DRETOP TFZ6-2000 Constant-Temperature Inversion Shaker

Overview

The DRETOP TFZ6-2000 Constant-Temperature Inversion Shaker is an engineered laboratory instrument designed for standardized solid waste leaching toxicity testing in compliance with environmental regulatory protocols. It operates on the principle of controlled rotational inversion—where sample containers are rotated end-over-end at precisely adjustable speeds and dwell intervals—ensuring uniform, reproducible contact between solid matrices and extraction solvents under thermostatically stabilized conditions. This mechanism is critical for simulating leaching behavior in landfill environments and assessing contaminant mobility under defined pH and temperature regimes. Unlike orbital or reciprocating shakers, the inversion motion minimizes particle segregation and sediment compaction, making it especially suitable for heterogeneous solid samples such as soil, sludge, fly ash, and industrial residues. The unit is purpose-built for routine operation in environmental testing laboratories, regulatory compliance facilities, and academic research centers conducting EPA Method 1311 (TCLP), HJ/T 299–2007 (Sulfuric-Nitric Acid Extraction), and HJ/T 300–2007 (Acetic Acid Buffer Extraction) procedures.

Key Features

• Programmable bidirectional inversion: Independent control of forward rotation duration, pause interval, reverse rotation duration, and inter-cycle rest period—enabling complex leaching protocols such as “2 min forward → 5 sec pause → 2 min reverse → 5 sec pause” sequences.
• Stable thermal environment: PID-controlled heating system maintains temperature uniformity within ±0.5°C across the entire sample chamber (RT+5°C to 65°C), verified per IEC 61000-4-30 thermal stability criteria.
• Robust mechanical architecture: Full-aluminum sample holder with passivated surface finish ensures corrosion resistance, easy decontamination, and long-term dimensional stability under repeated thermal cycling.
• Electrostatically coated steel enclosure: Powder-coated exterior provides chemical resistance, scratch durability, and simplified wipe-down maintenance—essential for labs handling acidic or organic extraction media.
• Integrated safety system: Automatic power cutoff upon lid opening (mechanical interlock), dual-stage overtemperature cutoff (electronic + bimetallic), grounded leakage protection (≤30 mA trip threshold), and motor thermal overload sensing.
• LCD user interface with non-volatile memory: Stores up to 10 user-defined protocols; retains settings after power interruption; supports real-time monitoring of setpoint vs. actual temperature and speed.

Sample Compatibility & Compliance

The TFZ6-2000 accommodates six standard 1 L or 2 L extraction vessels—including borosilicate glass, HDPE, PTFE-lined, and certified ZHE-series containers—mounted on a rigid, balanced aluminum tray. Vessel clamping is tool-free and fully adjustable to accommodate dimensional variance across certified container types. The instrument meets structural and operational requirements specified in Chinese Environmental Protection Standards HJ/T 299–2007 and HJ/T 300–2007, and its inversion kinematics align with ASTM D5233–22 (Standard Practice for Determining Leachability of Solid Waste) for low-shear, high-contact-efficiency agitation. All electrical components conform to GB 4793.1–2018 (equivalent to IEC 61010-1), and the device supports GLP-compliant workflow documentation when paired with external audit-trail-capable data loggers.

Software & Data Management

While the TFZ6-2000 operates via standalone LCD control, its timing and temperature parameters are fully exportable via optional RS-485 serial interface (Modbus RTU protocol) for integration into centralized laboratory information management systems (LIMS). When connected to compliant data acquisition hardware, all parameter changes, runtime events (e.g., lid open/close, overtemp alert), and session timestamps are recorded with ISO/IEC 17025-aligned traceability. The system supports 21 CFR Part 11–compatible electronic signatures when deployed with validated third-party software platforms—enabling secure, auditable recordkeeping for regulatory submissions and internal quality assurance reviews.

Applications

• Regulatory leaching tests for hazardous waste classification (e.g., TCLP, SPLP, EP Toxicity)
• Soil and sediment contamination screening per national environmental monitoring programs
• Leachate generation for subsequent analysis by ICP-MS, IC, or AAS
• Method validation and inter-laboratory comparison studies under CNAS or ILAC frameworks
• Research on contaminant release kinetics under variable pH and temperature stressors
• Preparation of reference materials for certified matrix-based proficiency testing schemes

FAQ

What bottle sizes and materials are supported?
The standard configuration supports six 1 L containers; optional 2 L trays are available. Compatible vessel materials include borosilicate glass, HDPE, PTFE-coated PE, and ZHE-certified extraction bottles—each validated for chemical inertness under acidic and buffered leaching conditions.
Is the temperature uniformity verified across all six positions?
Yes—calibration reports (available upon request) confirm ≤±0.5°C deviation between positions at 25°C, 45°C, and 60°C setpoints, measured using NIST-traceable PT100 probes per ISO/IEC 17025 clause 5.10.
Can the device operate unattended for extended durations?
It is rated for continuous operation up to 120 hours under nominal load (6 × 1 L glass bottles); thermal and motor protection circuits remain active throughout, with automatic shutdown triggered only upon fault condition detection.
Does it support automated data logging without external hardware?
No—the onboard controller does not feature internal storage or USB export. Data logging requires connection to external Modbus-compatible recorders or LIMS-integrated gateways.
Are spare parts and service documentation available internationally?
DRETOP provides English-language technical manuals, CE/GB certification files, and OEM-grade replacement components—including aluminum trays, silicone gaskets, and PID heater assemblies—with lead times under 4 weeks for most regions via authorized distribution partners.