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<h3>Overview</h3>
<p>A <strong>Collar Ampoule</strong> is a sealed glass vessel featuring an integrated mechanical collar for secure mounting. Constructed from high-purity borosilicate or fused silica, it withstands extreme thermal shock and chemical corrosion during vacuum or inert gas sealing processes.</p>
<h3>Application</h3>
<ul>
<li><strong>Semiconductor:</strong> Used in diffusion furnaces and epitaxial reactors for dopant delivery.</li>
<li><strong>Metalurgy:</strong> Serves as crucibles for crystal growth and alloy melting in induction heaters.</li>
<li><strong>Laboratory:</strong> Functions as reaction vessels in analytical instruments requiring hermetic containment.</li>
</ul>
<h3>Precautions</h3>
<ul>
<li><strong>Temperature:</strong> Operate within -50°C to 1200°C; avoid rapid thermal cycling.</li>
<li><strong>Pressure:</strong> Rated for vacuum up to 10⁻⁶ Torr or internal pressure below 5 bar.</li>
<li><strong>Maintenance:</strong> Inspect collars for micro-cracks before each cycle; clean with acid baths only.</li>
</ul>