WIGGENS Digtor 22 C-U Benchtop Refrigerated High-Speed Centrifuge

Overview

The WIGGENS Digtor 22 C-U is a CE-certified, benchtop refrigerated high-speed centrifuge engineered for precise, reproducible separation of low- to mid-density biological and industrial samples—including water-in-oil emulsions, sediment suspensions, bacterial pellets, and coagulated particulates. Operating on fixed-angle rotor dynamics under controlled temperature conditions (–10 °C to +40 °C), it delivers a maximum rotational speed of 22,000 rpm and an achievable relative centrifugal force (RCF) of up to 48,700 × g—sufficient for efficient pelleting of prokaryotic cells, subcellular organelles, and fine colloidal aggregates. Its mechanical architecture integrates a brushless DC motor, active air-cooling system, and stainless-steel centrifuge chamber compliant with ISO 13485-aligned cleanability requirements. Designed for routine QC laboratories in petrochemical, lubricant, and pharmaceutical sectors, the Digtor 22 C-U meets critical international test standards including ASTM D91 (sediment determination in oils), D2709 (water content in diesel fuel), and API RP 2542 (centrifugal separation of water and solids from crude oil).

Key Features

• Refrigerated operation with independent compressor-based cooling and forced-air thermal management to minimize sample temperature drift during extended runs
• Automatic dual-mechanical lid lock with emergency manual release, anti-drop hinge mechanism, and transparent viewing window for real-time process monitoring
• TFT color touchscreen interface (≥3 m visibility) displaying real-time rpm, RCF, elapsed time, acceleration/deceleration profiles, and unbalance location (ULS)
• Programmable control with 40 user-defined protocols, password protection, last-parameter recall, and automatic rotor identification with overspeed protection
• PCBS (Progressive Control Braking System) offering 175 selectable acceleration/deceleration ramps to prevent resuspension of delicate pellets
• ULS (Unbalance Location System) providing immediate visual indication of the specific rotor position causing imbalance—enabling rapid correction without trial-and-error rebalancing
• Stainless-steel centrifuge chamber and autoclavable rotors/adapters (121 °C, 20 min, steam sterilization compatible)
• Noise emission <60 dB(A) at 1 m distance, meeting ISO 7779 and EN ISO 3744 acoustic performance criteria
• Integrated safety interlocks: automatic shutdown on lid opening, imbalance detection, overspeed, overtemperature, and rotor recognition failure

Sample Compatibility & Compliance

The Digtor 22 C-U accommodates standard laboratory tubes up to 100 mL capacity (4 × 100 mL configuration), including conical-bottom polypropylene tubes (6″ and 8″ lengths), pear-shaped centrifuge tubes, and 12.5 mL microcentrifuge tubes via interchangeable adapters. Its fixed-angle rotor design ensures high sedimentation efficiency for applications requiring compact pellet formation—particularly relevant for ASTM D893 (insolubles in lubricating oils) and DIN 51793 (determination of water and sediment in fuel oils). All electrical and mechanical safety systems conform to EN 61010-1 (safety requirements for electrical equipment) and EN 61010-2-020 (particular requirements for centrifuges). Electromagnetic compatibility follows EN 61326-1 and -2-6, ensuring stable operation in shared lab environments with sensitive analytical instrumentation.

Software & Data Management

While the Digtor 22 C-U operates as a standalone instrument without external PC dependency, its embedded firmware supports GLP-compliant data integrity practices. All run parameters—including speed, time, temperature, acceleration profile, and final RCF—are timestamped and stored locally in non-volatile memory. The system logs operational events (e.g., lid open/close, error codes, ULS triggers) with audit-trail capability. Though not FDA 21 CFR Part 11–certified out-of-the-box, the device’s parameter locking, password-protected program editing, and immutable runtime records align with basic GMP documentation expectations for non-clinical QC workflows. Optional RS232 or USB interfaces (not included) enable export of session logs for integration into LIMS or electronic lab notebooks.

Applications

• Routine analysis of water and sediment content in petroleum products per ASTM D91, D2709, and API RP 2542
• Quantification of insoluble contaminants in engine oils and hydraulic fluids (ASTM D893, D2273)
• Bacterial cell harvesting and washing in microbiology and fermentation QA/QC
• Clarification of crude enzyme extracts or lysates prior to chromatography or electrophoresis
• Sediment stability assessment in fuel formulations (ASTM D5546)
• Preparative isolation of mitochondria, nuclei, or membrane vesicles using angle-fixed rotors
• Quality control of emulsion-based pharmaceutical excipients and cosmetic formulations

FAQ

Is the Digtor 22 C-U suitable for continuous operation at maximum speed?
Yes—its brushless motor and thermally managed refrigeration system are rated for uninterrupted operation up to 99 hours, provided ambient temperature remains ≤25 °C and ventilation clearances are maintained.
Can I use non-WIGGENS rotors or adapters?
No—the system performs automatic rotor identification and enforces speed limits based on certified mass-radius profiles; unauthorized rotors will trigger overspeed lockout.
Does the centrifuge support gradient centrifugation?
Not natively—the fixed-angle configuration is optimized for pelleting rather than rate-zonal or isopycnic separations; swing-bucket rotors are not available for this model.
What is the minimum detectable imbalance threshold?
The ULS detects imbalances ≥5 g·cm (gram-centimeter) and identifies the exact angular position (1–6) of the offending tube slot.
Is validation documentation available for IQ/OQ protocols?
WIGGENS provides factory calibration certificates traceable to DAkkS-accredited standards, along with installation and operational qualification templates compliant with ISO/IEC 17025 and EU GMP Annex 15 guidelines.