Fume Hood

1. Kewaunee Labway India Pvt Ltd marketing@kewaunee.in https://www.kewaunee.in/ How To Select The Right Fume Hood For Your Laboratory? Researchers and scientists deal with harmful chemicals, hazardous materials, and poisonous gases daily. For any organisation and institution hostinglaboratories, the safety of the lab users and of the lab is the toppriority. Fume hoods are the common and reliable engineering control deployed for safe labs. But, selecting a fume hood can be a confusing task. Fume hoods come in various configuration and sizes complicating the choice. But, don’t you worry. In this guide, we’ll walk-you through the five important aspects you need to check for when selecting your next fume hood. Infographic - How to Select Fume Hood for Your Labs? First, let’s get somebasics in place. WHAT IS THE PURPOSE OF A FUME HOOD? Ventilation devices are used to capture and remove the contaminants (gas, vapour, or dust)away from the users and out of the laboratory. Fume hood (fume cupboard or fume closet) is a local ventilation devicefound in all laboratories. Fume hoods control contamination by drawing air through the face of the fume hood and away from the users and labs. Through ventilation fume hoods minimise the risk of contamination.

2. Kewaunee Labway India Pvt Ltd marketing@kewaunee.in https://www.kewaunee.in/ A scientist conducting experiments within the safe confines of a fume hood WHAT ARE FUME HOODSMADE OF? We know fume hoods work by drawing the air and contaminants out of the user zone. Modern fume hoods, like Kewaunee’s Supreme Air Venturi, comes with many controls and parts for enhanced safety. For now, we’ll focus on three important components–sash, baffles, and fume hood body. SASHis a moveable panel on front portion of the fume hoods – often referred to as the fumehood door or window. Sash provides a protective barrier between the lab user and the experiment. The common sash configurations are– vertical, horizontal, and combination sash (vertical + horizontal). BAFFLEis the slotted openings along the back of the hood. Baffles work in tandem with the sash to control the air flow in the fume hood and keep the airflow uniform. By eliminating the dead spots and reverse airflow (into the labs), baffles play an important role in safety and fume hood efficiency. In older fume hoods, baffles were moveable partitions, but modern fume hood like Supreme Air Venturi comes with fixed baffles. BODYcomprisesthe fume hood exterior and the interior.The fume hood body contains the contaminants. Well-designed exterior will have a contoured entry (aerodynamic design) to assist airflow into the hood and improve hood performance.Thematerial of construction (MOC)is an important consideration for fume hood, specifically the interior liner material. Since chemicals and gases can corrode the interiors and exterior, MOCs resistant to work being conducted in the fume hood is criticalwhen selecting your fume hood.

3. Kewaunee Labway India Pvt Ltd marketing@kewaunee.in https://www.kewaunee.in/ Sectional View of Supreme Air Venturi Fume Hood FIVE ESSENTIALS THINGS TO CONSIDER FOR FUME HOOD SELECTION With a basic understanding of fume hood, let’s now explore the essentials to consider whilst selecting a fume hood. Selection of the proper fume hood to use in a laboratory should factor in two interrelated considerations: Fume hood must allow the user to perform the work in a safe, efficient manner Fume hood must allow for efficiency to reduce the air conditioning cost. The five important aspects you need to check for when selecting your next fume hood are: 1. SAFETY Safety of the fumehood can leave you in a twist. There are many aspects affecting the safety– fume hood design, material of construction, sash positions, exhaust efficiency, user-friendly features, etc.Manyaccredited bodies (SEFA, ASHRAE, Underwriters Laboratories, National Fire Protection Association,etc.) are working hard to specify the safety and quality standards. Choosing fume hoods with the highest safety certification andcompliance is a smart way to go. 2. ECONOMICS According to a research, a lab consumes5 times the energy as an equivalent office space. As the environmental norms are tightening and organisations are becoming conscious of their energy consumption, fume hoods can play a significant part in reducing the energy bills and carbon footprint. Fume hood exhaust requirements affect the total cost of energy - the cost ofheating and cooling the air exhaustedby the hood.Choosing the proper hood designed for high efficiency at lower exhaust can helpreduce these costs. 3. SIZE Fume hood must be large enoughto accommodate the containers and apparatus within theprescribed safe work area of thehood (6" behind the plane of thesash).The configuration of the hoodshould allow containers movement in and out of the hoodwith ease.The sash opening of the hoodmust allow enough access forsafe manipulation of the containersand apparatus within the hood.

4. Kewaunee Labway India Pvt Ltd marketing@kewaunee.in https://www.kewaunee.in/ 4. NON-CORROSIVE The interior of the hood must resist the corrosive effects of chemicalfumes, vapors, and condensation particulates.Fume hood designs preventing contaminants collection and deposit on the interior surface should be high on your agenda for safety and higher ROI. The inner liner materials should be resistantto the chemical exposure and corrosion resistancein the fume chamber. 5. CONVENIENCE Modern fume hoods allow for convenience of users besidessafety. What may seem a minor aspect can affectthe lab environment. The important convenience factors to consider are– hood understructure for storage of the required chemicals, lighting within the hood, noise levels, easy-access control panels, auditory and visual alarms for safety, and user-friendly real-time status & displays. SUMMING UP Here are the important points: Fume hood is an important safety device in your laboratory The choice of the fumehood will depend on the application (use our product selector for a guided selection) Safety and energy efficiency must be high on the selection criteria for the fume hood. For more details about Kewaunee Labway India Pvt Ltd, please visit our website: https://www.kewaunee.in/