Ventilated Enclosures

These units are ideal for containment of powders and fumes during compounding or weighing. We offer features that are very important in terms of safety that are not found with any other competitive products.

Introduction

Weigh Stations are the best method of rendering fumes & particulates harmless, creating a safer working environment and preventing harmful emissions being exhausted into the atmosphere. Utilizing the most advanced carbon and HEPA filtration, Air Science, USA weighing stations offer flexibility of design, according to your requirements.

Ductless technology is environmentally friendly and uses carbon filtration and/or HEPA filtration to remove unwanted powders or fumes making them ideal for a range of weighing applications.

Precision Containment

What is Precision Containment? Well it's the understanding that the containment needs associated with each application can vary so greatly that task specific (or application based) workstations are necessary to adequately protect operators.

Our research has found that even subtle modifications from one enclosure to another can result in containment factors from microgram down to nanogram range and that no single fume hood can handle all applications.

Vented Enclosures (VE)

Our turbulent free design provides a Airflow Pattern smooth transition of airflow into the enclosure. The air is then pulled across the work surface in a horizontal and uniform airflow pattern and drawn into the rear slotted plenum. This design reduces the 'rolling' affect found in conventional fume hoods and keeps balances stable even when weighing in the microgram accuracy.

The hose that attaches to this plenum can either be connected to our fume extractor or directly to your in-house exhaust ventilation system.

Each unit is provided with an 8 ft PVC heavy walled flex hose that contains a steel wire helix. The smooth inner surface insures minimal pressure drop and friction loss.

Fume Extractor (FE)

The vented enclosure can be attached to our fume extractor and is totally separate to prevent vibrations. The fume extractor can be located up to 8 feet away. The unit is light weight and its compact size allows for easy positioning either on or below your The remote control allows work surface.

Filter Selection

An extended life HEPA filter is available with a bag-out system that totally protects personnel during change out. In addition, 14 types of carbon filters are available for your specific filtration needs. Both HEPA and carbon filters can be installed 'in-line' for almost limitless combinations to suit your requirements.

Performance and Validation

INDEPENDENT TESTING BY SAFEBRIDGE CONSULTANTS* HAS SHOWN INCREDIBLE RESULTS!

SAFEBRIDGE CONSULTANTS* was requested to conduct performance verification and assess our ability to contain and control airborne concentrations of particulate powder generated during bench-scale operations.

A 'challenge' concentration of Naproxin Sodium (an active non-toxic pharmaceutical ingredient, or 'API'),was used to act as the surrogate powder to identify the 'range' of potential exposures and respective containment during powder handling operations.

Three different operators were used in an attempt to estimate the likely range of exposure variability among persons of differing skills and/or experience levels. The operations consisted of distinct, small-scale manipulations of the API. An air sampling strategy was developed to measure airborne concentrations of surrogate at the operator and at representative locations inside the Air Sciences testing room during six consecutive rounds of weighing/dispensing operations. Operator exposure measurements were collected at the collar of each of the operators (e.g., in the personal breathing zone) during respective rounds of the weighing/dispensing activity. Contemporaneously, proximate area air samples were collected at fixed locations around the VE. For more information, a copy of this report is available upon request.

*Note: The SAFEBRIDGE CONSULTANTST™ name is used for informational purposed only. Endorsement of their testing services by Air Science USA LLC or their endorsement of Air Science is neither given nor implied.

Typical Applications

Short duration tasks/task specific workstations;Bulk powder weighing and transfer; Enclosing balances, microscopes, androbotic equipment ; Compounding