Fused Quartz Coverslip #No2

The thickness of 0.20 mm is spot on for my fluorescence work, and the optical clarity is genuinely flawless. They arrived well-packaged and the edges are clean, no chipping at all.

My UV microscopy setup needed these for their specific optical clarity at 0.20mm, and they fit the slide perfectly. The quartz itself feels noticeably sturdier than standard glass coverslips I've used before.

Ordered the 0.20 mm thickness for UV work and the transmission down past 300 nm is noticeably better than the borosilicate slips I was using. Edges are clean, no chipping out of the box, and they lay flat on the slide without any rocking.