JASCO P-2000 Automated Polarimeter
| Brand | JASCO |
|---|---|
| Origin | Japan |
| Model | P-2000 |
| Light Source | Sodium lamp (D-line, 589.3 nm), optional mercury lamp and halogen lamp |
| Temperature Control | Peltier-controlled sample holder |
| Display | Digital LCD with 0.0001° resolution |
| Measurement Range | ±90° |
| Measurement Accuracy | ±0.002° |
| Measurement Precision | 0.002° |
| Response Speed | 6°/s |
| Compliance | JP XVII, USP <781>, EP 2.2.7, FDA 21 CFR Part 11 (software-enabled audit trail) |
Overview
The JASCO P-2000 Automated Polarimeter is a high-precision optical instrument engineered for the quantitative determination of optical rotation—defined as the angular deflection of plane-polarized light induced by chiral compounds in solution. Based on the fundamental principle of polarimetry, the P-2000 utilizes monochromatic sodium D-line radiation (589.3 nm) as its primary reference wavelength, ensuring compliance with pharmacopoeial standards including the Japanese Pharmacopoeia (JP XVII), United States Pharmacopeia (USP ), and European Pharmacopoeia (EP 2.2.7). The system employs a double-beam optical architecture with automatic zero-point compensation, minimizing drift and enhancing long-term stability during sequential or batch measurements. Its core measurement capability spans ±90° with a digital resolution of 0.0001° and certified accuracy of ±0.002°, making it suitable for regulatory-grade analysis in quality control laboratories operating under GLP or GMP frameworks.
Key Features
- Atomic-spectrum-based light source: Primary sodium lamp (589.3 nm) with optional mercury lamp (546.1 nm) and halogen lamp for multi-wavelength verification and method development.
- Dual-source auto-switching: Integrated optical module allows seamless software-controlled switching between sodium and mercury lamps without manual realignment.
- Peltier-regulated sample compartment: Maintains temperature stability within ±0.1°C across 15–40°C range; compatible with standardized 100 mm and 200 mm pathlength cells.
- High-speed angular acquisition: 6°/second response enables rapid equilibrium detection—critical for kinetic studies of enzymatic racemization or crystallization-induced asymmetric transformations.
- iRM intelligent Remote Module: Supports standalone operation with built-in touchscreen interface, automatic recognition of installed filters, cuvettes, and accessories via RFID tags.
- Comprehensive hardware interlock: Prevents erroneous readings due to misaligned cells, open chamber doors, or unstable thermal equilibration.
Sample Compatibility & Compliance
The P-2000 accommodates standard quartz or glass polarimetric cells (100 mm, 200 mm, and custom lengths), including jacketed variants for external temperature control. It supports aqueous, organic, and viscous media—including APIs suspended in ethanol, sucrose solutions, amino acid derivatives, and natural product extracts—without requiring dilution or derivatization. All firmware and PC-based software modules comply with FDA 21 CFR Part 11 requirements, featuring electronic signatures, role-based access control, immutable audit trails, and full data integrity logging. Instrument qualification documentation (IQ/OQ/PQ protocols) is provided per ASTM E2500-13 and ISO/IEC 17025:2017 guidelines.
Software & Data Management
Control and data acquisition are managed through JASCO’s PolarSoft™ v3.x suite, a Windows 10/11-compatible application supporting automated sequence runs, calibration curve generation (linear and polynomial), and statistical reporting (mean, SD, RSD, confidence intervals). Raw angular data are stored in vendor-neutral .csv and .jdx formats, enabling direct import into LIMS platforms (e.g., LabWare, Thermo SampleManager) and statistical packages (Minitab, JMP). The software includes method validation templates aligned with ICH Q2(R2), supports user-defined pass/fail criteria for release testing, and generates PDF reports compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Applications
- Pharmaceutical QC/QA: Identity confirmation and assay of chiral active pharmaceutical ingredients (e.g., levofloxacin, esomeprazole, sitagliptin) per USP monographs.
- Biotechnology: Enantiomeric excess (ee) determination in biocatalytic reactions involving ketoreductases, transaminases, or lipases.
- Food & Beverage: Quantification of sucrose, fructose, and invert sugar in syrups, honey, and fruit juices per AOAC 951.02.
- Academic Research: Kinetic monitoring of asymmetric synthesis, chiral ligand screening, and thermodynamic characterization of helical polymers.
- Natural Products Chemistry: Absolute configuration assignment via correlation with CD spectroscopy and computational modeling (TDDFT).
FAQ
Does the P-2000 support temperature-controlled measurements below 15°C?
No—the Peltier stage operates from 15°C to 40°C. For sub-ambient work, external recirculating chillers may be interfaced via auxiliary ports, though calibration at non-standard temperatures requires revalidation.
Can the instrument store multiple calibration curves for different analytes?
Yes. PolarSoft™ permits unlimited method files, each containing unique calibration parameters, cell constants, temperature setpoints, and acceptance criteria.
Is remote diagnostics supported for troubleshooting?
Yes—via secure TLS-encrypted VNC session initiated from authorized service accounts; logs include real-time optical power monitoring, detector linearity checks, and lamp usage hours.
How is traceability maintained for regulatory submissions?
All raw data, metadata (operator ID, timestamp, instrument ID, environmental conditions), and processing steps are embedded in encrypted .jdx files and archived with SHA-256 checksums.
What accessories are required for USP-compliant sucrose assay?
A 100 mm quartz cell, NIST-traceable sucrose reference standard (SRM 84g), and JASCO-certified temperature probe (P-TP1) are recommended for full compliance with USP .
