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Product Code G2101A1
Price £65 ex. VAT

Range of Dielectric Longpass Optical Filters

High performance filters for spectroscopy measurements

Overview | Specifications | Gallery | Related Products | Resources and Support

Longpass optical filters from Ossila for isolating regions of the electromagnetic spectrum for use in fluorescence measurements, absorption measurements, and more. Our filters have >90% transmission in the region of transmittance and are OD4 in the suppressed region (~0.01% transmission).

Each individual filter is housed in an outer ring to aid in handling and enhance the OD through prevention of scattering. The ring is labelled as longpass along with the cut-on wavelength.

For more comprehensive applications, you can buy our longpass optical filter set.


Dimension Ø25.0 mm
Thickness 4.0 mm
Optical Density 4
Longpass optical filter
Longpass filter range

Related Products

Resources and Support

Choosing a light source for your spectrometer Choosing a Light Source for Your Spectrometer

The light source you will need to use depends on the measurements you are doing.

Choosing a sample holder Choosing a Sample Holder for Spectroscopy

A designated sample holder is one of the most important pieces of equipment you need in spectroscopy.

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