Hach DREL1900 Portable Water Quality Laboratory

Overview

The Hach DREL1900 Portable Water Quality Laboratory is a field-deployable, modular analytical platform engineered for rapid, standardized water quality assessment across diverse operational environments—including municipal field operations, industrial site monitoring, emergency response scenarios, and routine laboratory verification. Built upon Hach’s legacy of method-validated instrumentation, the DREL1900 integrates a fixed-wavelength spectrophotometer with embedded firmware calibrated to over 40 EPA- and ISO-recognized colorimetric and titrimetric procedures. Its architecture follows the principle of “method-in-a-box”: each test is supported by pre-measured, lot-certified reagents, traceable calibration standards, and step-by-step on-screen guidance—ensuring analytical consistency without reliance on centralized lab infrastructure. Unlike benchtop analyzers, the DREL1900 prioritizes rugged portability (IP65-rated enclosure, shock-absorbing carry case) while maintaining metrological integrity through NIST-traceable photometric validation and temperature-compensated optical path design.

Key Features

• Integrated spectrophotometer with dual-beam optics and 420–900 nm wavelength range, optimized for common water quality parameters including nitrate, phosphate, ammonia, iron, manganese, chromium, copper, zinc, fluoride, sulfate, and residual chlorine.
• Pre-loaded method library compliant with U.S. EPA, ISO, and APHA standard methods—enabling direct alignment with regulatory reporting requirements.
• Modular expansion capability: seamless integration with Hach HQ40d multi-parameter meter for electrochemical measurements (pH, conductivity, dissolved oxygen, ORP, TDS, salinity, temperature) and 2100Q turbidimeter (ISO 7027-compliant nephelometric measurement).
• Dedicated manual titration station with precision burette, calibrated pipettes, and reagent sets validated for ≥40–100 determinations per kit (dependent on titrant consumption); compatible with chlorine, bromine, iodine, hardness, alkalinity, and acidity assays.
• Onboard data logging with timestamp, operator ID, and method version tracking; export via USB to CSV or Hach’s DataStream software for audit-ready reporting.
• Ruggedized transport case with custom foam inserts, battery-powered operation (rechargeable Li-ion, >12 h runtime), and ambient temperature compensation (10–40 °C operating range).

Sample Compatibility & Compliance

The DREL1900 supports liquid samples from surface water, groundwater, wastewater effluent, drinking water distribution systems, and industrial process streams. Sample volumes range from 5 mL to 50 mL depending on method-specific requirements. All onboard reagents are manufactured under Hach’s ISO 9001-certified quality system and supplied with Certificate of Analysis (CoA) indicating lot-specific accuracy, stability, and shelf life. The system facilitates compliance with GLP and GMP documentation practices through mandatory field entry of sample ID, location, date/time, and analyst signature. Method validation reports—including detection limits, precision (RSD ≤5% at mid-range), and spike recovery (85–115%)—are available upon request for each certified procedure. The platform is routinely deployed in EPA Region-certified field labs and supports 21 CFR Part 11 readiness when paired with Hach’s secure DataStream v5.2 software.

Software & Data Management

Data acquisition and reporting are managed via the DREL1900’s embedded interface and optional Hach DataStream desktop application. The instrument stores up to 2,000 test records with full metadata (method ID, calibration history, raw absorbance/titration values, QC flags). USB export enables direct import into LIMS or Excel-based QA/QC spreadsheets. DataStream provides automated report generation aligned with EPA Form 3330-1 and ISO 17025 technical record templates. Audit trails include user login history, method modification logs, and electronic signatures—fully traceable for regulatory inspections. Firmware updates are delivered via encrypted Hach SecureLink protocol to maintain cryptographic integrity and prevent unauthorized configuration changes.

Applications

• Emergency response: Rapid screening for chlorine residuals, cyanide, phenol, and heavy metals following chemical spills or natural disasters.
• Municipal water utilities: On-site verification of disinfection byproducts, nutrient loading, and corrosion control parameters during distribution system audits.
• Industrial pretreatment monitoring: Real-time assessment of pH, TSS proxies, COD surrogates, and metal contaminants prior to discharge compliance checks.
• Environmental consulting: Multi-parameter profiling for Phase I/II site assessments, wetland characterization, and NPDES permit verification.
• Educational laboratories: Hands-on training in standard methods, QA/QC protocols, and field-to-lab data reconciliation workflows.

FAQ

Does the DREL1900 meet EPA-approved methods for regulatory reporting?
Yes—its spectrophotometric and titrimetric methods are validated against EPA Methods 365.3 (phosphate), 365.4 (nitrate), 8080 (pesticides), and APHA Standard Methods 4500-Cl G (free chlorine), among others. Full method equivalency documentation is provided with each reagent lot.
Can the DREL1900 be used for drinking water compliance testing?
It supports all primary and secondary drinking water parameters required under the U.S. Safe Drinking Water Act (SDWA) for field verification, including residual disinfectants, turbidity, nitrate, and fluoride—though final certification-grade reporting requires confirmation in an accredited laboratory per 40 CFR Part 141.
Is the HQ40d meter included by default?
No—the HQ40d and 2100Q turbidimeter are optional add-ons. The base DREL1900 configuration includes only the spectrophotometer, reagents, and core consumables. Three pre-defined configurations (General-Purpose, Complete, Industrial) determine bundled accessories.
How is calibration traceability maintained?
Each instrument undergoes factory calibration using NIST-traceable neutral density filters and certified reference standards. Users perform daily verification with Hach’s CalCheck standards; calibration logs are stored with each test record and exportable for audit review.
What is the expected shelf life of reagent kits?
Unopened reagent vials retain validity for 12–24 months depending on chemistry (e.g., DPDP for fluoride: 18 months; DPD for chlorine: 12 months), as specified in individual CoAs. Refrigeration is not required but recommended for extended storage beyond 6 months.