| Measurement Mode | Optical rotation, specific rotation, concentration, sugar content |
| Light Source | LED |
| Working Wavelength | 589.3nm / 546mm |
| Measuring Fan Tin | +90° |
| Measurement Accuracy | ±0.002° |
| Minimum Reading | 0.0001° |
| Repeatability | 0.002° (optical rotation) |
| Test Function | Single, multiple, continuous test mode |
| Temperature Control Range | 10℃ to 60℃ |
| Temperature Display | 0 to 100℃ |
| Temperature Control Accuracy | ± 0.1℃ |
| Light Transmittance | 0.05% |
| Display Mode | Touch Screen 10inches |
| User Management | Yes |
| Automatic Calibration | Yes / standard tube |
| Audit Trail | Yes |
| Electronic Signature | Yes |
| Output Mode | USB RS 232, VGA, Ethernet |
| Real Time Printing of Data | Yes, compatible with needle type printer/ thermal sensitive printer |
| Data Storage | 64G |
| Power Supply | 220V ± 22V, 50Hz ± 1Hz |
| Power Consumption | 250 W |
| Net Weight | 28 kg |
Peltier-based temperature control
Minimum Reading Resolution
User Calibration Mode
Specific Rotation Calculation
Multiple Measurement Modes
Automatic Polarimeter LPMR-A46 automatically measures the angle of rotation of polarized light. It plays a key role in pharmaceutical, food, beverage, research and chemical manufacturing for purity analysis and concentration determination.
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Available Range :
Automatic polarimeter LPMR-A30 : Four modes: optical rotation, specific rotation, concentration and international sugar content Automatic Polarimeter LPMR-A43 : Optical rotation, specific rotation, concentration, sugar content Automatic Polarimeter LPMR-A31 : Optical rotation, specific rotation, sugar degree, and concentration (Custom) Automatic Polarimeter LPMR-A40 : Rotation, specific curl, sugar content, custom formulaLabtron Automatic Polarimeter features built-in Peltier temperature control systems, offering precise readings across various temperatures. They utilize long-life LEDs as their light source, eliminating frequent replacements. Their multiple measurement modes—optical and specific rotation, concentration, and international sugar content give comprehensive analysis. Our Automatic Polarimeter comes with a wide measurement range, coupled with robust data storage and connectivity options.








Labtron supplies premium automatic polarimeter LPMR-A46. Calibration of polarimeters can be accomplished using NIST-traceable quartz plates or standard sugar solutions (sucrose/fructose) prepared at known concentrations. Quartz plates are preferred for their long-term stability, while sugar solutions offer practical verification of linear response over a range of values (turn0search2, turn0search12). Instruments are often calibrated quarterly or after key events such as lamp replacement or relocation. Calibration routines include zeroing with blank solvent, measuring standards, and comparing results against specifications. Complete records—time, operator, instrument settings, and measured values—should be logged for traceability and audit compliance, especially in regulated environments.
Labtron supplies premium automatic polarimeter LPMR-A46. When readings fluctuate, common corrective steps include: first, cleaning the optical surfaces and sample tube to remove residues or fingerprints; second, checking for air bubbles or turbidity in the sample and degassing if necessary; third, verifying that the instrument’s light source and calibration are within specification, replacing or recalibrating as needed Ensure the sample cell length is correctly entered into the system to avoid calculation errors. Environmental factors like ambient temperature swings or vibrations can also affect stability—operating the instrument under consistent lab conditions helps mitigate this. If the issue persists, running a quartz plate check and contacting technical support is advisable.
Labtron supplies automatic polarimeter LPMR-A46.While polarimeters are typically used for clear liquid samples, some models offer solid sample holders or flow-cell adapters that enable analysis of suspensions or semi-solids. For turbid solutions, the device may require sample pre-treatment such as filtration or centrifugation to remove particulates that could skew readings. This allows versatile applications beyond simple liquid assays, though sample clarity remains essential for accurate measurements.
Labtron supplies automatic polarimeter LPMR-A46.Modern models employ Peltier elements to maintain sample temperature within tight tolerances, often between 10–60?°C, minimizing drift caused by thermal variation. Temperature accuracy with resolution. This active control compensates for ambient fluctuations in non-air-conditioned environments. Some systems also support pre-heating or cooling before measurement, improving result stability and reducing waiting time.
Labtron supplies premium automatic polarimeter LPMR-A46. Key sources of error include temperature fluctuations, wavelength deviations, cell path length inaccuracies, sample clarity issues, and concentration variability. Temperature control via Peltier systems addresses thermal drift, while built-in wavelength filters ensure monochromatic light. Users input actual cell length to correct calculations, and filtered or clear samples prevent scattering errors. Regular sample and cell cleaning removes air bubbles or debris, and frequent calibration maintains overall accuracy.
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Labtron Equipment Ltd., Quatro House, Lyon Way, Camberley, Surrey GU16 7ER United Kingdom
Email: info@labtron.com Whatsapp: +44 73 4441 2688 Phone: +44 2080 043608