Quartz glass crucible CQ-0 series

for high-temperature applications

Product overview
The fused quartz crucibles from Osmosis Scientific are laboratory vessels designed for demanding thermal processes where purity, dimensional stability and heat resistance are essential. Manufactured from high‑purity fused quartz glass, these crucibles offer an extremely low coefficient of thermal expansion and excellent resistance to thermal shock, enabling reliable use at elevated temperatures with minimal risk of cracking or deformation. The chemical inertness of fused quartz limits reactivity and contamination, preserving sample integrity during analytical preparation, ashing and high‑temperature treatments.

Key features

• Material: Fused quartz glass (high‑purity silica)
• Thermal resistance: Very high; suitable for elevated laboratory temperatures (typically up to ~1200 °C or more, depending on application)
• Design options: Available with lid or without lid
• Finish: Smooth, transparent quartz surface for easy handling and cleaning
• Shape: Cylindrical crucible with stable base
• Common uses: Ashing, fusion, drying, thermal decomposition, sample preparation for gravimetric and other analytical techniques
• Available sizes: Multiple capacities (examples: 10 ml, 15 ml, 25 ml, 50 ml, 100 ml and larger, depending on stock)

Table - Sizes and product SKUs
Crucible, Quartz – High-Temperature Transparent Quartz Crucibles
Size (mL) | Type | Pack of | SKU | Enquiry
15 | Without Lid | 4 | CQ-0015-NL | On request
25 | Without Lid | 4 | CQ-0025-NL | On request
50 | Without Lid | 2 | CQ-0050-NL | On request
100 | Without Lid | 2 | CQ-0100-NL | On request
15 | With Lid | 4 | CQ-0015-WL | On request
25 | With Lid | 4 | CQ-0025-WL | On request
50 | With Lid | 2 | CQ-0050-WL | On request
100 | With Lid | 2 | CQ-0100-WL | On request

Technical description
These crucibles combine extremely low thermal expansion with superior thermal shock resistance compared with many ceramics and alternative glass types. The inert character of fused quartz reduces the risk of sample contamination and chemical interaction, making the crucibles suitable for research, analytical chemistry, materials science, refractory sample processing and other high‑temperature laboratory workflows where sample integrity is critical.

Frequently asked questions (summary)

• How high can quartz crucibles withstand heat? Typically up to ~1200 °C or more for many laboratory applications (application dependent).
• Why choose fused quartz over other materials? Because of its very low thermal expansion, high chemical inertness and superior resistance to thermal shock.
• Are lids included? Lids are optional; customers can order crucibles with or without lids.
• What sizes are available? Multiple milliliter capacities are available to suit small sample preparation through larger batch processing.

Technical specifications

• Material: Fused quartz (high‑purity silica)
• Maximum operating temperature: typically up to ~1200 °C (application dependent)
• Chemical properties: Chemically inert with most laboratory reagents and sample types
• Thermal properties: Very low coefficient of thermal expansion; high thermal shock resistance
• Finish: Smooth, transparent surface for easy cleaning and sample removal
• Form factor: Cylindrical crucible with stable base; available with fitted lid (knob) or without lid
• Standard pack sizes: Typically 2 or 4 per pack depending on size
• Example SKUs by size/type: CQ-0015-NL, CQ-0025-NL, CQ-0050-NL, CQ-0100-NL (without lid); CQ-0015-WL, CQ-0025-WL, CQ-0050-WL, CQ-0100-WL (with lid)
• Common applications: Ashing, drying, fusion, thermal decomposition, gravimetric analysis sample preparation, refractory sample handling