Fused Quartz Coverslip #No5

Finally, an optical quartz coverslip that actually stays flat under my microscope stage. The 0.50 mm thickness is noticeably more rigid than the standard glass ones I've been using. It handled a 50-minute UV exposure without any crazing or yellowing.

The 0.50 mm thickness is exactly what my setup required for UV transmission, and the optical clarity is flawless. Fit snugly into the sample holder without any rocking.

I needed a precise optical window for my UV fluorescence setup, and these coverslips transmit beautifully down to deep UV with zero distortion. The 0.50mm thickness is rigid enough to handle without bending, which made mounting my samples far easier than with standard glass.