In gold assay laboratories, precision is everything. From sample preparation to final analysis, every tool plays a vital role in guaranteeing precise and repeatable results. The sample trays are one of the most neglected yet crucial parts of this procedure. The right trays not only increase workflow efficiency but also maintain the integrity of each sample.
At Mechelec, we provide a complete range of sample trays and related tools designed for professional fire assay laboratories worldwide.
Why Sample Trays Matter in Gold Assay Laboratories
Gold assay laboratories require tools that can withstand extreme conditions while delivering consistent results. Sample trays are used throughout the assay process to:
- Organize and safely transport samples
- Withstand high temperatures during melting, annealing and seperation
- Prevent contamination or spillage
- Improve traceability and workflow efficiency
Choosing the right trays for each stage of the process is critical for maintaining accuracy and compliance with industry standards.
Types of Sample Trays Offered by Mechelec
ALUMINIUM SAMPLE TRAYS

This sample tray is engineered for precision, durability, and ease of use, making it an essential tool for laboratory professionals. Crafted from high-grade aluminum, this tray is ideal for weighing, drying, and preparing samples in scientific, industrial, and quality-control environments.
Key Features & Benefits
- High-Temperature Resistance: Withstands heat without warping, perfect for use in drying ovens and thermal processes.
- Corrosion-Resistant Design: Maintains structural integrity and performance, even under demanding conditions.
- Lightweight & Easy Handling: Simplifies frequent transfers and repetitive lab tasks.
- Smooth, Clean Surface: Minimises sample loss and ensures accurate weighing.
CRUCIBLE TRAYS

Our Crucible Trays are engineered to provide secure handling and support for crucibles during high-temperature laboratory operations. Whether you are conducting fire assays, metallurgical testing, or other heat-intensive procedures, this tray ensures stability, thermal resistance, and long-lasting durability.
Key Features & Benefits
- Heat-Resistant Construction: Built from refractory materials to withstand extreme temperatures without warping or cracking.
- Enhanced Safety: Prevents damage to crucibles and work surfaces, reducing operational risks in high-heat environments.
- Versatile Compatibility: Accommodates various crucible sizes, making it suitable for different workflows.
- Stable Design: Even spacing and firm support reduce the risk of spills or sample loss during handling.
- Easy Maintenance: Smooth finish allows for quick cleaning, ideal for high-throughput laboratories.
ANNEALING BUTTON TRAYS

The Button Tray is an essential tool for organizing and securing precious metal beads after cupellation. Specifically designed for fire assay and refining laboratories, this tray ensures accurate handling, separation, and tracking of gold, silver, and other metal buttons during analysis or storage.
Key Features & Benefits
- Heat-Resistant & Chemical-Resistant: Built for durability and stability in demanding laboratory conditions.
- Multiple Cavities for Organized Storage: Each slot keeps metal buttons separate to prevent cross-contamination or loss.
- Optimized for Post-Cupellation Handling: Supports proper cooling of hot samples, protecting surrounding surfaces.
- Streamlined Sample Tracking: Spaced cavities simplify labeling, identification, and traceability in high-throughput environments.
- Versatile Sizing Options: Available in multiple sizes to suit different sample types and volumes.
ANNEALING STRIP TRAYS

The Annealing Strip Tray is a durable, high‑performance tool engineered specifically for fire assay laboratories. It is designed to safely hold and support samples during the annealing stage, an essential step that softens and stress‑relieves metal materials after cupellation or melting.
Key Features
- High‑temperature resistance: Manufactured from premium refractory material, the tray maintains its structural integrity and thermal stability, even under extreme temperatures.
- Durable and reliable: Withstands repeated heating and cooling cycles without warping or cracking, ensuring consistent performance over time.
- Accurate results: Smooth surface allows even heat distribution, reducing sample variability and enhancing analytical precision.
- Laboratory‑friendly design: Fits standard muffle furnaces and integrates seamlessly with other annealing equipment, minimizing contamination risks.
- Low maintenance: Easy to handle, clean, and maintain, offering long operational life and dependable performance.
How to Select the Right Sample Tray
When selecting a sample tray, consider:
- Workflow Volume: Small trays for low-volume labs and larger trays for higher output environments.
- Material: Ensure trays are heat- and corrosion-resistant for fire assay conditions.
- Compatibility: Match tray size and design to your equipment and processes.
- Durability: Choose trays designed to withstand repeated use.
Why Choose Mechelec?
When it comes to fire assay equipment, quality and reliability are non‑negotiable. At Mechelec, we combine years of industry experience with precision engineering to deliver tools that meet the highest standards of performance and durability.
Leading gold assay laboratories worldwide trust our products because we design each tool with input from industry professionals who understand real-world challenges.
We use high-grade materials and enforce strict quality control to ensure every Mechelec product performs reliably under the extreme conditions of fire assay laboratories.
We provide more than just sample trays. Our full range of equipment – including crucibles, cupels, cupellation furnaces, and other assay and hallmarking equipment offers everything you need for a seamless workflow.
We design our equipment to deliver repeatable accuracy, so every test consistently meets the precision standards required by professional assay laboratories.
Explore Mechelec’s range of aluminum sample trays, crucible trays, annealing strip trays, Button trays and parting trays designed for precision and reliability in every assay stage. Contact us today to get a quote or to know more.