Exhaust System Scrubber ES1B
Benchtop chemical fume scrubber with dual-inlet 2×30 L/min suction flow, combining alkaline solution neutralization and distilled water washing for effective laboratory vapor treatment. Model ES1B; 1L alkaline and 1L distilled water reservoirs; 10–25% lye concentration; 120W; 330×350×310mm.
Louise Corscadden, PhD
Director of Science · ConductScience
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The Exhaust System Scrubber ES1B is a benchtop acid and alkali neutralization system for laboratory environments handling corrosive vapors, fumes, and exhaust gases. A built-in negative-pressure suction pump draws exhaust through two inlets at 30 L/min each, passing the gas stream through a sequential two-stage scrubbing process: alkaline solution neutralization followed by distilled water washing. The large gas-liquid contact surface delivers high neutralization efficiency, producing pollution-free exhaust.
Key Features
- Negative-pressure suction pump with high flow rate, long service life, and simple operation
- Two-stage absorption — alkaline neutralization followed by distilled water wash — ensures reliable vapor removal
- Large gas-liquid contact surface for high neutralization efficiency and pollution-free exhaust
- Safe, reliable construction; neutralization solution is quick and easy to replace
Technical Specifications
| Parameter | ES1B |
|---|---|
| Air Inlet | Two-way |
| Suction Flow | 2 × 30 L/min |
| Alkaline Solution Bottle | 1 L |
| Distilled Water Bottle | 1 L |
| Lye Concentration | 10–25% |
| Power Supply | AC 220V, 50/60 Hz |
| Power Consumption | 120 W |
| Net Weight | 10 kg |
| External Dimensions (W×D×H) | 330 × 350 × 310 mm |
| Package Dimensions (W×D×H) | 460 × 460 × 460 mm |
| Gross Weight | 17 kg |
How It Works
The ES1B operates through a two-stage chemical scrubbing process that combines alkaline neutralization with aqueous absorption. Contaminated air enters through the adjustable 8-10mm diameter interface and is drawn through the system by an internal blower operating at 18 L/min flow rate.
In the first stage, vapors pass through the alkaline solution bottle containing 10-35% basic solution, where acid vapors undergo neutralization reactions and soluble contaminants are absorbed. The partially treated air stream then passes through the second stage distilled water bottle, where remaining water-soluble compounds are captured and any residual alkaline carryover is diluted.
The dual-bottle configuration ensures effective treatment of both acidic and basic vapors while preventing cross-contamination between neutralizing and washing stages. The 120W motor maintains consistent airflow throughout the scrubbing process, enabling continuous operation during extended laboratory procedures.
Features & Benefits
Automation Level
- semi-automated
Extraction Flow
- 18L/min
Air Extraction Interface
- Φ8~10mm(Reducer fittings are available)
Alkaline Solution Bottle
- 1.7L
Distilled Water Bottle
- 1.7L
Alkali Concentration
- 10%~35%
Consumption
- 120W
Package Size(W*H*D)mm
- 470*480*450
Gross Weight(kg)
- 16.5
Brand
- ConductScience
Research Domain
- Analytical Chemistry
- Environmental Monitoring
- Industrial Hygiene
- Materials Science
- Microbiology
- Pharmaceutical QC
Power/Voltage
- AC220V, 50Hz
Weight
- 36.38 kg
Dimensions
- L: 18.9 mm
- W: 18.5 mm
- H: 0.39 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Extraction Flow Rate | 18 L/min continuous airflow | Basic models often provide lower flow rates unsuitable for higher vapor generation | Sufficient capacity for most benchtop chemical processes without over-ventilation energy waste |
| Treatment Capacity | Dual 1.7L bottles for alkaline solution and distilled water | Single-stage systems with smaller reservoir capacity | Extended operation time and more thorough vapor neutralization through two-stage treatment |
| Alkaline Concentration Range | 10-35% adjustable concentration | Fixed concentration systems with limited chemical compatibility | Optimizable neutralization efficiency for different acid types and vapor loads |
| Exhaust Interface | 8-10mm adjustable interface with reducer fittings | Fixed diameter connections requiring custom adaptations | Flexible integration with existing laboratory exhaust setups and equipment |
| Form Factor | Benchtop design (470×480×450mm) | Larger systems requiring permanent installation or floor space | Point-of-use placement for immediate vapor control without facility modifications |
The ES1B offers balanced extraction capacity and treatment efficiency in a benchtop format, providing dual-stage chemical scrubbing with adjustable alkaline concentrations. The system's 18 L/min flow rate and flexible exhaust interface accommodate various laboratory applications while maintaining compact installation requirements.
Practical Tips
Verify extraction flow rate using an anemometer at the exhaust interface during initial setup and periodic maintenance intervals.
Why: Consistent airflow ensures proper vapor capture and treatment efficiency throughout system operation.
Inspect solution bottles weekly for precipitate formation, discoloration, or pH changes that indicate neutralization capacity depletion.
Why: Early detection prevents breakthrough of untreated vapors and maintains worker safety.
Position the exhaust interface within 6 inches of the vapor source and ensure capture velocity exceeds vapor generation rate.
Why: Proper positioning maximizes capture efficiency and prevents vapor escape to the laboratory environment.
Wear appropriate PPE when changing solutions and ensure proper ventilation during bottle replacement procedures.
Why: Solution bottles may contain concentrated chemicals and reaction byproducts requiring safe handling protocols.
Log solution change dates, vapor types processed, and any unusual observations to establish maintenance schedules and performance baselines.
Why: Documentation enables optimization of operation parameters and prediction of maintenance requirements.
If vapor breakthrough is detected, immediately check solution levels, pH, and airflow before investigating system blockages.
Why: Systematic troubleshooting identifies the most common failure modes quickly to restore safe operation.
Setup Guide
What’s in the Box
- ES1B main unit (typical)
- Two 1.7L solution bottles (typical)
- Power cord for AC220V connection (typical)
- Reducer fittings for exhaust interface (typical)
- User manual and operation guide (typical)
- Chemical compatibility chart (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, along with technical support for installation and operation guidance.
Compliance
What types of chemical vapors can the ES1B effectively neutralize?
The system is designed for acid vapors that react with alkaline solutions (10-35% concentration) and water-soluble compounds. Consult the chemical compatibility chart for specific reagent compatibility and neutralization effectiveness.
How often do the solution bottles need to be changed during operation?
Change frequency depends on vapor load and concentration. Monitor solution pH and clarity; replace alkaline solution when neutralization capacity is exhausted and distilled water when contamination is visible.
Can the extraction flow rate be adjusted for different applications?
The system operates at a fixed 18 L/min flow rate. For applications requiring different flow rates, consult product datasheet for available flow control options or alternative models.
What maintenance procedures are required for consistent performance?
Regular maintenance includes cleaning solution bottles, inspecting tubing for chemical damage, monitoring motor performance, and replacing worn components according to usage intensity.
How does the system handle high-concentration acid vapors?
High-concentration vapors may require more frequent alkaline solution changes and higher base concentrations (up to 35%). Monitor solution temperature and pH to ensure adequate neutralization capacity.
What are the electrical requirements for international laboratory use?
The unit requires AC220V, 50Hz power supply with 120W consumption. For different electrical standards, consult technical specifications for available power configuration options.
Can multiple exhaust sources be connected to one ES1B unit?
The single 8-10mm air extraction interface is designed for one primary exhaust source. Multiple connections would require manifold arrangements and airflow calculations to ensure proper vapor capture.
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