FireflySci's Type 11 cuvette comes standard with a glass cap, which provides an airtight seal, ensured by the ground finish on the inside of the cap and the top of the cuvette.

• Hand made ensuring the highest quality optical polish with no defects
• Firefly cuvettes are guaranteed to give high optical transmission
• Fire fused to ensure the best bonding
• Several different materials available: (Optical Glass, UV Quartz, IR Quartz)
• Lightpaths from 1 mm up to 50 mm available
• Two windows optically polished

The cap is polished, which enables optical transmission.

Every cell is thoroughly inspected before leaving the factory.