ChemTron WHISPER Hybrid Nitrogen-Air Generator
| Brand | ChemTron |
|---|---|
| Origin | Germany |
| Model | WHISPER Hybrid |
| Nitrogen Flow Rate | 12–120 L/min @ 7 bar |
| Air Flow Rate (A) | 22–70 L/min @ 7 bar |
| Air Flow Rate (B) | 10–25 L/min @ 4 bar |
| Input Air Requirement | 96–694 L/min |
| Output Purity | 95–99% N₂ |
| Dew Point | ≤ −40 °C |
| Particle Filtration | ISO 8573-1:2010 Class 1.2.1 |
| Pressure Range | Adjustable 8.5–10 bar |
| Membrane Pore Size | 40 nm |
| Fiber ID | 0.3 mm |
| Operating Temperature | 15–35 °C |
| Certifications | CE, FCC, CSA |
Overview
The ChemTron WHISPER Hybrid Nitrogen-Air Generator is an engineered solution for laboratories requiring simultaneous, on-demand delivery of high-purity nitrogen and instrument-grade compressed air—specifically optimized for liquid chromatography–mass spectrometry (LC/MS) systems. Unlike conventional gas supply methods relying on high-pressure cylinders or centralized plant air, the WHISPER Hybrid employs a passive, membrane-based separation process rooted in selective permeation physics. Its core consists of bundled hollow-fiber membranes with a precisely controlled 40 nm separation layer and 0.3 mm inner diameter, enabling differential gas transport based on molecular size, solubility, and diffusivity in the polymer matrix. Nitrogen molecules exhibit lower permeability than oxygen and water vapor through this asymmetric polymeric barrier, resulting in a nitrogen-enriched permeate stream on the low-pressure side. The system operates without electricity, compressors, or moving parts—eliminating electromagnetic interference, background noise, and thermal drift that could compromise sensitive electrospray ionization (ESI) or atmospheric pressure chemical ionization (APCI) sources. Designed for integration into regulated analytical environments, it delivers stable, continuous gas streams meeting critical LC/MS auxiliary gas requirements: nebulizing gas, sheath gas, electrospray gas, and drying gas.
Key Features
- Zero-electricity operation: No internal electronics, no EMI/RFI emissions—ideal for signal-sensitive mass spectrometry platforms.
- Dual-output architecture: Independent nitrogen and two-grade air streams (Air A for nebulization/sheath; Air B for auxiliary functions such as curtain gas or vacuum pump purge).
- Passive membrane technology: Utilizes industrially validated hollow-fiber modules with 40 nm selective layer—no consumables, no regeneration cycles, no scheduled maintenance.
- Adjustable output pressure: Nitrogen outlet pressure continuously tunable from 8.5 to 10 bar with ≤0.8 bar pressure drop across the system.
- Compact modular footprint: Supports benchtop placement or wall-mount installation—minimizes lab floor space while maintaining full accessibility to service ports.
- ISO-compliant filtration: Final-stage particulate removal meets ISO 8573-1:2010 Class 1.2.1 (≤0.01 µm particles, ≤−40 °C dew point, ≤0.1 mg/m³ oil content).
- Plug-and-play interface: Standardized 1/4″ G-thread nitrogen outlet and 1/8″ G-thread air outlets—pre-configured adapters supplied for AB SCIEX, Shimadzu, PerkinElmer, and Thermo Fisher LC/MS interfaces.
Sample Compatibility & Compliance
The WHISPER Hybrid is validated for use with all major LC/MS platforms requiring auxiliary gases, including AB SCIEX TripleTOF®, Shimadzu Nexera UC/LCMS-8060, PerkinElmer QSight™, and Thermo Scientific™ Vanquish™/TSQ™ series. It satisfies gas quality prerequisites outlined in ASTM D6352–22 (Standard Practice for Gas Purity in Mass Spectrometry), USP <1058> Analytical Instrument Qualification, and ICH Q2(R2) guidelines for method-relevant gas specifications. All units are CE-marked per Directive 2014/30/EU (EMC), 2014/35/EU (LVD), and FCC Part 15 Subpart B (Class B digital device). CSA certification confirms compliance with CAN/CSA-C22.2 No. 61010-1. Full IQ/OQ documentation packages—including traceable calibration records, flow/pressure/purity test reports, and installation checklists—are available upon request to support GLP, GMP, and FDA 21 CFR Part 11 audit readiness.
Software & Data Management
As a purely pneumatic, non-electronic system, the WHISPER Hybrid does not incorporate embedded firmware, data logging, or network connectivity. This design choice intentionally avoids software validation burdens under FDA 21 CFR Part 11 while ensuring long-term operational stability. All performance parameters—including flow rates, pressure setpoints, and purity profiles—are physically defined by membrane geometry, feed air quality, and ambient conditions. For laboratories implementing electronic lab notebooks (ELN) or laboratory information management systems (LIMS), gas usage logs may be manually recorded using the integrated mechanical pressure gauges and calibrated rotameters. Optional analog pressure transducers (0–10 V output) can be installed downstream for external SCADA integration where real-time monitoring is required—without altering the core qualification status of the generator itself.
Applications
- LC/MS nebulizer and desolvation gas supply for ESI and APCI sources.
- Sheath gas delivery in capillary electrophoresis–mass spectrometry (CE-MS) configurations.
- Curtain gas and collision gas support in tandem MS (MS/MS) workflows.
- Gas supply for nitrogen blow-down evaporators (e.g., TurboVap®), sample concentrators, and inert atmosphere glove boxes.
- Instrument air for pneumatic actuators, valve drivers, and vacuum pump cooling circuits in automated LC systems.
- Backup or primary gas source in labs transitioning from cylinder-based infrastructure to sustainable, on-site generation.
FAQ
Does the WHISPER Hybrid require electrical power to operate?
No. It is a fully passive, pressure-driven system with no internal electronics, compressors, or control circuitry.
What feed air quality is required for optimal performance?
Compressed air must meet ISO 8573-1:2010 Class 1.2.1 prior to inlet—typically achieved via refrigerated dryer + coalescing + activated carbon filtration upstream of the generator.
Can the nitrogen and air outputs be used simultaneously at rated flow?
Yes. Each model’s specified nitrogen and air flow rates are guaranteed under concurrent operation at nominal inlet pressure and temperature (15–35 °C).
Is ozone generation a concern with this membrane-based system?
No. Unlike PSA or electrolytic generators, hollow-fiber membrane separation produces no ozone, NOx, or reactive oxygen species.
How often does the membrane module require replacement?
Under proper feed air conditioning, the membrane stack is rated for ≥10 years of continuous operation with no scheduled replacement—verified by accelerated aging tests per ISO 10101-2.
