Xiangyi CTK32R Automated Cap-Removal Refrigerated Benchtop Centrifuge

Overview

The Xiangyi CTK32R is a purpose-engineered benchtop refrigerated centrifuge integrating automated cap removal functionality specifically for clinical and diagnostic laboratories processing vacuum blood collection tubes. Unlike conventional centrifuges requiring manual decapping post-separation—introducing risks of sample re-mixing, aerosol generation, operator exposure, and workflow bottlenecks—the CTK32R performs synchronized centrifugation and mechanical cap ejection in a single, closed-cycle operation. Its core separation principle relies on horizontal rotor sedimentation under controlled low-speed centrifugal force (up to 2980 × g), optimized for phase separation of whole blood into serum/plasma and cellular fractions while preserving integrity of large organelles and viral particles. The integrated refrigeration system maintains precise thermal control (−20 °C to +40 °C, ±1 °C accuracy) using an eco-friendly R134a compressor, ensuring temperature-sensitive analytes remain stable during prolonged runs or ambient fluctuations.

Key Features

• Automated cap removal mechanism with >90% success rate across standard 75 mm and 100 mm vacuum blood tubes—eliminates manual handling and associated biosafety hazards.
• AC variable-frequency motor enabling high-precision speed regulation (0–4000 rpm), rapid acceleration/deceleration profiles, and consistent torque delivery across load variations.
• Intelligent RCF calculation engine automatically updates real-time relative centrifugal force values based on selected rotor radius and rotational speed—displayed continuously on the 5.7-inch LCD touchscreen interface.
• Dual-stage passive vibration damping architecture combined with automatic dynamic balancing ensures stable operation at all speeds and loads, reducing mechanical stress and extending bearing life.
• Electronically interlocked lid safety system: centrifuge will not initiate rotation unless lid is fully secured; immediate rotor stoppage occurs if lid is forcibly opened during operation.
• Comprehensive thermal management including pre-cooling capability, ambient temperature compensation, and uniform chamber airflow distribution for reproducible temperature gradients.

Sample Compatibility & Compliance

The CTK32R accommodates standard 13×75 mm and 13×100 mm evacuated blood collection tubes (e.g., BD Vacutainer®, Greiner Bio-One Vacuette®) without adapter modification. Its 4×8 horizontal rotor configuration supports standardized phlebotomy workflows aligned with CLSI H26-A3 and ISO 15189:2022 requirements for preanalytical phase integrity. The instrument’s sealed cap-removal chamber minimizes aerosol release, supporting compliance with OSHA Bloodborne Pathogens Standard (29 CFR 1910.1030) and WHO Laboratory Biosafety Manual (4th ed.) containment Level 2 practices. All electrical and refrigeration components meet IEC 61010-1:2010 safety standards for laboratory equipment.

Software & Data Management

The embedded control firmware supports time-stamped run logging with audit trail capabilities—including date/time, rotor ID, speed, RCF, temperature setpoint, duration, and cap-removal status per tube position. While the CTK32R does not feature network connectivity or remote software integration, its local event log meets basic GLP documentation requirements for traceability. Data export is supported via USB interface for offline review; all parameter settings are password-protected to prevent unauthorized configuration changes. Firmware adheres to principles outlined in FDA 21 CFR Part 11 for electronic records where local validation protocols are implemented by end users.

Applications

• Routine serum and plasma preparation in clinical chemistry and immunology labs.
• Pre-analytical processing for coagulation studies (e.g., citrated plasma isolation).
• High-throughput blood bank specimen handling prior to serological testing.
• Viral load sample prep where minimal mechanical disturbance is critical for downstream PCR stability.
• Research applications involving subcellular fractionation of erythrocyte membranes or platelet-rich plasma (PRP) separation.
• Quality control environments requiring repeatable, operator-independent decapping prior to automated analyzer loading.

FAQ

Does the CTK32R support rotor autoclaving or chemical sterilization?
No—the horizontal rotor assembly is constructed from anodized aluminum alloy and is not designed for autoclave cycles. Surface disinfection with 70% ethanol or hospital-grade quaternary ammonium compounds is recommended between runs.
Can the cap-removal function be disabled for non-vacuum tube applications?
Yes—cap ejection is programmatically isolated; users may select “centrifuge-only” mode via the touchscreen interface, retaining full low-speed separation capability for microtubes or PCR strips.
What maintenance intervals are recommended for the refrigeration system?
Compressor performance should be verified annually; condenser coils require biweekly dust removal. Refrigerant integrity checks are advised every 24 months or after any physical impact to the rear housing.
Is the CTK32R compliant with European CE marking directives?
Yes—the unit carries CE marking under the EU Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU, with technical documentation available upon request for regulatory submission.
How is rotor imbalance detected and compensated?
The system employs real-time current draw monitoring and angular acceleration profiling; if imbalance exceeds 5 g·cm threshold, audible/visual alerts activate and rotation halts before reaching operational speed.