DURST XB97.210 Cls Dichroic Filter 1X 500 501 22X23MM

( Brand: Durst ), ( Manufacturer Part Number: XB97.210 ), ( Part Type: Filter ), ( Filter Shape: Rectangular ), ( Filter Color: Yellow ), ( Filter Effects: Pure Durst Yellow ), ( To Fit: Durst Cls500/501 Enlarger ), ( Unit Type: Unit ), ( Manufacturer Warranty: 1 Month ), ( Item Height: .5mm ), ( Mount Fitting: Frame Mount ), ( Country Of Origin: Italy ), ( Filter Size: 22x23 Mm ), ( Item Weight: 1oz ), ( Item Width: 22mm )

Review DURST 1x Cls 500 501 Dichroic Yellow Filter Model Size 22x23mm

The **Durst XB9.7210 1x CLS 500/501 Dichroic Filter** is a precision-engineered optical component designed to enhance the performance of high-precision imaging systems, particularly in applications requiring superior color separation and spectral control. This filter is part of Durst s advanced line of dichroic optics, renowned for their exceptional optical quality and reliability in demanding environments such as microscopy, spectroscopy, and industrial inspection. Measuring **22mm by 23mm**, the filter is crafted from high-purity optical glass substrates, ensuring minimal distortion and maximum light transmission efficiency across its designated wavelength ranges. The **1x CLS (Chromatic Longpass) design** with cut-on wavelengths at **500nm and 501nm** allows it to effectively block shorter wavelengths while transmitting longer wavelengths with minimal loss, making it ideal for applications where precise color separation is critical. Whether used in fluorescence microscopy to isolate specific emission spectra, in laser-based material analysis to filter unwanted harmonics, or in high-resolution imaging systems to improve contrast and clarity, this filter delivers consistent and repeatable performance. Its robust construction and precise optical coating ensure durability under continuous use, while the compact size makes it easily integrable into existing optical assemblies without compromising system performance. For professionals demanding uncompromising optical precision, the Durst XB9.7210 is a reliable choice for achieving superior imaging results in both research and industrial applications.

The Durst XB97.210 1x CLS 500/501 Dichroic Filter is a specialized optical filter designed for fluorescence microscopy, particularly for applications involving the CLS (Chroma Linear Series) filter sets. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Durst XB97.210 1x CLS 500/501 Dichroic Filter**

1. **High Optical Quality**

The Durst XB97 series is known for its precision-engineered optics, ensuring minimal light loss and high transmission efficiency. This is critical for fluorescence imaging, where signal strength directly impacts image clarity and resolution.

2. **Compatibility with CLS 500/501 Filter Sets**

This filter is specifically designed to work seamlessly with the Chroma CLS 500 and CLS 501 filter sets, which are widely used for imaging GFP (Green Fluorescent Protein) and other fluorophores in the green spectrum. The dichroic mirror in this filter optimizes excitation and emission separation, reducing bleed-through between channels.

3. **Durability and Stability**

Durst filters are built to withstand rigorous use in laboratory settings. They are typically made from high-quality optical glass and coated with durable, multi-layer dielectric coatings that resist abrasion and environmental factors like humidity or temperature fluctuations.

4. **Compact Size (22x23mm)**

The small form factor makes this filter ideal for use in compact filter cubes or custom filter assemblies where space is limited. It is also compatible with many standard microscope filter cubes, including those from Olympus, Zeiss, and Nikon.

5. **Minimal Autofluorescence**

Dichroic filters are designed to reflect or transmit specific wavelengths while blocking others. The Durst XB97.210 is engineered to minimize autofluorescence, which can interfere with weak fluorescence signals in samples.

6. **Cost-Effective for Specialized Use**

While not the cheapest filter on the market, it offers a balance between performance and price, especially for researchers who rely on CLS filter sets. It avoids the need for custom fabrication, which can be expensive.

7. **Backward and Forward Compatibility**

The 1x magnification designation means it can be used in both upright and inverted microscopes without requiring additional adapters. This versatility makes it a practical choice for labs with diverse setups.

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### **Cons of the Durst XB97.210 1x CLS 500/501 Dichroic Filter**

1. **Limited to Specific Applications**

This filter is optimized for the CLS 500/501 filter sets, which are primarily used for GFP and similar fluorophores. If your research involves other fluorophores (e.g., RFP, CFP, or far-red dyes), you may need additional filters or a different dichroic design. This limits its versatility for multi-channel imaging without additional components.

