Overview

The Vista L2 is a transmission spectrophotometer designed to measure both color (absorbance) and haze (light scattering) in transparent and semi-transparent liquids with high accuracy and repeatability. By extending its spectral range to 710 nm, Vista L2 delivers a meaningful performance advantage in applications where both color and turbidity influence measurement results.

This extended wavelength capability moves measurement further into the near-infrared region—where absorption from most color bodies is minimal—allowing the signal to become increasingly dominated by scattering. The result is a cleaner separation between true color and haze, enabling more precise characterization of both properties within a single measurement.

Unlike traditional systems limited to 700 nm, Vista L2 provides enhanced insight into clarity, stability, and product quality without requiring separate instrumentation. This makes it a powerful, multi-dimensional analytical tool for industries ranging from beverages and edible oils to chemicals, pharmaceuticals, and beyond.

Why 710 nm Improves Measurement Performance

In liquid systems, measured absorbance is often a combination of:

• True absorption (color compounds)
• Light scattering (particles → haze)

While scattering varies with wavelength, its relative contribution increases as absorption decreases. At 710 nm, where absorption from most color bodies is minimal, the measurement is effectively “color-free” for most systems, allowing haze to be evaluated with greater purity and confidence

Because absorption spectra of most color compounds decay toward the near-infrared, even a small wavelength shift beyond 700 nm can disproportionately reduce residual absorption relative to scattering.

Performance Advantages

✔ Cleaner Signal Separation

• Minimizes interference from color absorption
• Provides a more accurate representation of haze

✔ Improved Measurement Confidence

• Reduces ambiguity in interpreting results
• Distinguishes true color changes vs particulate effects (haze)

✔ Enhanced Sensitivity to Early-Stage Instability

• Detects subtle increases in scattering before they are visible
• Supports early intervention in process control

✔ More Reliable Trend Analysis

• Enables consistent tracking of haze development over time
• Reduces variability caused by color fluctuations

Key Applications

1. Edible Oils – Chlorophyll Measurement

Vista L2 supports chlorophyll analysis aligned with AOCS Cc 13d-55:

• Wavelengths: 630 nm, 670 nm, and 710 nm

Value:

• Improved quality grading
• Better refining process control
• Reduced need for separate instruments

2. Beer – Color vs. Haze Insight 

Beer color is standardized globally using two primary methods: ASBC (used mainly in North America) and EBC (used in Europe and internationally).

• In both, color is measured at 430 nm
• Longer wavelengths (near 700–710 nm) provide sensitivity to haze

Value:

• Distinguish between:
  • Filtration issues (haze-driven)
  • Formulation changes (color-driven)
• Faster root cause analysis

Applications Beyond Beer and Edible Oils

While the value of 710 nm is well established in beer and edible oils, the same principle applies broadly:

Beverages (Juices, Soft Drinks, Functional Drinks)

• Detect pulp, sediment, or instability
• Separate clarity issues from color variations

Chemicals & Petrochemicals

• Identify contamination, phase separation, or insolubles
• Monitor product consistency in transparent or semi-transparent liquids

Pharmaceuticals & Biopharma

• Detect protein aggregation or particulate formation
• Support stability studies and quality control

Environmental & Water Analysis

• Monitor suspended solids and turbidity
• Improve differentiation between dissolved color and particulate matter

Dairy & Protein-Based Beverages

• Track protein aggregation and stability
• Distinguish between formulation changes and physical instability

Strategic Value for Customers

The extension to 710 nm transforms a traditional color measurement into a multi-dimensional analytical tool:

• Color + clarity insight from a single measurement
• Reduced need for separate haze instrumentation in routine QC
• Improved decision-making across production and quality workflows

Conclusion

Extending measurement to 710 nm is a small spectral shift that delivers a meaningful improvement in how color and haze are separated and understood. By moving into a region where absorption from most color bodies is minimal, Vista L2 reduces interference from color and enables a clearer, more reliable assessment of scattering.

For customers, this translates into more than just better data. It delivers greater confidence in decision-making. Whether monitoring product clarity, detecting early-stage instability, or ensuring consistency across production, Vista L2 provides a more accurate and complete picture of liquid quality. The ability to measure both color and haze within a single platform simplifies workflows, reduces variability, and eliminates the need for multiple instruments in routine quality control environments.

In an increasingly demanding landscape where speed, accuracy, and insight are critical, Vista L2 transforms measurement from a basic QC step into a strategic advantage.

If your application requires accurate separation of color and haze—or if you are looking to improve clarity measurement without adding complexity, Vista L2 offers a proven, forward-looking solution.

Contact HunterLab today to:

• Evaluate Vista L2 for your specific application
• Request sample testing to compare color and haze performance
• Explore how extended 710 nm measurement can improve your quality control process

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