YiHeng BLF-6K / BLF-7K / BLF-10K Benchtop High-Speed Microcentrifuge

Overview

The YiHeng BLF-6K, BLF-7K, and BLF-10K series are compact, high-speed benchtop microcentrifuges engineered for precision separation of small-volume biological and chemical samples in resource-constrained or high-throughput laboratory environments. These instruments operate on the principle of centrifugal force generation via high-efficiency brushless DC motors, enabling rapid sedimentation of particles based on differences in density, size, and shape. With rated maximum speeds spanning 10,000 to 30,000 rpm—corresponding to relative centrifugal forces (RCF) up to approximately 16,000 × g—the BLF series delivers consistent performance across routine applications including nucleic acid pelleting, protein precipitation, cell harvesting, and microfiltration support. Their palm-sized footprint (175 × 148 × 118 mm) integrates robust mechanical architecture with acoustic optimization, making them suitable for shared lab benches, biosafety cabinets, and mobile diagnostic units where spatial efficiency and operational quietness are critical.

Key Features

• Ultra-low acoustic signature: Engineered motor and structural damping reduce operational noise to ≤54 dB(A), meeting ISO 7779-compliant acoustic emission thresholds for continuous use in open-lab settings.
• Rapid dynamic response: Achieves ≥90% of target speed within 5 seconds due to optimized rotor inertia and motor torque characteristics—minimizing cycle time without compromising thermal stability.
• Passive vibration suppression: Dual-stage elastomeric isolation mounts and balanced rotor-housing interface ensure <0.05 mm peak-to-peak displacement under full-load operation at maximum speed.
• Tool-free rotor interchangeability: Patented snap-fit rotor retention system allows secure installation and removal of fixed-angle microrotors (2 mL × 6 configuration) without wrenches, screwdrivers, or calibration recalibration.
• Dual braking modes: Programmable deceleration profiles include free-coast stop (≤15 s) and lid-activated electromagnetic brake stop (≤3 s), enhancing workflow safety and throughput in time-sensitive protocols.
• Thermally stable enclosure: Aluminum alloy housing with integrated heat-dissipating fins maintains ambient rotor temperature rise <8°C after 15 min continuous operation at 30,000 rpm.

Sample Compatibility & Compliance

The BLF series accommodates standard 0.2–2.0 mL conical-bottom microcentrifuge tubes (e.g., PCR strips, spin columns, and filter cartridges), supporting common sample matrices including aqueous buffers, ethanol precipitates, serum supernatants, and lysed cellular suspensions. All models conform to IEC 61010-1:2010 Edition 3.0 for safety requirements of electrical equipment for measurement, control, and laboratory use. Mechanical design complies with EN 61326-1:2013 for electromagnetic compatibility (EMC) in laboratory environments. While not certified for Class II biological containment, the sealed rotor chamber and smooth internal surfaces facilitate decontamination per CDC/NIH biosafety guidelines. No hazardous materials or regulated refrigerants are used in construction.

Software & Data Management

These centrifuges operate via a dedicated tactile push-button interface with LED status indicators—no external software, drivers, or PC connectivity required. All operational parameters (speed setpoint, run time, acceleration/deceleration mode) are retained in non-volatile memory across power cycles. Though lacking digital logging or audit trail functionality, the control logic meets baseline GLP documentation requirements when paired with manual logbook entries. For laboratories implementing 21 CFR Part 11 compliance, external time-stamped video recording or connected environmental monitoring systems may be deployed alongside instrument use to satisfy traceability needs.

Applications

• Routine nucleic acid purification workflows requiring rapid pellet formation from spin-column eluates.
• Pre-analytical sample preparation for HPLC, LC-MS, and ELISA assays involving clarified supernatants or precipitated proteins.
• Point-of-care diagnostics where low-power, portable centrifugation is needed for plasma separation from capillary blood.
• Teaching laboratories emphasizing hands-on centrifugation principles, rotor dynamics, and RCF calculations.
• Quality control testing of colloidal suspensions, nanoparticle dispersions, and emulsion stability under standardized g-force conditions.

FAQ

What is the maximum relative centrifugal force (RCF) achievable with the BLF-10K model?

RCF depends on rotor radius and rotational speed; typical RCF values range from ~10,000 × g to ~16,000 × g across the BLF series at full speed—exact values require calculation using the formula RCF = 1.118 × 10⁻⁵ × r × N² (r in mm, N in rpm).
Are rotors autoclavable?

Yes—standard aluminum fixed-angle rotors are compatible with standard 121°C, 15 psi steam autoclaving for up to 30 cycles; verify rotor-specific maintenance intervals in the user manual.
Does this centrifuge support timer-based automatic shutdown?

Yes—run time can be preset from 10 seconds to 99 minutes and 59 seconds, with audible and visual end-of-run indication.
Can it be operated inside a cold room?

Ambient operating temperature range is +5°C to +40°C; condensation risk below 10°C requires pre-equilibration and moisture-resistant placement.
Is there a service calibration certificate available?

Factory calibration reports (speed accuracy ±20 rpm, timer accuracy ±0.5%) are provided with each unit; third-party ISO/IEC 17025 calibration services are supported upon request.