Timepower TP3118 Benchtop Turbidimeter
| Brand | Timepower |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Type | Benchtop / Laboratory Turbidimeter |
| Model | TP3118 |
| Measurement Range | 0–1000 NTU (auto-ranging across four sub-ranges: 0–10, 10–100, 100–400, and 400–1000 NTU) |
| Resolution | 0.01 NTU |
| Operating Temperature | 5–45 °C |
| Accuracy | ±2% of Full Scale (F.S.) |
| Repeatability | ≤5% |
| Optical Source | Imported Cold LED Light Source (Lifespan ≥100,000 h) |
| Display | 5.0-inch Color LCD (Chinese/English Switchable) |
| Data Storage | 30,000 Measurements + 96 Custom Calibration Curves |
| Interface | USB 2.0, RJ45 Ethernet Port |
| Power Supply | AC 220 V ±10%, 50 Hz ±0.5 Hz |
| Power Consumption | 5 W |
| Dimensions | 348 × 250 × 145 mm |
| Weight | 2.6 kg |
Overview
The Timepower TP3118 Benchtop Turbidimeter is a precision optical instrument engineered for reliable, traceable turbidity measurement in laboratory and quality control environments. It operates on the principle of nephelometry—measuring the intensity of light scattered at 90° by suspended particulate matter in aqueous samples. This method complies with internationally recognized standards including ISO 7027-1:2016 (Water quality — Determination of turbidity — Part 1: Nephelometric method), ASTM D6508-21 (Standard Test Method for Turbidity of Water Using a Nephelometer), and US EPA Method 180.1. Designed for routine analysis in regulated settings, the TP3118 delivers stable performance under variable ambient conditions (5–45 °C) and supports full auditability through timestamped data logging, calibration traceability, and GLP-compliant operation.
Key Features
- Nephelometric detection geometry optimized for high sensitivity and low interference from color or absorbance.
- Four auto-switching measurement ranges (0–10, 10–100, 100–400, 400–1000 NTU) ensure optimal signal-to-noise ratio across diverse sample matrices.
- Imported cold LED light source provides spectral stability, minimal thermal drift, and extended operational lifetime (>100,000 hours).
- 5.0-inch full-color LCD with dual-language interface (English/Chinese) and intuitive menu navigation guided by embedded procedural prompts.
- Built-in thermal printer enables immediate hardcopy output of current readings, calibration reports, and historical datasets.
- Onboard memory stores up to 30,000 measurement records and supports 96 user-defined calibration curves—including multi-point polynomial fits per ISO 7027 Annex B.
- Dual communication interfaces (USB 2.0 and 10/100 Mbps Ethernet) facilitate integration with LIMS, ELN systems, or centralized data servers.
Sample Compatibility & Compliance
The TP3118 accommodates standard 25-mm round glass or quartz cuvettes (10 mm path length), compatible with both Formazin and StablCal® reference standards. Its optical design minimizes stray light error and meets the angular tolerance requirements specified in ISO 7027-1 for Class 1 instruments. The system supports compliance workflows for ISO/IEC 17025-accredited laboratories, including configurable user access levels, electronic signature support, and audit-trail-enabled data modification logs. All calibration events—including zero adjustment, span verification, and curve validation—are timestamped and stored with operator ID, ensuring adherence to FDA 21 CFR Part 11 requirements when paired with validated PC software.
Software & Data Management
Data export is supported via USB mass storage mode or TCP/IP socket protocol, enabling seamless transfer to third-party platforms such as LabWare LIMS, Thermo Fisher SampleManager, or custom Python-based QA dashboards. The instrument firmware includes built-in data integrity safeguards: automatic checksum validation upon power-up, cyclic redundancy checking (CRC-32) for all stored records, and non-volatile memory with battery-backed real-time clock. Optional Timepower T-Link Desktop Software provides advanced features including trend analysis, statistical process control (SPC) charting, automated report generation (PDF/CSV), and remote firmware updates—all compliant with GxP documentation standards.
Applications
The TP3118 serves critical roles in municipal drinking water monitoring (per GB/T 5750.4–2006 and EPA 180.1), wastewater effluent compliance testing (DL/T 809–2002), pharmaceutical process water qualification (USP , EP 2.2.18), and bioprocess broth clarity assessment. It is routinely deployed in QC labs for beverage filtration validation, chemical coagulant dosing optimization, membrane integrity testing, and R&D studies involving nanoparticle dispersion stability. Educational institutions utilize its robust architecture and pedagogical interface for teaching fundamental principles of light scattering, calibration theory, and analytical method validation.
FAQ
What calibration standards are recommended for routine verification?
Formazin suspension (primary standard) or polymer-based stable turbidity standards (e.g., StablCal®) traceable to NIST SRM 2134 are recommended. Daily zero calibration using ultrapure water (≤0.1 NTU) is advised before batch analysis.
Does the TP3118 meet regulatory requirements for pharmaceutical water testing?
Yes—when operated with documented calibration procedures, qualified reference materials, and configured with audit-trail enabled software, it satisfies USP , EU GMP Annex 11, and WHO TRS 992 data integrity expectations.
Can the instrument be integrated into an existing LIMS environment?
Yes—via Ethernet or USB, using standard CSV export or optional OPC UA server add-on for real-time bidirectional data exchange.
Is temperature compensation applied during measurement?
No—the TP3118 performs measurements at ambient sample temperature; users must equilibrate samples to 20 ±2 °C per ISO 7027-1 if reporting standardized values.
How often should optical alignment verification be performed?
Optical axis alignment should be verified annually by authorized service personnel using collimated laser alignment tools, or following any physical impact or transport event.
