Palintest WaterGuard Multi-Parameter Water Quality Test Kit PTH050

Overview

The Palintest WaterGuard Multi-Parameter Water Quality Test Kit PTH050 is a field-deployable, digital photometer engineered for rapid, reliable, and standardized analysis of critical water quality parameters in drinking water, distribution systems, swimming pools, cooling towers, and small-scale treatment facilities. As the original developer of the DPD (N,N-diethyl-p-phenylenediamine) colorimetric method for chlorine determination, Palintest brings over five decades of metrological expertise to this compact instrument. The PTH050 operates on dual-wavelength photometry (530 nm and 575 nm), enabling precise quantification of absorbance changes induced by solid-phase reagent reactions—ensuring high reproducibility and minimal interferences across varying sample matrices. Its rugged IP67-rated housing meets IEC 60529 requirements for full dust ingress protection and temporary immersion resistance, making it suitable for use in humid, dusty, or outdoor environments without compromise to optical stability or electronic integrity.

Key Features

• IP67-certified enclosure for operation in high-humidity, dusty, or splash-prone field conditions
• Dual-wavelength (530 nm / 575 nm) LED-based photometric system with ±2 nm wavelength accuracy and 10 nm bandwidth for optimized spectral selectivity
• Backlit LCD display with intuitive keypad navigation and real-time unit confirmation for unambiguous result interpretation
• Onboard memory storing up to 10 most recent test records, including date/time stamp, parameter ID, and measured value
• Flexible zeroing protocol: user-selectable blank storage in memory or immediate calibration prior to each test cycle
• Low-power design powered by two standard AA batteries with automatic shutdown after 10 minutes of inactivity
• Pre-calibrated, factory-validated solid reagent tablets supplied under ISO 9001-managed production for lot-to-lot consistency

Sample Compatibility & Compliance

The PTH050 is validated for use with potable water, treated wastewater effluent, swimming pool water, and industrial process water where regulatory or operational monitoring of disinfection residual, acid-base balance, scaling potential, and trace metal contamination is required. All test methods conform to internationally recognized protocols: chlorine measurement follows APHA Standard Method 4500-Cl G (DPD colorimetric); pH testing aligns with ISO 10523; alkalinity and hardness determinations adhere to ASTM D1067 and ISO 6059; nitrite analysis complies with ISO 6777; and iron quantification meets EPA Method 3500-Fe B. The instrument’s design supports GLP-compliant workflows through traceable reagent lot numbers, documented calibration history, and operator-identifiable test records—facilitating audit readiness under UK Drinking Water Inspectorate (DWI), EU Drinking Water Directive (2020/2184), and WHO Guidelines for Drinking-water Quality frameworks.

Software & Data Management

While the PTH050 operates as a standalone photometer without embedded Bluetooth or USB connectivity, its structured data output enables seamless integration into laboratory information management systems (LIMS) or asset maintenance platforms via manual entry or barcode-assisted logging. Each test result includes parameter-specific units, resolution, and detection range context—critical for trending analysis and regulatory reporting. Reagent vials are labeled with Palintest’s proprietary AP-coded identifiers (e.g., AP041 for chlorine, AP130 for pH), ensuring full traceability to Certificate of Analysis (CoA) documentation and shelf-life validation. For organizations requiring electronic data capture, Palintest recommends pairing the PTH050 with the optional PT555/5 round cuvettes and PT545 rack for consistent cell positioning and reduced operator variability during high-throughput sampling.

Applications

• Routine verification of free chlorine residuals at point-of-entry and point-of-use in municipal and private water supply networks
• Commissioning and performance validation of point-of-use (POU) and point-of-entry (POE) filtration systems
• Swimming pool and spa water quality assurance per EN 15288-1 and PWTAG guidelines
• Troubleshooting corrosion or scaling issues through simultaneous measurement of pH, alkalinity, and hardness
• Field screening for nitrite breakthrough in chloraminated systems or iron leaching from aging distribution infrastructure
• Training and competency assessment for water utility technicians and environmental health officers

FAQ

Is the PTH050 compliant with ISO/IEC 17025 requirements for field testing?
The instrument itself is not accredited, but its methodology, reagents, and documented procedures support ISO/IEC 17025-compliant testing when operated within a certified laboratory’s scope of accreditation and subject to defined uncertainty budgets.

Can the PTH050 measure combined chlorine or monochloramine?
No—the PTH050 measures total chlorine (free + combined) only when using the AP041 reagent protocol. Differentiation between free and combined chlorine requires sequential DPD additions, which is outside the scope of this single-step photometer.

What is the shelf life of the solid reagent tablets?
Unopened reagent vials maintain stability for 24 months from manufacture when stored at 2–8 °C in low-humidity conditions; desiccant packs are included in all kits to preserve tablet integrity during field deployment.

Does the PTH050 require annual recalibration by an authorized service center?
No formal recalibration is mandated; however, users must verify optical performance quarterly using Palintest-supplied calibration check standards (e.g., AP-CAL-CLOR) and document results per internal QA procedures.

Are replacement cuvettes and accessories available separately?
Yes—PT555/5 (5-pack round glass cuvettes), PT545 (adjustable cuvette rack), and PT512 (multi-ratio plastic dilution cups) are stocked globally and compatible with all Palintest photometers utilizing 10 mm pathlength cells.