BIORIDGE TG12X Capillary Blood Centrifuge

Overview

The BIORIDGE TG12X Capillary Blood Centrifuge is a precision-engineered benchtop centrifuge specifically designed for hematological applications requiring high reproducibility in capillary tube-based hematocrit (Hct) determination and micro-volume sample separation. It operates on the principle of sedimentation under controlled centrifugal force, enabling rapid stratification of whole blood into packed red blood cells (RBCs), buffy coat, and plasma within standardized glass or plastic capillary tubes (75 mm length, 1.0–1.2 mm internal diameter). Its optimized rotor geometry and brushless DC motor deliver stable rotational dynamics across the full speed range (0–12,000 rpm), ensuring consistent g-force application (up to 4,390 × g) critical for CLIA- and CAP-compliant hematocrit assays. The unit meets essential safety requirements outlined in IEC 61010-2-020 for laboratory centrifuges and supports routine operation in clinical laboratories, point-of-care testing (POCT) environments, and academic hematology research settings.

Key Features

• Microprocessor-controlled digital interface with real-time rpm/RCF display and programmable timer (0–99 minutes) for repeatable protocol execution
• Brushless DC motor delivering low-maintenance operation, minimal heat generation, and extended service life (>20,000 hours MTBF)
• Dual-capacity rotor configuration: accommodates either 24 standard hematocrit capillaries (aligned in two concentric rings) or four 50 mL syringes for flexible workflow adaptation
• Integrated electronic lid interlock system that halts rotation immediately upon lid opening—compliant with IEC 61010-2-020 mechanical safety clauses
• Overspeed and imbalance detection circuits automatically decelerate the rotor if operational thresholds are exceeded
• Acoustically damped housing maintains noise levels below 65 dB(A) at 1 m distance—suitable for shared laboratory spaces
• Compact footprint (230 × 310 × 240 mm) enables placement on standard lab benches without dedicated ventilation or floor mounting

Sample Compatibility & Compliance

The TG12X accepts standardized capillary tubes conforming to ISO 7437:2004 (capillary tubes for hematocrit determination) and ASTM D7279-16 (standard practice for capillary blood collection). It is validated for use with heparinized, EDTA-anticoagulated, and citrated whole blood specimens. Rotors are constructed from corrosion-resistant anodized aluminum alloy, certified for repeated autoclaving (121 °C, 20 min) per ISO 17664. The instrument supports GLP documentation workflows through timestamped run logs stored in non-volatile memory. While not FDA 510(k)-cleared as an IVD device, its performance characteristics align with CLSI H26-A3 (Method Comparison and Bias Estimation Using Patient Samples) and ISO 15189:2022 clause 5.5.2 (equipment verification for quantitative hematology testing).

Software & Data Management

The TG12X operates as a standalone instrument with no external software dependency. All operational parameters—including speed, time, acceleration/deceleration profiles, and cumulative runtime—are stored in embedded flash memory with battery-backed retention. Run history (last 100 cycles) is accessible via the front-panel interface and includes start/stop timestamps, achieved RCF, and fault codes (e.g., E01 = lid open during run, E03 = imbalance detected). Audit trail functionality satisfies basic data integrity requirements under 21 CFR Part 11 Subpart B when paired with laboratory information systems (LIS) that capture exported run metadata via RS-232 serial output (optional accessory cable available).

Applications

• Routine hematocrit (Hct) measurement in clinical pathology and emergency departments using the microhematocrit method (CLSI EP15-A3)
• Separation of micro-volume biological samples (≤100 µL) including cerebrospinal fluid (CSF), synovial fluid, and ocular aqueous humor
• Preparation of platelet-poor plasma (PPP) and platelet-rich plasma (PRP) for coagulation studies and regenerative medicine protocols
• Concentration of microbial suspensions (e.g., Mycobacterium tuberculosis sputum sediments) prior to acid-fast staining
• Processing of capillary-collected dried blood spots (DBS) for metabolite extraction in newborn screening programs

FAQ

What capillary tube specifications are compatible with the TG12X?
Standard hematocrit capillaries measuring 75 mm in length with an internal diameter of 1.0–1.2 mm (e.g., StatSpin® or Hawksley-type tubes) are fully supported.
Does the TG12X support variable acceleration and deceleration rates?
No—the unit employs fixed ramp profiles optimized for capillary integrity; however, the “soft stop” function minimizes resuspension of sedimented RBC columns.
Is calibration traceable to national standards?
Yes—factory calibration uses NIST-traceable tachometers and RCF calculators; users may perform periodic verification using ISO 15197-compliant reference centrifuges.
Can the rotor be sterilized in an autoclave?
Yes—the aluminum rotor is rated for 121 °C, 20-minute autoclave cycles up to 500 cycles; avoid prolonged exposure to alkaline cleaning agents.
What maintenance is required beyond routine cleaning?
Annual inspection of brushless motor bearings and electronic door lock actuator is recommended; no user-serviceable lubrication points exist.