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ATR L Multi-Wavelength Refractometer

ATR L Multi-Wavelength Refractometer

High-precision ATR L Multi-Wavelength Refractometer for solid and liquid samples with seven wavelengths and Peltier temperature control.

Product Overview

The ATR L Multi-Wavelength Refractometer is a state-of-the-art instrument designed for precise refractive index analysis. Equipped with seven fixed wavelengths, it offers automatic dispersion measurement over the full range of visible light. The device is ideal for research and development, quality control, and various applications in pharmaceutical, petrochemical, and beverage industries. Its robust design and Peltier temperature control ensure accurate and reliable measurements.

Features & Benefits

ATR L Multi-Wavelength Refractometer

Seven Wavelengths Analysis

Full Visible Range

High Precision

± 0.00004 RI Accuracy

Temperature Control

Peltier Thermostat

Key Features

  • Automatic Dispersion Measurement Technology: Measures dispersion at seven wavelengths.
  • High Precision Refractive Index Measurement: Offers precision up to ± 0.00004 RI.
  • Peltier Temperature Control in Refractometry: Ensures accurate temperature control.
  • Versatile Applications: Suitable for solid and liquid samples, including perfumes, wine, and lenses.
  • Compliance with Standards: Meets international Pharmacopoeia, ASTM, ISO, DIN standards. 

ATR L Multi-Wavelength Refractometer Product Video

About the ATR L Multi-Wavelength Refractometer

In various industries, including pharmaceuticals, petrochemicals, and food and beverages, the precise measurement of refractive index is a critical aspect of quality control and product development. Traditional methods of refractive index measurement may lack the accuracy, versatility, and efficiency required to meet modern standards. The ATR L Multi-Wavelength Refractometer by SCHMIDT + HAENSCH addresses these challenges by offering a robust, multi-wavelength solution that caters to a wide range of applications.

Seven Wavelengths for Comprehensive Analysis

The ATR L refractometer is equipped with seven fixed wavelengths, providing a full visible range of analysis. This feature allows for automatic dispersion measurements, enabling the identification of high-quality products and the detection of potential forgeries. Whether it’s analyzing perfumes, wine, or optical materials, the seven wavelengths offer a comprehensive view of the sample’s refractive index.

ATR L Multi-Wavelength Refractometer

Precision and Temperature Control

Accuracy is paramount in refractive index measurement. The ATR L refractometer offers high precision up to ± 0.00004 RI, ensuring reliable results. The built-in Peltier thermostat ensures precise temperature control, further enhancing the accuracy of measurements. This temperature control is vital for applications that require on-point sample tempering, making the ATR L refractometer a preferred choice for professionals.

Versatility in Applications

The ability to analyze both solid and liquid samples makes the ATR L refractometer a versatile tool for various applications. From quality control of hydrophobic and hydrophilic lenses to the analysis of alcoholic beverages, pharmaceuticals, and petrochemicals, its wide-ranging applications make it a valuable asset in laboratories and industries.

Compliance with International Standards

Adhering to international standards is essential for any laboratory instrument. The ATR L refractometer is compliant with European and international Pharmacopoeia, ASTM, ISO, and DIN standards. This compliance ensures its applicability across different sectors and aligns with the regulatory requirements of various industries.

Innovative Technology and Design

The ATR L refractometer’s CCD-sensor detection technology and automatic dispersion measurement set it apart as a leading instrument in the field. Its robust stainless steel measuring unit and user-friendly design make it easy to use, even with a small sample volume of 0.3 mL. Different combinations of customer-specified wavelengths are available, adding to its customization and adaptability.



The ATR L Multi-Wavelength Refractometer represents a significant advancement in refractometry. Its combination of multi-wavelength analysis, high precision, temperature control, versatility, compliance with standards, and innovative design makes it an indispensable tool for quality control, research and development, and various industrial applications.

By addressing the pain points of traditional refractometry methods, it offers a solution that not only meets the current demands but also paves the way for future innovations in the field of refractive index measurement. Whether it’s in the petrochemical industry, medical research, or special optical liquids analysis, the ATR L refractometer is poised to perform valuable services, ensuring the highest quality standards and contributing to scientific research and technological advancement.

"The SCHMIDT + HAENSCH ATR L is an advanced multi-wavelength refractometer
offering precise measurements across the visible spectrum,
ideal for diverse research and industrial uses."


Application Note 1

Application Note 2

Application Note 3

Product FAQ's

Yes, it can measure both solid and liquid samples.

It’s used in pharmaceuticals, petrochemicals, quality control of lenses, perfumes, wine, and more.

The fixed wavelengths are 400, 450, 490, 545, 590, 660, 700 nm.

It’s a built-in solid-state thermostat that ensures precise temperature control.

Yes, it meets various ASTM, ISO, and DIN standards.

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