Porcelain Crucibles CHF-20-20 High-Form 20ml 20pcs by GSC

Description

Product Overview

The CHF-20-20 porcelain crucible series from GSC International represents a blend of precision engineering and material science tailored for modern laboratory environments. Each crucible is crafted from high‑density porcelain that has been meticulously glazed to create a smooth, non‑porous surface. This glazing not only enhances chemical resistance but also provides a barrier against thermal shock, allowing the crucible to sustain temperatures up to 1050 °C without cracking or warping. The high‑form design offers a 20 ml internal volume while maintaining a compact external footprint of 10 × 10 × 10 inches, making storage and handling straightforward. The set includes twenty identical crucibles, each paired with a matching lid to ensure a sealed environment during high‑temperature experiments, reducing contamination risk and preserving sample integrity.

The manufacturing process emphasizes uniform wall thickness and consistent geometry, which translates into predictable heat distribution across the crucible’s interior. This uniformity is critical when conducting quantitative analyses such as ash content determination, where even heating ensures complete combustion of organic material, leaving only the inorganic residue for accurate measurement. Additionally, the low permeability of the porcelain material minimizes moisture ingress, a key factor when performing dehydration reactions on hydrated salts. The crucibles are lightweight, weighing approximately three pounds per unit, yet they retain the robustness required for repeated heating cycles, offering excellent value for laboratories that demand both durability and precision.

Usage

These crucibles excel in a variety of laboratory applications, ranging from routine chemical heating to specialized educational demonstrations. In research settings, scientists often employ the CHF-20-20 to heat small quantities of solid reagents, such as metal powders or inorganic salts, to observe phase transitions, decomposition pathways, or catalytic behavior under controlled temperature conditions. The high‑form shape facilitates easy placement of samples without the need for additional support structures, while the matching lid helps maintain an inert atmosphere when required.

In teaching laboratories, the crucibles serve as an effective tool for illustrating fundamental concepts such as dehydration reactions. For example, students can place a sample of copper sulfate pentahydrate inside the crucible, apply heat, and observe the color change from blue to white as water molecules are expelled. This visual cue reinforces the theoretical understanding of water loss in hydrated compounds. Similarly, the crucibles are ideal for ash content analysis, where organic materials like plant matter or paper are combusted, leaving a measurable inorganic ash residue that can be weighed to determine composition.

Beyond chemical analysis, the CHF-20-20 crucibles are suitable for melting point demonstrations. Small metal fragments can be introduced into the crucible, and the gradual increase in temperature allows observers to pinpoint the exact melting point, a critical parameter in material identification and quality control. The durability of the porcelain ensures that repeated melting cycles do not degrade the crucible’s performance, making it a reliable component for ongoing instructional use.

Because the crucibles are designed to withstand high temperatures while maintaining structural integrity, they are also compatible with a range of heating equipment, including muffle furnaces, tube furnaces, and laboratory hot plates. The uniform dimensions enable seamless integration with standard laboratory racks and holders, simplifying workflow and reducing the need for custom accessories.

Why Choose Us

GSC International has a long-standing reputation for delivering high‑quality laboratory glassware and ceramic products. Our commitment to rigorous quality control begins with raw material selection; only premium porcelain grades are sourced to guarantee the necessary density and thermal stability. Each crucible undergoes a multi‑stage inspection process that includes dimensional verification, glaze adhesion testing, and thermal cycling to confirm performance under extreme conditions.

Our manufacturing facilities employ state‑of‑the‑art kiln technology that ensures consistent firing temperatures, resulting in a uniform microstructure across every batch. This consistency translates into predictable behavior during experiments, reducing variability and enhancing reproducibility of results. Moreover, the inclusion of a matching lid for each crucible is a distinctive feature that many competitors overlook, providing an added layer of protection against atmospheric contamination and sample loss.

Customer support is a cornerstone of our service model. Should you encounter any issues with the product, our technical assistance team is available to provide guidance on optimal usage, cleaning procedures, and troubleshooting. We also offer a straightforward return policy for defective items, reinforcing our confidence in the durability and reliability of the CHF-20-20 series.

Environmental responsibility is integrated into our production philosophy. The porcelain used is recyclable, and our manufacturing processes are designed to minimize waste and energy consumption. By choosing GSC International, laboratories not only benefit from superior performance but also align with sustainable practices that support broader ecological goals.

Key Features

• High‑form 20 ml capacity delivers ample space for small‑scale reactions while maintaining a compact footprint.
• Glazed porcelain construction resists temperatures up to 1050 °C, ensuring reliable performance in high‑heat applications.
• Uniform wall thickness provides consistent heat distribution for accurate quantitative analyses.
• Low permeability design minimizes moisture ingress, ideal for dehydration and moisture‑sensitive experiments.
• Comprehensive after‑sales support includes technical assistance, cleaning guidelines, and a hassle‑free return policy.

FAQ

What temperature range can the CHF-20-20 crucibles safely handle?

The crucibles are rated for continuous use up to 1050 °C. This range covers most laboratory heating applications, including combustion, dehydration, and melting point determination, without compromising the integrity of the porcelain body.

Are the crucibles compatible with standard laboratory furnaces?

Yes. Their dimensions (10 × 10 × 10 inches) are designed to fit common furnace racks and holders. The high‑form shape also allows easy placement on hot plates and muffle furnaces, making them versatile across a variety of heating equipment.

How should I clean the crucibles after use?

After cooling, rinse the crucible with distilled water to remove residual salts. For stubborn residues, a mild alkaline solution can be used, followed by thorough rinsing. Avoid abrasive cleaners that could damage the glaze.

Can the lids be used independently for other purposes?

The lids are specifically sized to match the CHF-20-20 crucible, providing a tight seal during heating. While they can be repurposed for covering small containers, their primary function is to maintain a controlled environment within the crucible during high‑temperature experiments.

What makes GSC International crucibles different from other brands?

Our crucibles combine high‑density porcelain with a precision‑applied glaze, delivering superior thermal shock resistance and chemical inertness. The inclusion of matching lids, rigorous quality testing, and dedicated customer support further differentiate our product line from competitors.