Drick DRK-Z83 Advanced Automatic Polarimeter
| Brand | Drick |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DRK-Z83 |
| Product Type | Automatic Polarimeter |
| Temperature Control | Yes (Precise Thermostatic Regulation) |
| Digital Display | Integrated High-Resolution LCD |
| Light Source | Stable 589.3 nm LED (Sodium-D Line Equivalent) |
| Optical Rotation Range | ±90° |
| Sucrose Scale Range | ±259°Z |
| Accuracy | ±0.004° |
| Repeatability | ≤±0.002° |
| Wavelength Stability | <0.1 nm drift over 8 h |
| Sample Tube Compatibility | Standard 100 mm & 200 mm pathlength cells (optional 50 mm) |
Overview
The Drick DRK-Z83 Advanced Automatic Polarimeter is an engineered solution for high-precision optical rotation measurement in regulated and research-intensive environments. Based on the fundamental principle of polarimetry—quantifying the angular deviation of plane-polarized light as it passes through optically active substances—the DRK-Z83 employs a robust double-beam optical architecture with real-time photodetector feedback and closed-loop servo control. Its stabilized 589.3 nm LED light source replicates the spectral output of sodium D-line illumination without thermal drift or filament degradation, ensuring long-term wavelength fidelity critical for pharmacopoeial compliance (e.g., USP , EP 2.2.7, ChP IV). The instrument integrates Peltier-based thermostatic control (±0.1 °C stability across 15–30 °C), enabling temperature-dependent chirality studies essential in pharmaceutical polymorph characterization, sugar isomer quantification, and synthetic chiral intermediate analysis.
Key Features
- High-accuracy measurement capability: ±0.004° absolute accuracy in optical rotation, validated per ISO 13024:2012 calibration protocols
- Dual-mode operation: Simultaneous display and calculation of both optical rotation (α) and sucrose concentration (°Z) using built-in conversion algorithms compliant with ICUMSA Method GS3/3-12
- Intelligent auto-zero and auto-calibration routines reduce operator dependency and minimize systematic drift between measurements
- Thermostatically controlled sample compartment with real-time temperature logging and alarm thresholds for out-of-spec conditions
- Modular cell holder accommodating standard 100 mm, 200 mm, and optional 50 mm pathlength cells—compatible with quartz and glass tubes meeting ASTM E2862 specifications
- Low-power LED illumination with >10,000-hour service life and negligible warm-up time, eliminating lamp replacement cycles and intensity fluctuations
Sample Compatibility & Compliance
The DRK-Z83 supports aqueous, alcoholic, and organic solvent-based solutions containing chiral molecules—including monosaccharides, disaccharides, amino acids, alkaloids, antibiotics, and synthetic enantiomers. It meets key regulatory requirements for routine QC testing in GMP-compliant facilities: full traceability of calibration records, user-accessible audit logs, and password-protected method storage align with FDA 21 CFR Part 11 data integrity expectations. Instrument validation documentation (IQ/OQ/PQ templates) and metrological traceability to NIM (National Institute of Metrology, China) or NIST-traceable standards are provided. Complies with ISO/IEC 17025:2017 clause 6.4.10 for measurement uncertainty estimation in polarimetric assays.
Software & Data Management
The embedded firmware supports USB export of raw and processed datasets (CSV format) with timestamp, operator ID, temperature, and environmental metadata. Optional PC software (DRK-PolarSoft v3.2) enables GLP-compliant report generation—including statistical summaries (mean, SD, RSD), trend charts, and multi-batch comparison overlays. All data files include digital signatures and immutable timestamps; software enforces role-based access control (administrator, analyst, reviewer) and maintains full electronic audit trails per ALCOA+ principles. Exported reports conform to PDF/A-1b archival standards for long-term regulatory retention.
Applications
- Pharmaceutical QA/QC: Enantiomeric purity verification of APIs per ICH Q5C guidelines; stability-indicating assay for chiral degradation products
- Food & Beverage: Sucrose, fructose, and invert sugar quantification in syrups, juices, and confectionery per AOAC Official Method 951.01
- Chemical Synthesis: Reaction monitoring of asymmetric catalysis and kinetic resolution processes
- Academic Research: Determination of specific rotation [α] for novel chiral compounds under controlled thermal conditions
- Biotechnology: Monitoring enzymatic hydrolysis of glycosidic bonds in polysaccharide characterization
- Regulatory Testing: Batch release testing for herbal extracts, essential oils, and natural product isolates per Chinese Pharmacopoeia Vol. IV
FAQ
What is the minimum detectable rotation angle for the DRK-Z83?
The instrument achieves a resolution of 0.001°, supported by 24-bit analog-to-digital conversion and noise-reduced signal processing.
Does the DRK-Z83 support external temperature baths?
Yes—via RS-232 interface, it can synchronize with external recirculating chillers or heating circulators for extended thermal range applications (-10 to 60 °C).
Is method validation documentation included?
Yes—comprehensive IQ/OQ protocol templates, uncertainty budget worksheets, and traceable calibration certificates are supplied with each unit.
Can the DRK-Z83 be integrated into a LIMS environment?
Via optional Ethernet module and HL7-compatible ASCII output, enabling direct data ingestion into laboratory information management systems.
What maintenance is required beyond routine cleaning?
Annual verification against certified quartz control plates (NIST-traceable SRM 1951b) is recommended; no optical alignment or lamp replacement is needed during normal operation.
