LUXIANGYI TD-SZ Portable Water Treatment Centrifuge

Overview

The LUXIANGYI TD-SZ Portable Water Treatment Centrifuge is an engineered benchtop solution designed specifically for field-deployable pretreatment of surface water samples in compliance with the Technical Specification for On-site Pretreatment of Total Phosphorus in Surface Water (Trial), issued by the China National Environmental Monitoring Centre (CNEMC). It operates on sedimentation-based solid-liquid separation principles under controlled low-speed centrifugal force (RCF ≤ 2200 × g), enabling rapid phase separation of suspended particulates—particularly phosphorus-bound colloids and particulate matter—from raw water matrices with turbidity >500 NTU. Its compact architecture, low power draw (150 W), and compatibility with portable DC power sources make it suitable for mobile environmental monitoring laboratories, riverine survey teams, and emergency response units conducting manual total phosphorus analysis per HJ 694–2014 and ISO 15681-2:2016.

Key Features

• Brushless DC motor ensures maintenance-free operation, consistent torque delivery, and extended service life under variable load conditions.
• Compact footprint (330 × 420 × 280 mm) and lightweight design (14 kg) support rapid deployment in confined spaces—including vehicle-mounted labs and field shelters.
• Programmable timer with dual resolution: high-precision mode (1-second increments up to 99 min 59 s) and simplified mode (1-minute steps up to 99 min), meeting CNEMC’s minimum 1-minute centrifugation requirement for turbid water samples.
• Integrated safety system includes overvoltage protection, automatic rotor imbalance detection, and lid interlock mechanism compliant with IEC 61010-2-020.
• Monolithic food-grade silicone sealing gasket meets USP Class VI and GMP requirements for non-leaching, chemically inert sample containment.
• FDA-registered device design supports regulatory traceability in environmental testing workflows subject to GLP audit protocols.

Sample Compatibility & Compliance

The TD-SZ accepts standard polypropylene or polycarbonate centrifuge tubes (e.g., 500 mL conical tubes, 250 mL round-bottom tubes) and accommodates both 2-position (2 × 500 mL) and 4-position (4 × 250 mL) angular rotors. It is validated for aqueous environmental matrices including river water, lake water, reservoir effluent, and stormwater runoff—with demonstrated performance across turbidity ranges: ≤200 NTU (no centrifugation required), 200–500 NTU (optional pretreatment), and >500 NTU (mandatory per CNEMC specification). All mechanical and electrical components conform to RoHS 2011/65/EU and CE marking directives. The unit is compatible with ISO/IEC 17025-accredited laboratories performing method validation under EPA Method 365.4 and HJ 694–2014.

Software & Data Management

The TD-SZ operates via a dedicated microcontroller interface with no embedded software stack; all parameters are set manually via tactile keypad and LCD display. While it lacks network connectivity or data export functionality, its operational logs—including run time, speed setting, and cycle count—are retained in non-volatile memory for internal service tracking. For laboratories requiring full audit trails under 21 CFR Part 11, integration with external electronic lab notebooks (ELNs) or LIMS is achieved through manual entry of run identifiers and timestamped metadata. Calibration records and preventive maintenance logs must be maintained per ISO/IEC 17025 Clause 6.4.10.

Applications

• On-site pretreatment of surface water samples prior to colorimetric total phosphorus determination (e.g., ascorbic acid–molybdate blue method).
• Rapid clarification of high-turbidity environmental water for subsequent filtration, digestion, or instrumental analysis (ICP-OES, UV-Vis).
• Field validation of membrane fouling potential in decentralized water treatment pilot systems.
• Supporting national surface water quality monitoring programs requiring adherence to CNEMC technical specifications for mobile analytical units.
• Training platforms for environmental science students in standardized water sampling and preparation protocols.

FAQ

Is the TD-SZ certified for use in GLP-regulated laboratories?
Yes—the unit’s FDA registration, GMP-aligned sealing system, and documented calibration/maintenance pathways support its use in GLP environments when operated within defined SOPs and accompanied by instrument qualification records.
Can the centrifuge operate continuously on battery power?
When paired with the optional portable power station (DC 24 V output), the TD-SZ delivers up to 2 hours of uninterrupted operation at 2000 rpm—sufficient for ≥30 sequential 4-minute runs per full charge.
What rotor configurations are supported out-of-the-box?
The base configuration includes one angular rotor supporting either 2 × 500 mL or 4 × 250 mL tubes. Additional rotor types (e.g., swing-bucket variants) are available as catalog options but require separate ordering and validation.
Does the TD-SZ meet international standards for electromagnetic compatibility?
Yes—it complies with EN 61326-1:2013 for EMC emission and immunity in laboratory environments, verified during CE certification.
How is rotor imbalance detected and managed?
Real-time vibration sensing triggers immediate deceleration and audible/visual alerts if mass asymmetry exceeds ±5 g per tube position, preventing mechanical stress on the drive shaft and bearing assembly.