WIGGENS Digtor 22 C-8 Benchtop Centrifuge
| Brand | WIGGENS |
|---|---|
| Origin | Germany |
| Model | Digtor 22 C-8 |
| Instrument Type | Benchtop Centrifuge |
| Speed Range | up to 3000 rpm |
| Max RCF | 2425 × g |
| Max Capacity | 8 × 100 mL (8" or 6" tubes) |
| Dimensions | 540 × 650 × 400 mm |
| Noise Level | <60 dB(A) |
| Temperature Range | RT+5°C to 80°C (±1°C accuracy) |
| Compliance | ASTM D91, D96, D893, D1796, D2273, D2709, D2711, D4007, D5546 |
Overview
The WIGGENS Digtor 22 C-8 Benchtop Centrifuge is a precision-engineered, thermally regulated centrifugation system designed for standardized sediment and water separation in petroleum-based fluids—specifically engineered to meet the rigorous procedural requirements of ASTM, ISO, IP, API, and DIN test methods. Operating on fixed-angle or horizontal rotor configurations (with compatibility for 6″, 8″, pear-shaped, and 12.5 mL tubes), it delivers reproducible gravitational forces up to 2425 × g at a maximum rotational speed of 3000 rpm. Unlike general-purpose benchtop units, the Digtor 22 C-8 integrates active temperature control (RT+5°C to 80°C), programmable acceleration/deceleration profiles, and real-time RCF calculation based on actual rotor geometry and tube loading—ensuring strict adherence to method-defined thermal and mechanical conditions during extended-duration analyses such as oil sludge quantification, emulsion stability assessment, and deposit formation kinetics.
Key Features
- TFT color display with >3 m visibility, showing real-time RPM, RCF, elapsed time, acceleration/deceleration status, and unbalance position (ULS)
- Precision speed control in 10 rpm / 10 × g increments; automatic rotor recognition and overspeed protection
- 175-step programmable PCBS (Progressive Control Braking System) for tailored acceleration/deceleration slopes—minimizing post-centrifugation resuspension of sediments
- 40 user-programmable protocols with password protection; automatic recall of last-used parameters
- Integrated heating module with cavity-mounted Pt100 sensor, overtemperature cutoff, and thermal insulation to maintain ±1°C stability across full operating range
- Brushless DC motor with maintenance-free operation and <60 dB(A) acoustic emission at rated load
- Mechanical + electronic dual-lid interlock system with emergency manual release, anti-drop lid mechanism, and transparent viewing window
- Stainless steel centrifuge chamber (AISI 304), autoclavable rotors and adapters, and forced-air cooling to limit internal thermal drift
- Pre-heating function activated after rotor loading—enabling temperature equilibration prior to spin initiation
Sample Compatibility & Compliance
The Digtor 22 C-8 supports standardized sample containers per ASTM D96 (water and sediment in fuel oils), ASTM D2709 (water and sediment in aviation turbine fuels), and ISO 9030 (determination of water and sediment in crude oil). Its 8-position horizontal rotor accommodates 100 mL glass or polymer tubes (6″ or 8″ height), conical pear-shaped vessels, and 12.5 mL centrifuge tubes—each validated for use under GLP-compliant workflows. The unit complies with EN 61010-1 (safety requirements for electrical equipment), EN 61010-2-020 (particular safety requirements for laboratory centrifuges), EN 61326-1/-2-6 (EMC standards), and carries CE marking per EU Directives 2011/65/EU (RoHS), 2012/19/EU (WEEE), 2014/30/EU (EMC), 2014/35/EU (LVD), and 98/79/EC (IVDR). All firmware operations support audit trail generation for 21 CFR Part 11–aligned environments when integrated with compliant LIMS platforms.
Software & Data Management
The embedded microcontroller enables full parameter logging—including start/stop timestamps, actual vs. setpoint RCF, temperature deviation history, unbalance events, and brake slope selection—for traceable post-run analysis. Time-stamped protocol execution records are stored locally (non-volatile memory) and exportable via USB interface in CSV format. Programmable timers support stepwise sequences (up to 99 h, 1 s resolution), including ramp-hold-cool cycles and auto-lid opening upon completion. Optional GRS (Gas Removal System) integration facilitates inert-atmosphere processing for oxidation-sensitive samples. Password-protected access levels (operator/administrator) ensure role-based parameter modification rights—supporting ISO/IEC 17025 documentation requirements.
Applications
- Quantitative determination of water and sediment content in lubricants, diesel, jet fuel, and crude oil per ASTM D91/D96/D2709
- Analysis of insoluble sludge and varnish precursors in turbine oils (ASTM D893, D4007)
- Assessment of fuel filterability and stability under thermal stress (ASTM D2273, D2711)
- Accelerated aging studies of used oil samples (ASTM D5546, ISO 3734)
- Separation of coalesced water phases in emulsified industrial fluids (ISO 9030, IP 75)
- Preparative sediment isolation for FTIR, GC-MS, or elemental analysis of particulate contaminants
FAQ
What standards does the Digtor 22 C-8 comply with for petroleum testing?
It meets ASTM D91, D96, D893, D1796, D2273, D2709, D2711, D4007, D5546; API RP 2542 and 2548; ISO 3734 and 9030; IP 75 and 359; BS 4385; DIN 51793; and NF M07-020.
Can the unit operate without heating enabled?
Yes—temperature control is fully independent of centrifugation; ambient-mode operation is default unless heating is explicitly selected.
Is rotor identification automatic?
Yes—the system detects rotor type and geometry upon insertion and dynamically recalculates RCF using actual radius and tube dimensions.
What safety certifications apply to this model?
CE-marked per EN 61010-1, EN 61010-2-020, EN 61326-1, EN 61326-2-6, and EN 61010-2-010; compliant with EU RoHS, WEEE, EMC, LVD, and IVDR directives.
How is unbalance detected and managed during operation?
ULS (Unbalance Location System) identifies the specific tube position causing imbalance and displays its number on-screen; automatic shutdown occurs if threshold exceeds 5 g·cm.
