Yoke ITS2000Z Heavy Metal Ion Analyzer

Overview

The Yoke ITS2000Z Heavy Metal Ion Analyzer is a dedicated laboratory-grade spectrophotometric instrument engineered for quantitative determination of priority heavy metal ions in aqueous environmental and regulatory compliance samples. It operates on the principle of absorbance-based colorimetric analysis, leveraging narrow-band interference filter technology and cold LED illumination to deliver stable, drift-free optical performance across multiple standardized EPA- and ISO-aligned methods. Designed specifically for water quality laboratories conducting routine monitoring of surface water, wastewater, drinking water, and industrial effluents, the ITS2000Z supports trace-level detection of hexavalent chromium (Cr⁶⁺), total chromium (Crₜₒₜ), copper (Cu), zinc (Zn), nickel (Ni), iron (Fe), and lead (Pb) — all in accordance with nationally recognized analytical protocols including GB/T 7467–1987 (Cr⁶⁺), GB/T 7475–1987 (Cu, Zn, Ni, Pb, Fe), and GB/T 7484–1987 (F⁻, applicable to method adaptation frameworks). Its optical architecture—featuring ±0.5 nm wavelength accuracy and high signal-to-noise ratio detection—ensures reproducible results compliant with ISO/IEC 17025 requirements for measurement uncertainty control.

Key Features

• 5.6-inch high-resolution color touchscreen with intuitive graphical user interface (GUI), supporting multi-language menu navigation and real-time parameter visualization
• Dual-range detection capability for select analytes (e.g., Cu and Fe), enabling both macro- and micro-concentration quantification without manual dilution or reconfiguration
• Integrated thermal printer for immediate hard-copy output of current measurements, stored datasets, and calibration reports—eliminating external peripheral dependency
• ARM9-based embedded processing unit with 512 MB internal memory, enabling rapid data acquisition, curve fitting, and on-device statistical evaluation (mean, SD, CV%)
• Cold LED light source with >100,000-hour operational lifetime and thermally stabilized narrow-band interference filters, minimizing photometric drift and reducing recalibration frequency
• Expandable calibration library: 5 pre-loaded factory curves and up to 195 user-defined curves, each supporting segmented K-coefficient adjustment for non-linear response compensation
• USB host port and RS-232 serial interface for bidirectional data transfer, firmware updates, and integration into centralized LIMS environments

Sample Compatibility & Compliance

The ITS2000Z accepts standard 10–25 mm rectangular cuvettes (10 mm pathlength recommended) and is compatible with filtered, clarified, or acid-digested aqueous matrices per EPA Method 200.7 and ISO 11885 guidelines. Sample preparation follows established digestion protocols (e.g., HNO₃/HCl microwave-assisted digestion for total metal recovery) prior to colorimetric reaction. All built-in analytical methods align with Chinese national standards (GB series) and are technically equivalent to ASTM D3559 (Pb), ASTM D1688 (Cu), ISO 6636-1 (Zn), ISO 8585 (Ni), and ISO 11969 (Cr⁶⁺). The instrument’s measurement traceability is maintained through NIST-traceable reference standards, and its data integrity framework supports audit-ready documentation for GLP/GMP-regulated workflows.

Software & Data Management

Data handling is governed by an embedded real-time operating system with timestamped storage, automatic sample ID generation, and hierarchical folder organization. Each record includes metadata: date/time stamp, operator ID (configurable), method name, calibration status, and raw absorbance values at primary and secondary wavelengths where applicable. Export formats include CSV and PDF via USB drive. While native software does not implement FDA 21 CFR Part 11 electronic signature controls, the system supports third-party LIMS integration through ASCII protocol over RS-232, enabling full audit trail capture—including user login history, method modification logs, and result revision tracking—in externally managed validation environments.

Applications

• Regulatory compliance testing for municipal wastewater discharge permits (e.g., China’s GB 8978–1996, EU Urban Wastewater Treatment Directive Annex I)
• Drinking water safety verification per GB 5749–2022 and WHO Guidelines for Drinking-water Quality
• Industrial process water monitoring in electroplating, battery manufacturing, and metal finishing facilities
• Environmental impact assessment (EIA) field lab support for soil leachate and groundwater screening
• Educational use in university environmental engineering and analytical chemistry laboratories

FAQ

Does the ITS2000Z support method validation per ISO/IEC 17025?
Yes—its documented wavelength accuracy (±0.5 nm), calibrated photometric linearity (R² ≥ 0.999 over working range), and traceable reference material compatibility enable full validation of measurement uncertainty budgets.
Can custom calibration curves be exported and shared between instruments?
Yes—curve parameters (including K-coefficients, intercepts, and wavelength assignments) are exportable as encrypted .CUR files via USB and importable onto other ITS2000Z units.
Is acid digestion required for total chromium measurement?
Yes—total chromium determination requires oxidative digestion (e.g., KMnO₄/H₂SO₄ or microwave-assisted HNO₃/HCl) to convert Cr³⁺ to Cr⁶⁺ prior to diphenylcarbazide reaction.
What reagent compatibility is certified for regulatory reporting?
Lab-YY pre-formulated reagent kits are validated against GB/T standards and supplied with lot-specific certificate of analysis (CoA), ensuring batch-to-batch consistency for accredited testing.
How often must the optical system be recalibrated?
Factory calibration is stable for ≥12 months under normal use; annual verification using neutral density filters and certified absorbance standards is recommended per ISO 9001 maintenance schedules.