Introduction
A polarimeter is an instrument used to measure the optical rotation of a substance, which is the angle by which the plane of polarized light is rotated when it passes through an optically active sample, and it is used to determine the concentration, purity, and identity of optically active compounds in chemistry, pharmacy, and the food industry. In operation, light from a source is passed through a polarizer to produce plane-polarized light, which then passes through a sample cell containing the solution of the optically active substance; if the substance is optically active, such as sugars, amino acids, and many pharmaceutical compounds, it rotates the plane of polarization, and the instrument measures the angle of rotation with an analyzer, and the measured rotation is used to calculate the specific rotation of the substance, which is a characteristic physical property, and the concentration of the solution, using the relationship between rotation, path length, concentration, and specific rotation. Polarimeters are used in the pharmaceutical industry for quality control of chiral drugs and raw materials, for determining the purity and optical activity of compounds; in the food and beverage industry for measuring the sugar content of solutions, such as syrups and juices, by polarimetry; in the chemical industry for characterizing optically active compounds; in research for studying molecular structure and stereochemistry; and in clinical and forensic laboratories, and they are available as manual and automatic instruments, with features such as digital displays, wavelength selection, and temperature control. With their ability to measure optical activity, polarimeters are essential instruments for analyzing optically active substances.
Manual Polarimeter LPMR-T2010
Manual Polarimeter with with 589 nm filter works as light source. This analytical equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high p...
Automatic Polarimeter LPMR-T2047
Automatic Polarimeter features a temperature control accuracy of ± 0.1℃, ensuring that sample temperature remains highly stable during measurements. It has a high-temperature resolutio...
Automatic Polarimeter LPMR-T2046
Automatic Polarimeter offers a minimum reading of 0.0001°, allowing the device to detect and display extremely small variations in rotation. It has multiple measurement modes for quick ...
Automatic Polarimeter LPMR-T2044
Automatic Polarimeter offers temperature control accuracy of ±0.1℃, ensuring that the sample temperature remains highly stable during measurements. The polarimeter provides multiple me...
Automatic Polarimeter LPMR-T2045
Automatic Polarimeter offers an optical rotation measuring fan tin of +90° for accurately capturing both small and large angular rotations. It includes digital optical rotation readings...
Automatic Polarimeter LPMR-T2043
Automatic Polarimeter features a working wavelength of 589.3nm, ensuring standardized measurement of optical rotation. The built-in Peltier temperature control maintains stability for co...
Automatic Polarimeter LPMR-T2042
Automatic Polarimeter comes with dual standard calibration pipes, ensuring reliable and consistent calibration for routine laboratory applications. Its 64GB data storage ensures efficien...
Automatic Polarimeter LPMR-T2040
Automatic Polarimeter provides a measuring range of ±90° for optical rotation, ensuring reliable analysis. It supports sugar content measurement up to 259°, making it suitable for var...
Automatic Polarimeter LPMR-T2041
Automatic Polarimeter features a temperature control system that maintains stability between 10°C to 60°C with an accuracy of ±0.03°C. Its optional minimum reading of 0.0001° enable...
Automatic Polarimeter LPMR-T2031
Automatic Polarimeter offers an optical measurement range of 90°, along with an extended range of 259° Z for sugar solutions. It operates at a wavelength of 589.44 nm which detects and...
Automatic polarimeter LPMR-T2030
The automatic polarimeter comes with 7 inch touch screen & long-life peltier temperature control system ensures accurate readings. Polarimeter is used across sugar, pharmacy, food & chem...
Semi-T20utomatic Polarimeter LPMR-T2020
Semi-automatic polarimeter comes with 5.6 inch touch screen, has one touch reset function to automatically restore the polarimeter to the original settings. The long-life with 589 nm fil...
Manual Polarimeter LPMR-T2012
Manual Polarimeter with 7 inch touch screen display is upgraded to ± 89.99° and ±259°Z scope of measurement. With four types of optical measurements, it determines concentration, con...
Manual Polarimeter LPMR-T2010
Polorimeteter is an optical instruments which comes with 589nm standard sodium lamp and (-180) °C to 180 °C measurement range for determining the concentration of the optical active su...
Manual Polarimeter LPMR-T2011
Manual Polarimeter with with 589 nm filter works as light source. This analytical equipment is designed to meet the rigorous requirements of modern laboratory operations, ensuring high p...
