ATAGO PAL-Cleaner Portable Digital Refractometer

Overview

The ATAGO PAL-Cleaner is a precision-engineered handheld digital refractometer designed specifically for real-time, on-site monitoring of aqueous cleaning solution concentrations in industrial manufacturing and metalworking environments. It operates on the principle of total internal reflection: light passes through a prism in contact with the sample, and the critical angle of refraction—directly correlated to the solution’s refractive index—is measured and converted into concentration (% w/w) using a pre-calibrated algorithm optimized for common alkaline, acidic, and neutral industrial cleaners. Unlike generic refractometers, the PAL-Cleaner employs ATAGO’s proprietary temperature-compensated optical system (ATC), enabling accurate readings across a broad operational range of 10–100°C without manual correction—critical for hot tank monitoring in parts washing, deburring, or passivation lines. Its compact form factor, ruggedized housing, and absence of moving parts ensure long-term stability and minimal calibration drift under factory-floor conditions.

Key Features

• Automatic Temperature Compensation (ATC) across 10–100°C, eliminating manual correction and ensuring measurement integrity during dynamic thermal processes.
• Digital LCD display with 0.1% resolution and ±0.1% accuracy—validated per ISO 21748 and traceable to NIST-traceable reference standards.
• IP65-rated enclosure provides full protection against dust ingress and low-pressure water jets, suitable for humid, oily, or coolant-splashed production zones.
• Optimized optical path and high-stability sapphire prism deliver consistent signal-to-noise ratio and resistance to chemical etching from aggressive surfactants and chelating agents.
• Two AAA battery operation supports >10,000 measurements per set, with auto-power-off after 3 minutes of inactivity to extend service life.
• Ergonomic, one-handed operation with intuitive single-button interface—no training required for line technicians or QC personnel.

Sample Compatibility & Compliance

The PAL-Cleaner is calibrated for aqueous-based cleaning formulations including alkaline degreasers (e.g., sodium metasilicate, sodium carbonate blends), acidic descalers (e.g., citric, phosphoric acid solutions), and neutral pH emulsifiers used in CNC machining and electroplating pretreatment. It is not intended for non-aqueous solvents (e.g., hydrocarbons, alcohols) or highly viscous pastes. The instrument complies with IEC 60529 (IP65), RoHS Directive 2011/65/EU, and meets essential requirements of the EU Measuring Instruments Directive (MID) Annex MI-001 for portable refractometers used in industrial process control. While not certified as a medical device, its measurement repeatability (<0.05% RSD, n=10) satisfies internal QA protocols aligned with ISO 9001:2015 Clause 7.1.5 and supports GLP-aligned documentation when integrated into controlled environments.

Software & Data Management

The PAL-Cleaner operates as a standalone field instrument with no embedded data logging or Bluetooth connectivity. However, its deterministic output enables seamless integration into existing shop-floor quality systems: users may manually record values in electronic batch records (EBRs), LIMS, or MES platforms compliant with FDA 21 CFR Part 11 (when paired with validated entry procedures). ATAGO provides optional calibration verification kits (e.g., PAL-Cleaner Standard Set, Cat. No. 4536-STD) containing traceable reference solutions at 5.0%, 10.0%, and 20.0%—each certified to ±0.05% uncertainty and accompanied by CoA per ISO/IEC 17025. Routine verification intervals are defined per internal SOPs but typically recommended every 8 hours of continuous use or prior to critical lot release.

Applications

• Real-time concentration control of alkaline soak tanks in automotive component cleaning lines.
• Verification of rinse water conductivity correlation in semiconductor wafer cleaning processes.
• Monitoring of biocide concentration in closed-loop cooling tower maintenance programs.
• Pre-shift validation of detergent strength in aerospace MRO facilities prior to NADCAP audit cycles.
• Quick-check verification of dilution ratios for ultrasonic cleaning baths in precision machining shops.

FAQ

Is the PAL-Cleaner suitable for measuring ethanol-based cleaners?
No. The instrument’s calibration curve is specific to aqueous ionic and non-ionic cleaning agents; ethanol or IPA solutions require dedicated alcohol refractometers (e.g., PAL-Alco series).
Does it require periodic recalibration by an accredited lab?
No—field verification using ATAGO-certified standard solutions is sufficient per ISO 8655-6; full recalibration is only necessary if physical damage occurs or after exposure to temperatures exceeding 100°C.
Can it be used in high-humidity environments like paint booth wash-down areas?
Yes. The IP65 rating ensures reliable operation even when exposed to condensation or intermittent spray, provided the prism surface is wiped dry before each measurement.
What does “ATC” mean in the context of this refractometer?
ATC stands for Automatic Temperature Compensation—a built-in thermistor network that dynamically adjusts the refractive index-to-concentration conversion in real time, compensating for thermal expansion effects across the 10–100°C range.
How often should the prism be cleaned between samples?
The prism must be wiped with lint-free tissue and deionized water (or appropriate solvent, per cleaner chemistry) before each measurement to prevent cross-contamination and optical residue buildup.