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 CM1-PBS1 is a 30 mm cage cube-mounted polarizing beamsplitter designed for the 420-680 nm wavelength range. Originally released on April 3, 2009, this component reached its discontinued status on October 26, 2009, with the CCM1-PBS251 designated as the official replacement model. Submit the exact part number, quantity, and application requirements to request a formal quote for this discontinued item.
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 CM1-PBS1. Final compatibility remains subject to the machine manufacturer’s requirements and complete application data.