Lamotte Spin Touch Portable Rotational Water Quality Analyzer

Overview

The Lamotte Spin Touch Portable Rotational Water Quality Analyzer is an engineered solution for rapid, field-deployable multi-parameter water analysis based on precision photometric detection in a sealed, rotationally actuated microfluidic disc platform. Unlike conventional benchtop spectrophotometers or strip-based test kits, the Spin Touch employs a centrifugal fluidic principle—where sample introduction, reagent release, mixing, reaction incubation, and optical measurement occur sequentially within a single, pre-calibrated disposable disc. This architecture eliminates manual pipetting, reagent preparation, and calibration drift associated with open-vessel methods. The integrated 6-wavelength photometer (420 nm, 470 nm, 520 nm, 560 nm, 610 nm, 650 nm) enables simultaneous quantification of colorimetric and turbidimetric endpoints across diverse analytes without filter wheel switching or wavelength recalibration. Designed for regulatory-relevant water matrices—including drinking water, recreational pool/spa water, and disinfectant residual monitoring—the instrument operates independently of external computing devices and meets core performance expectations for field use under ASTM, EPA, and ISO standard methodologies.

Key Features

• Single-touch operation via 5.0-inch capacitive LCD touchscreen with intuitive icon-driven workflow
• Rotational assay disc technology: fully enclosed, foil-sealed, factory-preloaded reagents eliminate user handling error and cross-contamination
• 6-wavelength LED photometer with temperature-compensated detector array and auto-zero reference channel
• Onboard calibration verification using built-in instrument check disc (included) prior to each testing session
• Internal rechargeable lithium-ion battery supporting ≥100 assays per charge (typical usage)
• IP67-rated polycarbonate housing resistant to chlorine vapor, splashes, dust, and incidental submersion
• No consumables beyond assay discs: no cuvettes, no pipette tips, no buffer solutions required
• Real-time result display with pass/fail indicators aligned to WHO, EPA, and CDC guideline thresholds

Sample Compatibility & Compliance

The Spin Touch supports direct analysis of raw, filtered, or clarified aqueous samples from municipal distribution systems, point-of-use treatment units, swimming pools, hot tubs, cooling towers, and wastewater effluent streams. Each disc series targets specific matrix interferences: DW11 discs are optimized for low-turbidity potable water (≤1 NTU); 501 discs employ rapid kinetic chemistry for high-residual chlorine environments; 101 discs include cyanuric acid stabilization and copper chelation protocols validated for chlorinated pool water (pH 7.2–7.8, CYA 30–100 ppm). All disc chemistries comply with AOAC Official Methods of Analysis where applicable and demonstrate linearity per EPA Method 334.0 (free/total chlorine), ASTM D1293-22 (pH), and ISO 8299:2021 (chloramine determination). Instrument firmware supports GLP-compliant data integrity through immutable timestamped records and optional encrypted export to LIMS via USB or Bluetooth.

Software & Data Management

Data acquisition and reporting are managed exclusively through the embedded operating system—no external software installation is required. Each measurement stores date, time, operator ID (optional), disc lot number, and raw absorbance values at all six wavelengths. Up to 2,000 test records are retained in non-volatile memory with automatic overwrite protection for flagged outlier results. Export options include CSV files via USB mass storage mode or secure Bluetooth pairing with Lamotte’s certified mobile application (iOS/Android) for cloud synchronization. Audit trails record all configuration changes, calibration events, and disc initialization sequences—fully traceable for FDA 21 CFR Part 11 compliance when used in regulated facilities. Firmware updates are delivered via signed binary packages through Lamotte’s secure portal.

Applications

• Drinking water safety verification at distribution points, schools, and healthcare facilities
• Recreational water quality monitoring per CDC Model Aquatic Health Code (MAHC) requirements
• Disinfection byproduct (DBP) precursor screening during chloramination processes
• Corrosion control assessment via simultaneous Fe²⁺/Fe³⁺ speciation and alkalinity/hardness profiling
• Field validation of point-of-entry (POE) and point-of-use (POU) treatment systems
• Emergency response water testing during natural disasters or infrastructure failures

FAQ

How does the rotational disc mechanism ensure reproducibility?
The disc rotates at precisely controlled angular velocity (±0.5% tolerance) to govern fluidic timing, ensuring consistent reagent dispersion, mixing kinetics, and reaction dwell time across all assays.
Can the Spin Touch be used for wastewater influent analysis?
It is validated for secondary-treated effluent and disinfected reuse water; undiluted raw wastewater requires filtration (0.45 µm) prior to analysis to prevent disc clogging.
What is the shelf life and storage requirement for unused assay discs?
Unopened foil packs retain full performance for 24 months when stored between 2 °C and 30 °C; avoid freezing or prolonged exposure to UV light.
Is calibration required before every test?
No—calibration verification is performed automatically using the included instrument check disc; full calibration is only necessary after firmware updates or hardware service.
Does the device support custom method development?
No—assay chemistries are fixed per disc type and cannot be modified; method flexibility is achieved through selection of DW11, 501, or 101 disc formats.