Ventilated Balance Enclosure (VBE)

The Ventilated Balance Enclosure (VBE) is designed specifically for stability and accuracy while maintaining a high level of operator protection during handling of hazardous airborne powders. With our aerodynamic sash design and arm rest plus a sectionalized baffle, the powders will be well-contained inside the enclosure and discharged through a HEPA filter or directly to the lab exhaust.

Key Features:

Negative pressure application provides a high level of operator protection from hazardous airborne particles.
The Isocide™ powder coated EG steel material of construction has antimicrobial properties (Optional: a full stainless steel construction).
Single BIBO H14 Filter and EC blower (Optional: Double BIBO HEPA filtration).
The disposal port is equipped with O-ring to provide a sealed trash bag, as an additional powder containment solution.
VBE is equipped with a filter, a portable filter and a blower module for better airflow control.
Sentinel™ microprocessor controller with visual display and alarms for airflow monitoring.

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Features

Optimized Airflow

This unit is equipped with an aerodynamic sash handle and arm rest to provide optimized airflow inside the enclosure.

Air enters the VBE unit through the lower part of the work zone and the sash (via sash sweep to allow sweeping of airborne powders away from the sash).
This air is then pulled by the blowers and passed through HEPA filters (Bag-In, Bag-Out) before being exhausted out of the unit.

Sentinel Microprocessor Controller

Provides control, visual monitoring, and alarm system.

Modular Design

The design of VBE is modular in terms of exhaust and filtration system allowing for flexibility and full customization.

Two Types of Filtration Systems

Single Filtration: with only one HEPA (H14, >99.995% efficiency at 0.3 µm) filter in Bag-In, Bag-Out configuration.
Double Filtration: with two HEPA (H14, >99.995% efficiency at 0.3 µm) filters in a series in Bag-In, Bag-Out configuration.

Media: Glass Fiber
Sealing Method: Gasket

An additional carbon filter may be supplied for removal of volatile compounds or odor control.

Three Exhaust Options

Ducted (Standard): recommended for handling volatile potent powders.
Ductless: applicable for operations not associated with handling volatile materials.
Portable Duct: recommended for facilities without a high ceiling clearance.

Wide array of VBE enclosure modules or configurations

Covers various operations involving powder weighing and dispensing.

Standard (A): Perfect for small spaces, this solution helps end-users maximize ceiling space by incorporating portable filter options.
Tall (B): Medium-sized models are ideal for handling tall equipment during powder weighing.
Tall and Deep (C): Large models are ideal for large-scale powder handling and can be configured with a Worktop featuring a Drum Access option.

Constructed with Quality Materials

Electro-galvanized steel with white oven-baked epoxy polyester powder coating.

The Isocide™ powder coating has antimicrobial properties.
Options for a full stainless steel construction is also possible.

Principle

Ventilated Balance Enclosure is designed to safely and efficiently handle potent/toxic powders by continuously pulling air toward the cabinet’s work zone. This configuration ensures a negative pressured environment is always, thus preventing any unintended exposure to operators and the surrounding environment.

Air enters the VBE unit through the open sash, via the lower/ middle part of the work zone and through the actual opening on the sash (via sash sweep to allow sweeping of airborne particles away from the sash).
This air is then pulled through the back wall of the unit by the blowers and passed through HEPA filters (Bag-In, Bag-Out) before being exhausted out of the unit.

The unit is factory-tested as per the following:

Airflow Velocity Check
- Confirms that the air velocity in the chamber is within the specifications and able to prevent cross-contamination in the facility.
Filter PAO Leak Test
- To detect system leaks and ensure containment effectiveness for potent pharmaceutical powders.
Noise Level Test
Light Intensity Test
Airflow Visualization Check
- Demonstrates the airflow pattern inside the VBE unit.
Vibration Test*

*Optional for field testing

Models

Guide to Ventilated Balance Enclosure (VBE) Models
VBE-2 A 8-03 S A
Model	Internal Width (mm)	Size	Configuration	Electrical Code	Enclosure Module	Filter Module	Exhaust Type
VBE	610	2	A - Standard B - Tall C - Tall and Deep	7 - 100V 50/60Hz	01 - without filter and blower 02 - with filter 03 - with filter and blower	S - Single Filtration D - Double Filtration	A - Ducted B - Ductless C - Portable Duct
	915	3		8 - 230V 50/60Hz
	1220	4		9 - 115V 50/60Hz
	1525	5
	1830	6
	2135	7
	2440	8


