• Graph showing the transmission rate on the y-axis against wavelength in nanometers on the x-axis for a bandpass filter with a central wavelength of 425nm and a bandwidth of 50nm.
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BP425-50 Bandpass Filter(CWL=425nm,FWHM=50nm)

BP425-50 Bandpass Filter(CWL=425nm,FWHM=50nm)

PN:SO3010135

$55.00 USD
$55.00 USD
Sale Sold out
Shipping calculated at checkout.
Center Wavelength (CWL) // FWHM
Optical Density // Peak Transmission (Tpk)
Dimension

Premium Violet-Blue Fluorescence Bandpass Filter - BP425-50

Achieve exceptional fluorescence excitation with our BP425-50 Bandpass Filter, precisely engineered for 425nm applications and optimized as an excitation filter for GFP (Green Fluorescent Protein) imaging.

Technical Specifications:

  • Center Wavelength (CWL): 425nm - Perfect for violet-blue excitation applications
  • Full Width Half Maximum (FWHM): 50nm bandwidth for optimal excitation efficiency
  • High Transmission Efficiency: Advanced multi-layer coatings for superior light throughput
  • OD5 Blocking: Excellent out-of-band rejection for clean excitation
  • Professional Grade: Manufactured to stringent optical standards

Key Applications:

  • GFP Fluorescence Microscopy - Ideal excitation filter
  • DAPI and other blue fluorescent dye excitation
  • Live cell imaging and biological research
  • Flow cytometry and cell analysis
  • Immunofluorescence assays
  • Scientific research instrumentation
  • Machine vision and inspection systems

Why Choose BP425-50?

The BP425-50 is specifically optimized for fluorescence excitation applications, particularly as an excitation filter for GFP (Green Fluorescent Protein) imaging. The 425nm wavelength provides efficient excitation while the 50nm bandwidth ensures optimal light collection for maximum fluorescence signal.

This filter is essential for researchers working with GFP-tagged proteins, DAPI nuclear staining, and other violet-blue excitation applications where precise wavelength control is critical for high-quality fluorescence imaging.

Trust SyronOptics for precision fluorescence filters that deliver brilliant excitation performance in your most demanding applications.

Transmission & OD Data

The transmission curve is typical. Actual data may vary from lot to lot, you can request the raw Transmission and OD data from us.

Copy the link of the product page and send email to shop@syronoptics.com to get raw data.

Shipment & Delivery

For stocked products, shipment will usually be made within 5 working days after order.

For customized products, shipment will usually be made within 4-8 weeks after order.

Return & Refund

Stocked Product are eligible to return within 7 days after receiving.

A flat rate of 35$ will be charged for returning.

Custom Sizing

Custom sizing is available for dimension under 60x60mm. Without mounting the thickness will generally ranging from 0.5-3mm.

For bigger size, contact shop@syronoptics.com for details.

Optical dicing refers to precision cutting processes used to segment optical materials, particularly those with specialized coatings, into smaller functional components while maintaining their structural and optical integrity. In the context of optical coating flats (flat substrates like glass, fused silica, or semiconductors coated with anti-reflective, dielectric, or other optical layers), dicing ensures these coated substrates meet exact dimensional requirements for applications in photonics, lasers, sensors, and semiconductor devices.

Methods

  • Saw Dicing: Diamond-coated blades for clean cuts with minimal chipping.
  • Laser Dicing: Non-contact ablation for delicate or brittle materials, reducing mechanical stress.
  • Plasma Dicing: Dry etching for ultra-fine features, ideal for advanced semiconductor wafers.

Price

Dicing Service will generally cost from $50 to $125 per piece. Depending on the accuracy and size you are requesting.

Packaging

If you need generic packaging, please leave "Generic" in the note when placing order.

In such case:

  • No Branding information in Packaging Materials
  • All Documentation will be generic
  • We will send image of the parcel to you before fulfilling shipment
  • You can use your document template for the shipment.

Feel free to contact shop@syronoptics.com for details.

Payment

Payment could be done online with Credit Card, Apple Pay, Google Pay, Wechat Pay and Alipay

For amount under $200 you can request to make payment within 7days after receiving the order.

View full details

Fequently Asked Questions

What are the Thickness of the Optical Filters?

For Mounted Optics:

  • 6mm (by Default)
  • 3.5mm (Specified in Order Note)

For Unmounted Optics:

  • 0.5mm
  • 1.1mm
  • 2mm

(most of the unmounted optics are having thickness of 1.1mm ~ 2mm)

What is the difference between mountings?

Unmounted:

  • a bare glass optical filter

Mounted:

  • Smooth Mount for protection of the optics. No thread is there on the mount.

Metric Mount:

  • Start with M as prefix, usually seens as M25.5x0.5mm. Mostly used as camera filters

Imperial Mount (Usually Thorlabs):

  • Start with SM as prefix, usually seen SM1, SM05 etc... Mostly used in Optical system. (You will have a SM external thread to connecting to other objects)

C-Mount:

  • Very frequently used mounting. C-Mount is 1‘’-32TPI. And it is not the same thing as SM1, or M25.5x0.5mm.

Standard Mountings

Camera Mounting List

  • Our filters can be cut to match the mounting on the list. Please contact us for getting quotation.

Need any help?

Other Wavelength

UV Bandpass Filter (100-400nm)

VIS Bandpass Filter (400-800nm)

NIR Bandpass Filter (800-1400nm)