Palintest 7100 Portable Multi-Parameter Photometer
| Brand | Palintest |
|---|---|
| Origin | United Kingdom |
| Model | 7100 |
| Instrument Type | Portable / Handheld Photometer |
| Detection Parameters | Free & Total Chlorine, Chloramines, Bromine, Ozone, Ammonia-N, Nitrate-N, Total Phosphorus, Total Nitrogen, COD, Iron (LR/HR/MR), Manganese (LR/HR), Fluoride, Silica, Copper, Zinc, Hardness, Alkalinity, pH, Turbidity, Sulfate, Cyanide, Phenol, Surfactants, Urea, and >100 additional parameters |
| Optical Wavelengths | 450 nm, 500 nm, 550 nm, 570 nm, 600 nm, 650 nm |
| Display | Backlit LCD with alphanumeric interface |
| Accuracy | ±1% T |
| Absorbance Resolution | 0.001 AU |
| Memory Capacity | 500 test results with timestamp, parameter ID, and sample ID |
| Custom Calibration Curves | Up to 30 user-defined curves |
| Connectivity | Waterproof USB port and Bluetooth 4.0 |
| Ingress Protection | IP67 |
| Power Supply | 3 × AA batteries or USB bus power |
| Dimensions | 150 × 250 × 70 mm |
| Weight | 975 g |
| Certifications | CE, UKCA, CPA (UK Water Regulations Advisory Scheme) |
Overview
The Palintest 7100 Portable Multi-Parameter Photometer is a field-deployable, high-integrity photometric analyzer engineered for quantitative determination of water quality parameters in compliance with internationally recognized standard methods—including APHA, ASTM, ISO, and EN standards. Leveraging fixed-wavelength absorbance measurement across six discrete optical bands (450, 500, 550, 570, 600, and 650 nm), the instrument implements validated colorimetric chemistries—including DPD (N,N-diethyl-p-phenylenediamine) for chlorine species, ascorbic acid/molybdate for phosphate, persulfate digestion for total nitrogen, and dichromate reflux (mercury-free variants available) for COD. As the original developer of the DPD methodology, Palintest integrates decades of assay optimization into reagent formulations and photometric algorithms—ensuring metrological traceability, inter-laboratory reproducibility, and robustness under variable ambient conditions. Designed for operation in environmental monitoring, drinking water distribution, wastewater treatment, industrial process control, and public health laboratories, the 7100 delivers laboratory-grade data integrity in a ruggedized portable platform.
Key Features
- IP67-rated enclosure with sealed optical path and corrosion-resistant housing—certified for immersion up to 1 m for 30 minutes and dust-tight operation.
- Dual-mode connectivity: waterproof USB interface for direct PC synchronization and Bluetooth 4.0 for secure wireless transmission to iOS/Android applications compliant with GLP audit-trail requirements.
- Large backlit LCD display supporting dual-language UI (English and Chinese), configurable date/time format, sample coding, dilution factor entry, and unit selection (mg/L, ppm, µmol/L, NTU, pH units).
- Integrated memory stores 500 full test records—including parameter name, measured value, wavelength, date/time stamp, operator ID, and calibration status—retained without external power.
- Support for up to 30 user-defined calibration curves using manufacturer-supplied or third-party reference standards; curve validation includes R², intercept, slope, and residual error reporting.
- Optimized cuvette chamber accommodates standard 12–20 mm round glass or plastic tubes; automatic pathlength compensation eliminates manual alignment errors.
- Power flexibility: operates on three AA alkaline cells (typical life ≥ 2,000 measurements) or draws power directly from USB host—enabling continuous operation during data download or firmware updates.
Sample Compatibility & Compliance
The Palintest 7100 is validated for use with Palintest’s full portfolio of EPA- and ISO-compliant solid and liquid reagent kits—including mercury-free COD assays (PL 450–467 series), enzymatic and spectrophotometric ammonia-N methods (PM 152, PL 400/420/424/425), and certified reference materials traceable to NIST SRMs. All listed parameters adhere to method-specific detection limits and linear dynamic ranges defined in Palintest’s Certificate of Conformance (CoC) and UKAS-accredited test reports. The system meets UK Water Supply (Water Fittings) Regulations 1999 (CPA certification), EU Directive 2015/1787 (drinking water parameters), and supports adherence to ISO/IEC 17025:2017 documentation requirements through embedded metadata logging and exportable CSV/Excel-compatible files. Optional PT 804 Photometer Verification Kit enables in-field optical performance verification per ISO 8466-1.
Software & Data Management
Data generated by the 7100 is structured for regulatory interoperability. USB exports generate timestamped, parameter-tagged .csv files compatible with LIMS platforms (e.g., LabWare, STARLIMS) and statistical analysis tools (Minitab, JMP). Bluetooth-enabled mobile applications provide real-time graphing, trend visualization, and automated report generation—including customizable headers, site identifiers, and QA/QC flags (e.g., blank deviation, curve fit warning). Firmware updates are delivered via encrypted OTA packages with SHA-256 signature verification. Audit trails record all configuration changes, calibration events, and data export actions—supporting FDA 21 CFR Part 11 compliance when deployed with validated enterprise software modules.
Applications
- Drinking water utilities: Routine verification of disinfectant residuals (free/total chlorine, chloramines, ozone), turbidity, fluoride, nitrate, and lead/copper action level screening.
- Wastewater treatment plants: Monitoring influent/effluent COD, total phosphorus, ammonia-N, nitrate-N, and sulfate for process optimization and regulatory discharge reporting.
- Industrial cooling towers & boiler feedwater: Quantification of biocide residuals (bromine, PHMB), corrosion inhibitors (molybdate, zinc), silica, and hardness ions.
- Swimming pool & spa management: Rapid assessment of chlorine/bromine, cyanuric acid, pH, alkalinity, and combined chlorine—aligned with WHO and PWTAG guidelines.
- Field environmental surveys: On-site screening of surface water, groundwater, and stormwater for nutrients, metals (Fe, Mn, Cu, Ni), and organic contaminants (COD, surfactants, urea).
FAQ
Does the Palintest 7100 support EPA Method 365.4 for orthophosphate?
Yes—the instrument implements the ascorbic acid–molybdate blue method per EPA 365.4 using PM 114 (HR) and PM 177 (LR) reagents, with detection limits of 0.03 mg/L PO₄–P and 1.0 mg/L PO₄–P respectively.
Can custom calibration curves be exported or backed up externally?
User-defined curves are stored internally and may be exported via USB as encrypted .pcc files; backup and restoration require Palintest Configuration Utility v3.2+.
Is the 7100 suitable for marine or brackish water analysis?
Yes—chloride interference is mitigated in relevant assays (e.g., PM 268 chloride kit covers 0.5–50,000 mg/L); high-salinity samples require dilution per method instructions.
What is the recommended recalibration interval for routine use?
Optical zero and span verification should be performed daily using air and supplied neutral density filters; full photometric calibration with NIST-traceable standards is recommended every 90 days or after 500 measurements.
Does the device comply with GLP data integrity requirements?
When used with Palintest’s validated software suite and enabled audit-trail logging, the 7100 satisfies ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) and supports 21 CFR Part 11 electronic signature workflows.
