes, PTFE crucibles are suitable for microwave digestion provided the microwave system is designed for polymer vessels and the temperature does not exceed the material’s rated limit.