Timepower TP-3115 Benchtop Colorimeter

Overview

The Timepower TP-3115 Benchtop Colorimeter is a precision optical measurement instrument engineered for quantitative colorimetric analysis of liquid samples in environmental, industrial, and municipal water quality laboratories. It operates on the principle of absorbance photometry—measuring light attenuation at specific wavelengths (typically within the visible spectrum, 400–700 nm) as defined by standardized color scales including Platinum-Cobalt (Pt-Co), Hazen, and APHA. The instrument complies with ISO 7887:1985 “Water quality — Examination and determination of colour”, ensuring metrological traceability and methodological consistency for routine color assessment in surface water, groundwater, wastewater, and industrial effluents. Its fixed-wavelength optical architecture utilizes a high-stability imported cold-light source with an operational lifetime exceeding 100,000 hours, minimizing drift and enabling long-term calibration stability without frequent lamp replacement.

Key Features

• Benchtop design with large backlit LCD display and intuitive membrane keypad interface for direct numeric readout of color units (e.g., Pt-Co units, mg/L Pt-Co, or dimensionless absorbance values)
• Integrated thermal printer supporting on-demand printing of real-time measurements and historical datasets—including date/time stamps, sample IDs, and operator codes
• Onboard memory capacity for up to 30,000 measurement records with automatic timestamping and user-defined sample labeling
• Pre-loaded standard calibration curves per ISO 7887 and USP , plus 96 programmable user-defined calibration curves for custom matrices or alternative color standards
• Dual data connectivity: 10/100 Mbps Ethernet port and USB 2.0 interface for bidirectional communication with laboratory information management systems (LIMS), PCs, or external printers
• Intelligent guided operation software embedded in firmware—step-by-step prompts for zero calibration, blank adjustment, sample measurement, and curve selection—reducing operator dependency and training overhead
• Low-consumption reagent design compatible with standardized Pt-Co stock solutions; minimal volume requirements per test reduce recurring cost and waste generation
• Non-volatile memory with power-loss protection ensures data integrity during unexpected shutdowns or maintenance cycles

Sample Compatibility & Compliance

The TP-3115 is validated for use with clarified, non-turbid aqueous samples meeting ISO 7887’s clarity requirements (i.e., turbidity ≤ 1 NTU prior to analysis). It supports direct analysis of raw and treated water, process streams, and cooling tower fluids following appropriate filtration or centrifugation. Instrument validation documentation includes factory-certified linearity verification across the 0–500 Pt-Co unit range, repeatability ≤ ±2 Pt-Co units (n=10, same operator, same cuvette), and inter-instrument agreement within ±3 Pt-Co units under controlled ambient conditions (20–25 °C, 40–60% RH). The device conforms to IEC 61000-4 electromagnetic compatibility standards and meets CE marking requirements for laboratory instrumentation. While not FDA 21 CFR Part 11–certified out-of-the-box, its audit trail functionality (timestamped operator ID, measurement log, and curve version tracking) supports GLP/GMP-aligned workflows when deployed with validated SOPs.

Software & Data Management

Data export is supported via CSV-formatted files over USB or network transfer. The instrument does not require proprietary PC software for basic operation but integrates seamlessly with third-party LIMS platforms using standard TCP/IP socket protocols or Modbus TCP. All stored data include metadata fields: measurement timestamp (YYYY-MM-DD HH:MM:SS), selected calibration curve ID, blank reference ID, and operator code. Internal firmware supports firmware updates via USB stick, with version-controlled update logs retained in system memory. Data backup and restoration are performed manually through file transfer—no cloud synchronization or remote access capabilities are implemented, preserving data sovereignty and network security in regulated environments.

Applications

• Regulatory compliance monitoring for municipal wastewater discharge permits (e.g., EPA Method 2120B equivalent interpretation)
• In-process color control in pharmaceutical water systems (PW, WFI) per USP guidance
• Quality assurance of industrial process waters in food & beverage, textile dyeing, and electroplating facilities
• Environmental field lab support for watershed assessments and stormwater runoff characterization
• Educational use in university analytical chemistry and environmental engineering laboratories

FAQ

Does the TP-3115 support multiple color scales beyond Pt-Co?
Yes—it natively reports in Pt-Co (Hazen/APHA) units and allows user-defined conversion factors for Gardner, Saybolt, or custom linearized scales via the 96-user-curve memory.
Is calibration verification traceable to NIST or other national standards?
Factory calibration uses certified Pt-Co reference standards traceable to NIM (National Institute of Metrology, China); users may establish secondary traceability using NIST SRM 2135a or equivalent certified reference materials.
Can the instrument operate unattended for extended periods?
It lacks automated sample handling or continuous flow capability; however, its low-power cold-light source and robust thermal design permit stable operation over 8-hour shifts without recalibration.
What cuvette specifications are required?
Standard 10-mm pathlength square glass or quartz cuvettes (matched pair recommended); 20-mm and 50-mm options supported via pathlength correction factor input in setup mode.
Is technical support available in English for international users?
Yes—Timepower provides English-language operation manuals, firmware release notes, and remote diagnostic support via email and secure file transfer; on-site service is coordinated through authorized regional distributors.