Series	CONFIG	SIZE	WORK SPACE			EXTERNAL			TOP LAYOUT					BASE SIZE
Series	CONFIG	SIZE	A	B	C	D	E	F	G	H	I	J	K	L	M
01 Series	A	2	610	650	555	665*	835	760	330	-	4"	110	1	660	700
		3	915	650	555	970*	835	760	483	-	4"	110	1	965	700
		4	1220	650	555	1275*	835	760	330	610	4"	110	2	1270	700
		5	1525	650	555	1580*	835	760	407	763	4"	110	2	1575	700
		6	1830	650	555	1885*	835	760	483	915	4"	110	2	1880	700
		7	2135	650	555	2190*	835	760	559	1068	4"	110	2	2185	700
		8	2440	650	555	2495*	835	760	432	814	4"	110	3	2490	700
	B (TALL)	2	610	955	555	665*	1140	760	330	-	4"	110	1	660	700
		3	915	955	555	970*	1140	760	483	-	4"	110	1	965	700
		4	1220	955	555	1275*	1140	760	330	610	4"	110	2	1270	700
		5	1525	955	555	1580*	1140	760	407	763	4"	110	2	1575	700
		6	1830	955	555	1885*	1140	760	483	915	4"	110	2	1880	700
		7	2135	955	555	2190*	1140	760	559	1068	4"	110	2	2185	700
		8	2440	955	555	2495*	1140	760	432	814	4"	110	3	2490	700
	C (TALL & DEEP)	2	610	955	705	665*	1140	910	330	-	4"	110	1	660	850
		3	915	955	705	970*	1140	910	483	-	4"	110	1	965	850
		4	1220	955	705	1275*	1140	910	330	610	4"	110	2	1270	850
		5	1525	955	705	1580*	1140	910	407	763	4"	110	2	1575	850
		6	1830	955	705	1885*	1140	910	483	915	4"	110	2	1880	850
		7	2135	955	705	2190*	1140	910	559	1068	4"	110	2	2185	850
		8	2440	955	705	2495*	1140	910	432	814	4"	110	3	2490	850
02 Series *External Height Reference for Ductless “02 series”: - Single Filtration: + 385mm* - Double Filtration: + 670mm - With ducting: + 125mm	A	2	610	650	555	665*	1160	760	330	-	10"	238	1	660	700
		3	915	650	555	970*	1160	760	483	-	10"	238	1	965	700
		4	1220	650	555	1275*	1160	760	330	610	10"	238	2	1270	700
		5	1525	650	555	1580*	1160	760	407	763	10"	238	2	1575	700
		6	1830	650	555	1885*	1160	760	483	915	10"	238	2	1880	700
		7	2135	650	555	2190*	1160	760	559	1068	10"	238	2	2185	700
		8	2440	650	555	2495*	1160	760	432	814	10"	238	3	2490	700
	B (TALL)	2	610	955	555	665*	1465	760	330	-	10"	238	1	660	700
		3	915	955	555	970*	1465	760	483	-	10"	238	1	965	700
		4	1220	955	555	1275*	1465	760	330	610	10"	238	2	1270	700
		5	1525	955	555	1580*	1465	760	407	763	10"	238	2	1575	700
		6	1830	955	555	1885*	1465	760	483	915	10"	238	2	1880	700
		7	2135	955	555	2190*	1465	760	559	1068	10"	238	2	2185	700
		8	2440	955	555	2495*	1465	760	432	814	10"	238	3	2490	700
	C (TALL & DEEP)	2	610	955	705	665*	1465	910	330	-	10"	238	1	660	850
		3	915	955	705	970*	1465	910	483	-	10"	238	1	965	850
		4	1220	955	705	1275*	1465	910	330	610	10"	238	2	1270	850
		5	1525	955	705	1580*	1465	910	407	763	10"	238	2	1575	850
		6	1830	955	705	1885*	1465	910	483	915	10"	238	2	1880	850
		7	2135	955	705	2190*	1465	910	559	1068	10"	238	2	2185	850
		8	2440	955	705	2495*	1465	910	432	814	10"	238	3	2490	850
03 Series *External Height Reference for Ductless “03 series”: - Single Filtration: + 550mm* - Double Filtration: + 835mm - With ducting: + 125mm	A	2	610	650	555	665*	1325	760	330	-	10"	238	1	660	700
		3	915	650	555	970*	1325	760	483	-	10"	238	1	965	700
		4	1220	650	555	1275*	1325	760	330	610	10"	238	2	1270	700
		5	1525	650	555	1580*	1325	760	407	763	10"	238	2	1575	700
		6	1830	650	555	1885*	1325	760	483	915	10"	238	2	1880	700
		7	2135	650	555	2190*	1325	760	559	1068	10"	238	2	2185	700
		8	2440	650	555	2495*	1325	760	432	814	10"	238	3	2490	700
	B (TALL)	2	610	955	555	665*	1630	760	330	-	10"	238	1	660	700
		3	915	955	555	970*	1630	760	483	-	10"	238	1	965	700
		4	1220	955	555	1275*	1630	760	330	610	10"	238	2	1270	700
		5	1525	955	555	1580*	1630	760	407	763	10"	238	2	1575	700
		6	1830	955	555	1885*	1630	760	483	915	10"	238	2	1880	700
		7	2135	955	555	2190*	1630	760	559	1068	10"	238	2	2185	700
		8	2440	955	555	2495*	1630	760	432	814	10"	238	3	2490	700
	C (TALL & DEEP)	2	610	955	705	665*	1630	910	330	-	10"	238	1	660	850
		3	915	955	705	970*	1630	910	483	-	10"	238	1	965	850
		4	1220	955	705	1275*	1630	910	330	610	10"	238	2	1270	850
		5	1525	955	705	1580*	1630	910	407	763	10"	238	2	1575	850
		6	1830	955	705	1885*	1630	910	483	915	10"	238	2	1880	850
		7	2135	955	705	2190*	1630	910	559	1068	10"	238	2	2185	850
		8	2440	955	705	2495*	1630	910	432	814	10"	238	3	2490	850
* = with Disposal Port, additional +115mm Note: - SS 316L worktop: refer to External Width “L” - Granite/Epoxy worktop: refer to External Width “D”

