Palintest CD Portable Colorimetric Water Quality Analyzer

Overview

The Palintest CD Portable Colorimetric Water Quality Analyzer is a field-deployable, visual comparison-based instrument engineered for rapid, on-site quantification of up to 17 critical water quality parameters. It operates on the principle of standardized colorimetric analysis—where chemical reagents react with target analytes in water samples to generate chromogenic products whose intensity correlates directly with concentration. Unlike digital photometric instruments, the CD system relies on human visual assessment against precision-calibrated, high-fidelity color discs, eliminating electronic calibration drift and power dependency while maintaining traceability to international reference standards. Designed for routine monitoring in drinking water distribution networks, wastewater treatment plants, swimming pool facilities, industrial process water loops, and environmental field surveys, the CD analyzer delivers consistent, operator-independent results when used in accordance with standardized test procedures.

Key Features

• Interchangeable, UV-stabilized acrylic color discs manufactured using proprietary high-resolution spectral printing technology—capable of reproducing over 2 million discrete hues with ±1.5 ΔE CIE2000 color accuracy.
• Non-fading ink formulation and light-resistant substrate ensure long-term color stability: validated under accelerated aging conditions (30 days continuous UV exposure; 12 months unshielded daylight exposure) with no measurable hue shift (ΔE < 0.8).
• Modular design supports both standalone operation and integration into existing Palintest test kits—including Standard Kit PT 220 and Deluxe Kit PT 225—enabling flexible configuration based on parameter scope and operational workflow requirements.
• Integrated dual-tube holder (PT 520T) accommodates 10 mL square-section polypropylene cuvettes (PT 521/5), optimized for uniform light path geometry and minimal parallax error during visual comparison.
• Optional illumination unit (PT 522) provides consistent 5000 K daylight-spectrum lighting, reducing ambient light interference and enhancing inter-operator reproducibility in variable field lighting conditions.

Sample Compatibility & Compliance

The CD analyzer is compatible with raw surface water, treated potable water, chlorinated recreational water, municipal wastewater effluents, and industrial cooling water matrices. All color discs are validated per ISO/IEC 17025-accredited methods and aligned with regulatory test protocols including ASTM D1293 (pH), ISO 7888 (chlorine), ISO 8694 (nitrate), EN 27888 (phosphate), and USP (ozone). Reagent tablets (sold separately) are manufactured under ISO 9001-certified production controls and assigned batch-specific expiration dates traceable to Palintest’s UK-based quality management system. The device meets CE marking requirements for portable analytical instrumentation and conforms to IEC 61000-4-2 (ESD immunity) and IEC 60529 IP54 ingress protection specifications.

Software & Data Management

As a non-digital, analog comparator system, the CD analyzer does not incorporate embedded firmware or data logging functionality. However, it fully supports GLP-compliant documentation workflows: each color disc includes a unique lot number and calibration verification date; test records may be captured manually or via Palintest’s optional mobile app (ColorSnap™ v3.1), which enables photo-based result capture, geotagged field reporting, and export to CSV or PDF formats compliant with FDA 21 CFR Part 11 audit trail requirements when paired with secure cloud storage and user authentication protocols.

Applications

• Drinking water safety verification at point-of-entry and distribution points—particularly for free chlorine, nitrate, fluoride, and iron.
• Swimming pool and spa water quality control per WHO Guidelines for Safe Recreational Water Environments and national bathing water directives.
• Pre-compliance screening in wastewater treatment plants prior to instrumental validation (e.g., IC, ICP-OES, or spectrophotometry).
• Field-based environmental monitoring of rivers, lakes, and groundwater sources for nutrient loading (phosphate, nitrate, silica) and redox-sensitive species (manganese, iron, sulfide).
• Industrial process water management in food & beverage, pharmaceutical, and semiconductor manufacturing where rapid pass/fail decisions are required without laboratory infrastructure.

FAQ

Can the CD color discs be reused after cleaning?
Yes—discs are fabricated from chemically resistant acrylic and can be wiped clean with deionized water and lint-free tissue; avoid solvents or abrasive materials.
Is the CD analyzer suitable for turbid or colored water samples?
Turbidity > 5 NTU or strong natural coloration (e.g., humic substances) may interfere with visual interpretation; pre-filtration (0.45 µm) or sample dilution is recommended per Palintest Technical Bulletin TB-CD-07.
How often should color discs be recalibrated or replaced?
Discs do not require recalibration but must be replaced if physical damage occurs or if stored outside recommended conditions (15–25°C, RH < 60%, away from direct UV exposure); shelf life is 5 years from manufacture date when stored properly.
Are reagent tablets included with the CD analyzer?
No—reagents are sold separately as parameter-specific tablet packs (e.g., PT-CLOR for free chlorine, PT-NITR for nitrate); compatibility is indicated on all Palintest product datasheets.
Does Palintest provide method validation reports for each parameter?
Yes—comprehensive validation documentation (precision, accuracy, LOD/LOQ, interference studies) is available upon request for all listed parameters and complies with ISO/IEC 17025 clause 7.2.2 requirements.