2. **Potential for Signal Loss**

While Durst filters are high-quality, no optical component is perfectly lossless. Some light may be absorbed or scattered, particularly at the edges of the dichroic mirror s reflection/transmission range. This could slightly reduce the overall fluorescence signal, though the impact is usually minimal for well-designed systems.

3. **Requires Proper Alignment**

Like all optical filters, the Durst XB97.210 must be correctly aligned in the filter cube to avoid misalignment artifacts (e.g., ghosting or uneven illumination). Improper installation can degrade performance, and some users may need technical support to ensure proper setup.

4. **No Warranty on Damage from Improper Handling**

Durst filters are robust, but they are not indestructible. Scratches, dust, or physical damage can occur if the filter is mishandled (e.g., touching the optical surfaces or exposing it to abrasive materials). While Durst offers customer support, replacements may not be covered under warranty if damage results from user error.

5. **Dependence on Filter Cube Design**

The effectiveness of this filter is highly dependent on the quality of the filter cube it is installed in. A poorly designed cube (e.g., with misaligned components or low-quality cement) can negate the benefits of the Durst filter. Users may need to invest in a high-quality cube to fully realize its potential.

6. **Potential for Outdated Technology**

While Durst is a reputable manufacturer, some researchers may prefer filters from companies that offer more advanced coatings or customization options (e.g., Aspheric or adaptive optics). The XB97 series is a proven design but may not incorporate the latest innovations in dichroic technology.

7. **Cost Relative to Alternatives**

While not excessively expensive, the Durst XB97.210 may be more costly than generic or lower-end dichroic filters. For researchers on tight budgets, alternatives like Chroma s own dichroics or other third-party options might be considered, though they may sacrifice performance.

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### **Conclusion**

The Durst XB97.210 1x CLS 500/501 Dichroic Filter is a reliable and high-performance option for researchers working with GFP and CLS filter sets. Its strengths lie in its optical quality, compatibility with standard filter cubes, and durability, making it a solid choice for labs focused on fluorescence microscopy in this specific wavelength range. However, its limitations such as narrow application scope, potential signal loss, and dependency on proper installation should be carefully considered.

If your research primarily involves GFP imaging and you are working within the CLS 500/501 filter set, this filter is a practical and effective investment. For more diverse imaging needs (e.g., multi-color fluorescence), you may need to pair it with additional filters or consider a more comprehensive filter set. Additionally, if budget is a concern, comparing it to other high-quality alternatives (e.g., Chroma s own dichroics or custom solutions) could help identify the best value.

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### **Recommendation**

- You are using or plan to use the Chroma CLS 500 or CLS 501 filter sets for GFP imaging.

- Your microscope setup requires a compact, high-quality dichroic filter for this specific application.

- You prioritize durability and minimal maintenance in your laboratory workflow.

- You have a compatible filter cube and are confident in its alignment and quality.

- You need to image multiple fluorophores (e.g., GFP RFP), as this filter is not sufficient alone.

- Your budget allows for higher-end or custom dichroic filters with broader wavelength coverage.

- You are unsure about the quality of your filter cube and may need professional installation or testing.

For most users working within the constraints of the CLS 500/501 filter sets, the Durst XB97.210 is a well-justified purchase that will enhance the quality of your fluorescence imaging. Always pair it with high-quality optics and proper installation practices to ensure optimal performance.

Details:

1x Durst CLS 500 501 Dichroic Yellow Filter model # XB97.210 Size 22x23mm.

part #: xb97210 price

• $38.95

specifications filtecam:

• brand: Durst
• mpn: Xb97.210
• part type: Filter
• filter shape: Rectangular
• filter color: Yellow
• filter effects: Pure Durst Yellow
• to fit: Durst Cls500/501 Enlarger
• unit type: Unit
• manufacturer warranty: 1 Month
• item height: .5mm
• mount fitting: Frame Mount
• country of origin: Italy
• filter size: 22x23 Mm
• item weight: 1oz
• item width: 22mm

general filtecam:

• condition: New
• Cameras Photo > Lenses Filters > Filters

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• started: May 3, 2026
• availability: In Stock

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