Standards
GB/T 613-2007-Chemical reagent-General method for the determination of specific optical rotation
Complies with the above standards, but is not limited to them.
Features
1. Polarimeter for measuring optical rotation of optically active substances.
2. Precision polarimetric measurement for concentration and purity determination.
3. Suitable for pharmaceutical, chemical, food, sugar and educational laboratories.
4. Includes polarimeter unit, sample tube, sodium lamp or LED and operation manual.
5. Supports specific rotation, concentration and optical purity measurement.
FAQ
Q1: What testing scenarios is this polarimeter mainly applied to?
A: The polarimeter is used in pharmaceutical manufacturing, chemical analysis, food and beverage testing, sugar industry, essential oil analysis and educational laboratories to measure the optical rotation of optically active substances including sugars, amino acids, pharmaceuticals, essential oils and chiral compounds. It supports pharmaceutical product purity and concentration testing per pharmacopoeial requirements, sugar content and quality analysis in food and beverage, chemical compound optical purity determination, essential oil and fragrance analysis, chiral compound characterization, and educational demonstrations of optical activity. The measurement of optical rotation enables determination of concentration, specific rotation and enantiomeric purity of chiral substances. It is essential for pharmaceutical, chemical, food, sugar and fragrance laboratories requiring optical rotation measurement for product quality control, purity assessment, concentration determination, chiral analysis and regulatory compliance, where optical activity is a fundamental property of chiral molecules used to verify identity, purity and concentration of pharmaceuticals, sugars, amino acids, essential oils and other optically active compounds in industrial and research applications.
Q2: What standards does the polarimeter comply with?
A: The polarimeter supports methods referenced in USP, EP and ChP monographs for optical rotation, ICUMSA for sugar, ISO standards for specific rotation, and relevant GB/T standards. The hardware complies with IEC 61010 laboratory safety standards. Calibration should use certified quartz reference plates traceable to international standards.
Q3: What is the warranty period for the whole machine and key components?
A: The whole polarimeter is covered by a 12-month warranty. The optical system, detector, light source and controller are covered, while sample tubes, lamps and quartz plates are accessories or consumables. Damage from improper use, dropping or unauthorized repair is excluded. Extended service contracts are available.
Q4: Is this device difficult to operate? Is professional training required?
A: Operation requires trained analysts familiar with polarimetric measurement, sample preparation and data interpretation. We provide operation manuals, training and application support. Proper sample tube filling, temperature control, calibration and result calculation are important for accurate optical rotation measurements.
Q5: What is the typical lead-time for order delivery?
A: Standard models require 7-30 working days. In-stock units can ship within 3-7 working days. Custom configurations or large built-to-order systems may require additional time, and we confirm the exact schedule before order confirmation.
Q6: Is regular calibration required? What is the recommended calibration cycle?
A: Calibration with certified quartz reference plates recommended every 6-12 months. Routine verification with a standard before each analytical batch for regulated work. Light source intensity checked periodically. Sample tube condition verified. Temperature calibration if integrated. Full system performance verification annually.
Q7: Are supporting consumables universal?
A: Sample tubes, lamps and quartz calibration plates are available from specialized suppliers, though instrument-specific parts should be verified. Long-term consumable cost is low to moderate depending on usage.
Q8: Can I customize parameters or supporting accessories?
A: Customization includes accuracy level, light source type, temperature control, sample tube size, automation and software features. Additional sample tubes, quartz plates and accessories can be ordered separately. Custom orders extend delivery lead-time.
Q9: Does the purchase include on-site installation and commissioning service?
A: Standard delivery includes the polarimeter and accessories with an operation manual. On-site installation, calibration and training are not included for standard orders but can be arranged for quality control laboratory setup. Remote guidance is provided.
Q10: What types of samples are compatible with this equipment?
A: The polarimeter measures optical rotation of clear, transparent liquids and solutions within the concentration and path length specification. Turbid or colored samples may interfere with measurement and require clarification or appropriate wavelength. Solid samples can be measured after dissolution in appropriate solvents. Users should select appropriate sample tube path length for the expected rotation, ensure bubble-free sample filling, control sample temperature (optical rotation is temperature-dependent), calibrate with certified quartz plates, use proper solvent blanks, and report results as specific rotation with concentration, solvent, temperature and wavelength specified for reproducible comparison. The instrument should be leveled and allowed proper warm-up before measurement.
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