MR-532A Micro Raman Spectrometer

Product Introduction

The MR-532A is HM Instruments' entry-level micro Raman spectrometer, engineered to make professional-grade molecular analysis accessible to a broad range of laboratories. Built around a 532 nm excitation laser and the Hamamatsu 11639 CMOS linear array detector, this system combines proven optical components with an intuitive manual stage to deliver a straightforward Raman measurement experience without unnecessary complexity.

The 532 nm wavelength provides strong Raman scattering intensity, making the MR-532A particularly effective for analyzing inorganic materials, carbon-based nanomaterials, and crystalline minerals where fluorescence interference is minimal. With a wavenumber range of 200–4000 cm⁻¹ and spectral resolution of 7 cm⁻¹, the system covers the fingerprint and stretching vibration regions that contain the most diagnostically useful molecular information. The rack-mounted microscope with 5x, 20x, 50x, and 100x objectives enables analysis at spot sizes down to 25 μm, supporting investigations from bulk survey to single-particle characterization.

For laboratories seeking reliable Raman capabilities for routine material identification, educational instruction, or incoming quality inspection, the MR-532A provides an excellent balance of performance and value. Explore the broader micro Raman spectrometer brand comparison to understand how the MR-532A compares against international alternatives.

Applications

• Carbon nanomaterial characterization — graphene, carbon nanotubes, diamond-like carbon films
• Mineral identification and petrographic analysis in geological research
• Polymer type verification and additive detection for quality control
• Semiconductor wafer stress measurement and thin-film analysis
• Gemstone authentication and treatment detection in gemological laboratories
• Teaching and training in university spectroscopy courses
• Incoming raw material inspection for manufacturing facilities
• Failure analysis and contamination identification in industrial settings

Functional Performance and Features

1. 532 nm excitation wavelength delivers strong Raman signals for inorganic and carbon-based materials, approximately 3.5x more intense than 785 nm excitation
2. Hamamatsu 11639 CMOS detector with 2048 pixels and linearity exceeding 99.8% ensures accurate spectral measurement across the full dynamic range
3. 7 cm⁻¹ spectral resolution resolves characteristic peaks of common materials including polymers, minerals, and semiconductors
4. Wavenumber range of 200–4000 cm⁻¹ covers both fingerprint and high-frequency stretching regions for comprehensive molecular identification
5. System stability exceeding 99% over 8 hours of continuous operation after 15-minute warm-up, with laser stability above 99.9%
6. Rack-mounted microscope with four objective magnifications (5x, 20x, 50x, 100x) and 25 μm spot size for versatile sample observation and analysis
7. Signal-to-noise ratio of 500:1 in normal mode provides clear spectral features for reliable material identification
8. Integration time adjustable from 1 ms to 65 seconds, accommodating both strong and weak Raman scatterers
9. SpectrumFactory software with single acquisition, data storage, baseline correction (airPLS), database matching, and PCA clustering analysis
10. SMA905 fiber optic interface and 4 programmable GPIO outputs for flexible system integration

Main Parameters

Parameter	Value
Product Model	MR-532A
Excitation Wavelength	532 nm
Wavenumber Range	200–4000 cm⁻¹
Spectral Resolution	7 cm⁻¹
Grating	1800 gl/mm, 12.5 mm × 12.5 mm effective size, blazed at 500 nm
Detector	Hamamatsu CMOS linear array, 2048 pixels, linearity > 99.8%
Sample Stage	Manual platform
Microscope	Rack-mounted, 5x / 20x / 50x / 100x objectives
Spot Size	25 μm
Reference Price	$35,000

Technical Parameters

Parameter	Specification
Wavelength Resolution	2048 channels, 0.1 nm interval (minimum)
Signal-to-Noise Ratio	Normal mode 500:1
Acquisition Mode	Single / Continuous / External trigger
Dynamic Range	3000:1
Dark Noise	20 counts
A/D Converter	16-bit, 2 MHz (maximum)
Exposure Time	0.06 ms – 65 s
Integration Time	1 ms – 65 s
Optical Slit	25 μm (default)
Fiber Optic Interface	SMA905
Data Transfer Rate	100 fps (maximum)
Digital I/O	4 programmable digital GPIO; 1 analog output (integrated laser power controller)
External Trigger	5 ns low-latency, 5 ns–65 s programmable delay, retriggerable
Connectors	30-pin connector, including USB (480 Mbps) / TTL (3.3 V) / RS232 / RS485
System Stability	Laser >99.9%, Spectrometer >99.99%, Overall >99% (8-hour test after 15-min warm-up)

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