Palintest Lumiso Pooltest3 Portable Photometric Water Quality Analyzer

Overview

The Palintest Lumiso Pooltest3 is a purpose-engineered portable photometer optimized for routine, on-site monitoring of critical disinfection and balance parameters in swimming pool, spa, and recreational water systems. It operates on the internationally standardized DPD (N,N-diethyl-p-phenylenediamine) colorimetric method—originated and refined by Palintest Ltd., the UK-based pioneer of this analytical technique. The instrument employs dual-wavelength photometry with fixed narrow-band interference filters, enabling automatic wavelength selection based on the selected test parameter. This optical architecture ensures high specificity and minimizes interferences from turbidity or sample coloration. Unlike generic spectrophotometers, the Lumiso Pooltest3 is calibrated exclusively for validated Palintest reagent tablets and vials, guaranteeing traceable accuracy aligned with ISO and national regulatory benchmarks—including China’s GB/T 5750.11–2023 and the EU’s EN 15289:2021 for pool water quality control.

Key Features

• IP67-rated rugged housing—fully dust-tight and submersible up to 1 m for 30 minutes—enabling reliable operation in wet, chlorinated, and outdoor environments.
• Dual-range chlorine measurement: standard range (0.01–5.00 mg/L) and extended range (0.01–10.00 mg/L) for free and total chlorine, supporting both routine surveillance and shock-dosing verification.
• Integrated blank recognition and zero-point auto-calibration—eliminates manual zeroing errors and ensures consistent baseline correction across field conditions.
• Icon-driven, language-neutral interface with backlit high-resolution LED display (226 × 138 pixels), optimized for glove-compatible operation and low-light poolside use.
• Optical path length enhancement for improved low-concentration resolution—critical for detecting residual disinfectant levels at the lower limit of regulatory compliance (e.g., ≥0.3 mg/L free chlorine).
• Onboard data logging with timestamped storage of up to 50 measurements—supports audit-ready recordkeeping and trend analysis without external devices.

Sample Compatibility & Compliance

The Lumiso Pooltest3 is validated for use with Palintest’s CE-marked, ISO 17025-accredited reagent systems—including DPD No. 1 (free chlorine), DPD No. 3 (total chlorine), pH indicator tablets (bromocresol green/methyl red), and cyanuric acid reagents. Sample volume requirement is 10 mL for all assays. The instrument meets functional and performance criteria specified in ISO 7027 (turbidity reference), ASTM D1253 (chlorine residual), EN ISO 8467 (spectrophotometric determination of oxidants), and GB/T 5750.11–2023 (Chinese national standard for drinking and recreational water). Its design supports GLP-aligned workflows: all measurements include automatic date/time stamping, and firmware supports optional audit-trail logging when paired with Palintest’s certified desktop software (Lumiso Connect).

Software & Data Management

Data transfer is performed via micro-USB connection to Windows/macOS platforms using Palintest’s Lumiso Connect software—a validated application compliant with FDA 21 CFR Part 11 for electronic records and signatures (when configured with user authentication and audit trail enabled). The software allows batch export to CSV/Excel, report generation with customizable templates (including facility ID, operator name, and sampling location), and over-the-air firmware updates via QR-code scanning. All stored measurements retain immutable metadata: test parameter, concentration, units, measurement time, and instrument serial number—ensuring full traceability for internal QA reviews or third-party inspections.

Applications

• Routine daily monitoring of free and total chlorine in municipal, hotel, and fitness center swimming pools.
• Cyanuric acid quantification to assess stabilizer concentration and prevent chlorine lock or UV degradation.
• pH verification within the optimal 7.2–7.8 range to ensure disinfectant efficacy and bather comfort per WHO and CDC guidelines.
• Pre-commissioning validation and periodic verification of automated dosing systems.
• Third-party certification audits requiring documented, instrument-based evidence of compliance with local health department regulations.
• Training and competency assessment for lifeguards and facility maintenance staff under ISO/IEC 17025-aligned laboratory management systems.

FAQ

Does the Lumiso Pooltest3 require annual calibration certification?
No—its optical system is factory-calibrated against NIST-traceable standards and does not drift under normal use. However, users must perform daily blank verification with deionized water before first use and after reagent lot changes.
Can it measure combined chlorine independently?
Yes—combined chlorine is calculated as the difference between total and free chlorine values, both measured sequentially on the same sample using dedicated DPD tablets.
Is the instrument compatible with non-Palintest reagents?
No—optical filters, calibration curves, and algorithmic corrections are uniquely matched to Palintest’s tablet formulations and lot-specific absorbance profiles. Use of third-party reagents invalidates accuracy claims and voids regulatory compliance.
What is the battery life under typical field use?
Approximately 10,000 measurements per set of three AA alkaline batteries (tested at 25°C, with backlight enabled for 5 sec per reading). Battery status is displayed continuously on the home screen.
How is data integrity maintained during USB transfer?
Lumiso Connect implements SHA-256 hash verification for all exported files and logs all export events—including user ID, timestamp, and destination path—in the instrument’s internal audit trail when enabled.