Accessories

Optional Control System Package/s:

Add-on RH/Temperature Sensor with LCD

Worktop option:

Solid Epoxy (additional 91 mm in external height)
- Suitable for handling laboratory chemicals/reagents.
SS 316 (additional 50 mm in external height)
Granite (additional 91 mm in external height)
- Ideal for high accuracy weighing operations, as granite minimizes vibration.

VBE base options:

Support stand
Cabinet type base
Support stand with drum access

In addition to this, Castor wheel or Leveling feet can be selected as footing options.

Additional Carbon filter:

Carbon type: Organic, Acid, Mercury, Sulphur, Halogen, Aldehyde, Ammonia/Amine, Chloroform/Ethers.
Size:
- 2V (dimension: 420 mm x 457 mm x 65 mm; for VBE with 2 ft, 4 ft, 5 ft, and 8 ft internal widths)
- 3V (dimension: 420 mm x 762 mm x 65 mm; for VBE with 3 ft, 6 ft, and 7 ft internal widths)

Granite Slab:

For VBE units without a granite top, this slab can be added to guarantee high accuracy of weighing readings. The client’s preferred weighing balance can be set up on top of this slab to remove traces of vibration.
Please provide the dimensions (WxDxH) of the weighing balance upon ordering.

FAQs

Are disposal ports standard by default?

Disposal ports are included as a default configuration with pre-installed covers.
Is the trash bag or disposal bag included for the disposal port?

The trash bag or disposal bag is not included for the disposal port as a standard.

What are the differences between Ventilated Balance Enclosure (VBE) vs Ascent Fumehood (ADC-E) and Powdermax (PW1)?

	Powdermax (PW1)	Ascent Fume Hood (ADC-E)	Ventilated Balance Enclosure (VBE)
Application	Ideal for powder weighing / handling granules or particles	Ideal for handling solvents/solutions and chemicals in powdered form/particles/ - Usually recommended in cleanroom applications	Ideal for powder weighing (can reach large scale) for non-sterile hazardous drug preparation. - Provides containment
Classification	Powder weighing balance enclosure	Fume Hood	Containment ventilated enclosure
Exhaust Mode	Ductless only	Ductless	Ducted (standard) or ductless
Filter Module	HEPA only (N/S for carbon filter)	Main filter: Carbon Exhaust filter: HEPA	Single or dual HEPA filtration with option for carbon filter
Airflow Velocity	0.5 m/s	0.4 m/s	0.3 m/s
BIBO	No	No	Yes