Hach DR/800 Series Portable Multi-Parameter Water Quality Analyzer

Overview

The Hach DR/800 Series Portable Multi-Parameter Water Quality Analyzer is a rugged, field-deployable photometric instrument engineered for rapid, reliable quantification of key water quality parameters in diverse environmental and operational settings. Based on fixed-wavelength visible-light absorption spectroscopy (Beer–Lambert principle), the DR/800 series employs precision optical filters and solid-state photodetectors to measure analyte-specific absorbance at predefined wavelengths—420 nm, 520 nm, 560 nm, and/or 610 nm—depending on model configuration. Its design prioritizes operational simplicity without compromising analytical integrity: automatic wavelength selection and real-time calibration correction eliminate manual alignment errors, while integrated temperature compensation ensures consistent performance across ambient conditions from 0 to 50 °C. As a Class I portable instrument certified for IP67-rated ingress protection (dust-tight and immersion-resistant up to 1 m for 30 min), it meets the physical durability requirements of wastewater treatment plants, drinking water distribution networks, industrial effluent monitoring stations, and emergency response teams.

Key Features

• Three scalable models (DR/890, DR/850, DR/820) with 90, 50, and 20 pre-programmed calibration curves respectively—enabling targeted deployment based on site-specific parameter requirements.
• Automated wavelength selection and on-board calibration verification ensure traceable accuracy within ±1 nm spectral tolerance and 0–2 A photometric range.
• Multi-format reagent compatibility—including Hach TNTplus™ vials, powder pillows, and glass ampoules—minimizes preparation time and reduces operator error through standardized, lot-specific calibration.
• High-contrast LCD display with intuitive icon-driven interface supports direct readout in % transmittance, absorbance, or concentration units (mg/L, ppm, µS/cm, etc.) without external software.
• Robust housing constructed from chemically resistant polycarbonate with sealed keypad and rubberized grip; compliant with IEC 60529 IP67 and MIL-STD-810G shock/vibration specifications.
• Low-power architecture enables >2,000 measurements per set of four AA alkaline batteries under typical field use conditions.

Sample Compatibility & Compliance

The DR/800 series supports aqueous samples across potable water, surface water, wastewater, industrial process streams, and aquaculture systems. It complies with method-defined protocols aligned with EPA Methods 365.3 (phosphate), 365.4 (nitrate), 8080 (cyanide), and ASTM D1253 (residual chlorine), as well as ISO 7027 (turbidity) and ISO 6060 (COD). All factory-loaded calibration curves are generated using NIST-traceable standards and validated per Hach’s internal QA/QC procedures. The instrument satisfies GLP data integrity requirements when used with HachLink™ software, supporting audit trails, user access control, and electronic signature functionality compliant with FDA 21 CFR Part 11 Annex 11 guidelines.

Software & Data Management

Data acquisition and reporting are enabled via HachLink™ PC software (Windows-compatible), which establishes secure IR-to-RS-232 communication using the optional Data Transfer Adapter. Each stored measurement includes timestamp, operator ID (assignable), method ID, wavelength, raw absorbance, and calculated result. Export formats include CSV, Excel (.xlsx), and PDF reports with embedded metadata for regulatory submission. HachLink™ also permits firmware updates, custom curve creation (using user-supplied standards), and batch calibration validation logs—critical for laboratories maintaining ISO/IEC 17025 accreditation.

Applications

• Field-based compliance monitoring for municipal wastewater discharge permits (e.g., NH₄⁺-N, NO₃⁻-N, PO₄³⁻-P, COD, Cl₂).
• Rapid assessment of source water quality during disaster response or seasonal algal bloom events.
• Process control in drinking water treatment—chlorine residual, iron, manganese, fluoride, and hardness testing.
• Industrial pretreatment verification prior to sewer discharge (e.g., heavy metals, total phosphorus, sulfide).
• Educational and training applications where robustness, ease-of-use, and method transparency support hands-on learning of colorimetric analysis principles.

FAQ

What reagent formats are supported by the DR/800 series?

The analyzer accepts Hach TNTplus™ vials, powder pillows, and glass ampoules—all designed for single-use, minimal handling, and lot-specific calibration traceability.
Can the DR/800 store custom calibration curves?

No—calibration curves are factory-loaded and non-editable; however, HachLink™ software allows users to generate and apply new curves externally for research or non-standard methods.
Is the instrument suitable for use in humid or outdoor environments?

Yes—rated IP67 for dust and temporary water immersion, and specified for continuous operation at up to 90% relative humidity without condensation.
How is data security maintained during transfer to a computer?

IR transmission is point-to-point and unidirectional; no network connectivity is required. When paired with HachLink™, all data transfers are logged with timestamps and user identifiers to meet audit trail requirements.
Does the DR/800 require annual recalibration by an authorized service center?

While no mandatory annual recalibration is stipulated, Hach recommends quarterly verification using NIST-traceable standard solutions and annual optical path inspection per ISO/IEC 17025 Clause 6.4.3.