Confirm the exact configuration
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.

Thorlabs
The Thorlabs BSF20-C1 is a discontinued UV Fused Silica beam sampler for beam pick-off featuring a 2-inch diameter and an 8 mm thickness, operating within the 1100 to 1600 nm wavelength range. Released on September 3, 2003, and discontinued on October 9, 2009, this component has been officially replaced by the BSF20-C model. Submit the exact part number, quantity, and application requirements to request a quote for available inventory.
Industrial and obsolete parts are priced per enquiry: the final price depends on available stock, condition, quantity, and your delivery destination, so a fixed list price would be misleading. Request a quote and we confirm current pricing, lead time, and sourcing options — including hard-to-find and discontinued Thorlabs references — within one business day.
For a faster response, include quantity, condition, and delivery destination.
Verified configuration
Engineering context
Use the manufacturer part number and model code—not appearance alone. Connection, size, material, voltage, pressure, seal, and control options can differ within the same product family.
Provide quantity, delivery country and ZIP/postal code, required condition, target date, and photographs of the existing nameplate when available.
Our sourcing response is prepared against Thorlabs BSF20-C1. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.