Gerhardt TurboScrub Waste Gas and Liquid Treatment System TUR/K

Overview

The Gerhardt TurboScrub Waste Gas and Liquid Treatment System TUR/K is a compact, self-contained wet-scrubbing unit engineered for safe and efficient abatement of acidic, alkaline, or water-soluble gaseous emissions generated during routine laboratory operations—particularly in digestion, distillation, titration, and sample preparation workflows. Operating on the principle of turbulent contact between counter-current gas and liquid phases within a structured packed column, the TUR/K achieves high-efficiency mass transfer without chemical reagents or disposable media. Its design follows the fundamental engineering criteria of gas–liquid absorption thermodynamics and hydrodynamic stability, ensuring consistent performance across variable flow rates (typical range: 5–30 L/min) and concentration profiles. Unlike passive condensers or activated carbon traps, the TUR/K actively conditions both gaseous effluents and associated condensate streams, enabling integrated treatment of vapors and rinse waters from reflux or distillation apparatuses.

Key Features

• Robust stainless-steel and chemically resistant polymer construction, rated for continuous operation with HCl, HNO₃, NH₃, SO₂, and organic solvent vapors
• Turbulent flow geometry optimized to maximize interfacial surface area while minimizing pressure drop (< 150 Pa at nominal flow)
• No consumables required: operation relies solely on recirculated deionized or tap water; optional pH-controlled dosing module available for enhanced neutralization
• Integrated overflow protection and level monitoring to prevent sump dry-run or overflow incidents
• Low-energy demand (205 W) with silent centrifugal pump and maintenance-free induction motor
• Modular footprint (330 × 450 × 420 mm) designed for under-bench installation or integration into fume hood exhaust ductwork

Sample Compatibility & Compliance

The TUR/K is validated for use with aqueous-based laboratory processes generating low-to-moderate concentration gaseous byproducts—including Kjeldahl digestion, steam distillation of ammonium salts, acid digestion of biological matrices, and volatile base/acid titrations. It is not intended for halogenated hydrocarbons, non-polar VOCs, or particulate-laden streams without upstream filtration. The system conforms to DIN EN 14175-3 (fume hood performance), VDI 3870 Part 1 (laboratory exhaust air cleaning), and supports compliance with ISO/IEC 17025:2017 clause 6.4.2 (environmental control of testing facilities). When deployed in regulated environments, its mechanical simplicity and absence of software controls facilitate straightforward validation and audit documentation under GLP or GMP frameworks.

Software & Data Management

The TUR/K operates as a fully autonomous analog device with no embedded firmware, touchscreen interface, or data logging capability. This architecture eliminates cybersecurity vulnerabilities, reduces qualification burden, and ensures deterministic behavior across power cycles and ambient temperature fluctuations (operating range: 5–40 °C). For laboratories requiring traceability, optional analog signal outputs (4–20 mA) for pump current and sump level can be interfaced with external SCADA or LIMS systems via standard industrial I/O modules. No FDA 21 CFR Part 11 compliance is applicable due to the absence of electronic records or signature functionality—consistent with ICH Q7 Annex 12 guidance for “non-critical utility equipment.”

Applications

• Continuous scrubbing of HCl and NOₓ vapors from microwave-assisted acid digestions
• Neutralization and capture of ammonia liberated during automated Kjeldahl nitrogen determination
• Conditioning of condensate from steam distillation units prior to discharge into sanitary drains
• Integration with Gerhardt Vapodest or UTI distillation systems to meet local wastewater pH discharge limits (e.g., pH 6–9 per EU Directive 2006/11/EC)
• Pre-treatment of vent lines from automated titrators and autodigesters to reduce downstream corrosion in exhaust ducting

FAQ

Does the TUR/K require periodic replacement of scrubbing media?

No—the system uses only recirculated water and relies on physical absorption and dilution; no cartridges, resins, or chemical reagents are consumed.
Can it handle organic solvent vapors such as acetone or methanol?

It is effective for water-miscible organics at low concentrations (< 500 ppm); for higher loads or immiscible solvents, additional phase separation or activated carbon polishing is recommended.
Is installation certification required?

While no formal third-party certification is mandated, connection to fixed exhaust ducting must comply with local building codes and DIN 1946-7 for laboratory ventilation safety.
What maintenance intervals are recommended?

Visual inspection every 6 months; sump cleaning and pump impeller check annually—no calibration or sensor drift concerns due to purely mechanical operation.
How does it interface with Gerhardt’s automated analysis platforms?

Via dry-contact relay outputs (standard) or optional analog signals; compatible with Gerhardt’s UniControl software for status monitoring within multi-instrument networks.