China Dish 3

Product Code : SCL-CLE-11950

The StemAids 3-inch China Dish (also known as an Evaporating Dish) is a high-performance laboratory vessel designed for the concentration of solutions and the recovery of dissolved solids through evaporation. Manufactured from premium, high-alumina chemical porcelain, it is engineered to withstand direct exposure to open flames and high-temperature ovens. The 75mm (3”) diameter is the standard size for micro-scale and semi-micro analytical chemistry, providing a high surface-area-to-volume ratio to accelerate the transition from liquid to vapor.

Technical Specifications

Key Pedagogical & Laboratory Outcomes

• Phase Transition Interface: Facilitates student understanding of Evaporation and Crystallization. Learners identify how the wide, shallow design maximizes the liquid surface area, allowing solvent molecules to escape more rapidly than in a beaker.
• Gravimetric Application: Enables the determination of Solubility and Percentage Yield; learners apply the dish to heat a solution to "dryness," allowing them to calculate the mass of the resulting solute.
• Thermodynamic Analysis: Supports the analysis of "Heat of Vaporization"; students evaluate the energy required to remove a solvent by monitoring the temperature of the basin during a steady boil.
• Purity Evaluation: Provides a platform for evaluating solid residue quality; the smooth, glazed surface prevents the sample from sticking or reacting with the vessel, ensuring a high-purity recovery for further testing.

Operational Best Practices

1. Uniform Heating: Always place the China dish on a wire gauze with a ceramic center when using a Bunsen burner to distribute heat evenly and prevent localized thermal stress.
2. Cooling Protocol: Do not place a glowing-hot dish directly on a cold laboratory bench. Use a heat-resistant mat or allow it to cool slightly on the tripod to avoid "thermal shock" fractures.
3. Spatter Control: When evaporating to near-dryness, reduce the heat to prevent "spitting" or "decrepitation" of the solid crystals as the last of the water escapes.

International Logistics & Compliance

StemAids ensures comprehensive OEM readiness for global institutional procurement:

• Packaging: Export-grade, shock-absorbent packaging. Porcelain is brittle; dishes are nested with protective interleaving and secured in reinforced cartons to ensure "zero-breakage" during maritime transit.
• Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and Thermal Stress Test reports.
• Durability: Our porcelain is fired at over 1300°C, resulting in a non-porous material that does not absorb moisture or chemicals, facilitating easy cleaning and consistent weight for analytical work.

Direct OEM Sourcing Advantages

Procuring StemAids China Dishes directly ensures vertical manufacturing control:

• Acid-Proof Glazing: Direct oversight ensures the glaze is chemically fused to the body, preventing it from "crazing" or peeling when exposed to concentrated boiling acids.
• Precision Spout Geometry: We ensure the pouring spout is sharp and well-defined to allow for the clean transfer of concentrated liquids without "run-back" down the side of the dish.
• Direct Factory Inventory: Guaranteed availability of the 3” standard size, as well as specialized deep-form basins and larger 4”/6” diameters.
• Quality Assurance: Every batch is "quench-tested" from 200°C to room temperature to ensure mechanical integrity under rapid laboratory cooling cycles.