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Avant™ single-band filter set: Yellow Fluorescent Protein (YFP) and Venus and similar fluorophores

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This filter set is designed for use with Yellow Fluorescent Protein (YFP) and Venus and works well with other key fluorophores. The Avant™ filter set family delivers significant increases in fluorescence performance for small Stokes Shift fluorophores compared to standard filter sets. Steep spectral edges and high complementary OD blocking maximize signal while maintaining low bleedthrough and high signal to noise ratio. The new Precise Edge Placement capability ensures every filter set delivers consistent performance.

Note on spectral plots:
In the past, each shipment has included a spectral plot for every filter and every lot code in the shipment. In an effort to be more eco-friendly, we will no longer be including these plots with each shipment. If you require spectral plot data, please see here for more information.

Optical Specifications
Blocking Avant filters have blocking far exceeding OD 5 as needed to ensure a black background, even when using modern low-noise CCD cameras. The blocking is optimized for microscopy applications using our exclusive SpecMaker™ fluorescence filter design.
General Specifications
Microscope Compatibility Avant filters are available to fit Leica, Nikon, Olympus, Zeiss, and Aperio microscopes.
Optical Damage Rating Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm²) for over 500 hrs.
Physical Specifications (for standard parts – please contact us for custom sizes)
Filter size Standard
Size Standard size (fits most microscopes)
Surface Quality (Scratch-Dig) 60-40
Exciter/Emitter Orientation Arrow on ring indicates preferred direction of propagation of light.
Dichroic Orientation Reflective surface marked with part number – Orient in direction of incoming light


  • Size: Standard size (fits most microscopes)

Avant-YFP-000 is a filter set, comprised of:

Product Code Filter Role Filter Size Qty
AF01-504/24-25 Single Band Exciter 25 x 5.0 mm 1
AF01-539/27-25 Single Band Emitter 25 x 3.5 mm 1
AF521-Di01-25×36 Single Band Dichroic 25.2 x 35.6 x 1.1 mm 1


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Optical Density

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Semrock Spectral Plot Info

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