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3930000
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Summary of Contents for Labconco Protector 3930000

  • Page 1  Protector Work Stations Models 3930000 3930001 3930020 3930021...
  • Page 2 Labconco Corporation is held harmless with respect to user’s compliance with such regulations.
  • Page 3 ORIGINAL INSTRUCTIONS ABLE ONTENTS CHAPTER 1: INTRODUCTION Typographical Conventions CHAPTER 2: PREREQUISITES Support, Vibration & Movement Requirements Location and Air Current Requirements Exhaust and Blower Requirements Electrical Requirements Space Requirements CHAPTER 3: GETTING STARTED Unpacking Your Enclosure Installing the Enclosure on a Supporting Structure & Work Surface Connecting to the Exhaust System Installation of Carbon Filters for Room Exhaust...
  • Page 4 CHAPTER 6: MAINTAINING YOUR ENCLOSURE Routine Maintenance Schedule Setting the Inflow Face Velocity with the Speed Control Adjustment Guardian 500 Airflow Monitor Kit No. 3944700 or 3944701 Guardian 500 Component Identification Guardian 500 Installation Procedure Guardian 500 Calibration Procedure Guardian 500 Alarm Activation Guardian Digital Kit No.
  • Page 5 Your enclosure provides personnel protection through superior containment while conserving energy at OSHA approved velocities as low as 60 feet per minute. It is the result of Labconco’s more than 50 years of experience in manufacturing fume hoods and more than 30 years of experience in manufacturing filtered enclosures.
  • Page 6 Filter for and ducting to the outside is particulates not feasible * It is recommended that a Labconco product specialist review the chemical application to determine if it is suitable. Consult Chapter 5 and Chapter 6. Protector Work Station 3930001 is shown on Work...
  • Page 7 Chapter 1: Introduction Typographical Conventions Recognizing the following typographical conventions will help you understand and use this manual:  Steps required to perform a task are presented in a numbered format.  Comments located in the margins provide suggestions, reminders, and references.
  • Page 8 Chapter 2: Prerequisites Before you install the enclosure, you need to prepare your site for installation. You must be certain that the area is level and of solid construction. In addition, a dedicated source of electrical power should be located near the installation site to power the enclosure, and other apparatus.
  • Page 9 Chapter 2: Prerequisites Support, Vibration and Movement Requirements At a minimum, the supporting structure usually consists of a base cabinet or base stand and chemical-resistant work surface. See Chapter 3 for setting up installation. Location and Air Current Requirements The Protector Work Stations have been designed to contain hazards by negating typical cross drafts and turbulence within the opening.
  • Page 10 The enclosure must be connected to either a dedicated blower or a house exhaust system. Labconco offers accessory remote blowers and transition adapters listed in Chapter 7. Labconco also offers accessory FilterMate Portable Exhausters listed in Chapter 7. Contact Labconco for blower sizing assistance.
  • Page 11 Chapter 3: Getting Started Now that the site for your Protector Work Station is properly prepared, you are ready to unpack, inspect, install, and validate your system. Read this chapter to learn how to:  Unpack and move the enclosure. ...
  • Page 12 The front of the enclosure should be aligned within 0.3" of the front of the work surface. Mounting holes are provided in the Labconco accessory work surfaces to secure the enclosure.
  • Page 13 6. Tighten the four screws to complete the installation. If the accessory histology/pathology work surface with sink is to be installed (Labconco #6942003) then use general plumbing to connect the hot and cold water supply lines and sink drain line. The valves are supplied with 1/2"...
  • Page 14 Chapter 3: Getting Started 3912401 (6") Exhaust Transition shown for 3930001 Protector Connection to Remote Blower Work Station, 115V Remote Blower 3944700 Guardian 500 Airflow Monitor (115V) Control Panel 3908402 Dished Work Surface 3746702 Telescoping Base Stand 3930000 Protector Work Station, Typical Exhaust Holes 115V w/ Integral Blower Exhausts through Carbon Filters...
  • Page 15 Chapter 7 for ordering blower exhaust equipment. For your convenience several exhaust options are shown in Figures 3-2 and 3-3. Consult Labconco Customer Service should you require help sizing your blower for the exhaust volume and system static pressure loss.
  • Page 16 Chapter 3: Getting Started 3912400 5" ID Top Exhaust Adapter 5" ID Hose included with included with FilterMate 3930001 Protector Work FilterMate Station for Remote Exhaust (115V) Optional 3944700 Guardian 500 Airflow Monitor (115V) Accessory 3908402 Dished Work Surface Optional FilterMate Portable Exhauster Accessory 4' Base Cabinet...
  • Page 17 Chapter 3: Getting Started 3930001 Protector Work Station for Remote Exhaust (115V) Optional Accessory Airflow Monitor 3913100 Exhaust Cover Plate moved to Top 3912403 6" Lower Exhaust Transition Adaptor (Accessory) Figure 3-3 Back View of Protector Work Station with Lower 6" Remote Exhaust Product Service 1-800-522-7658...
  • Page 18 Chapter 7. All carbon filters are simply installed with the gasket side on the downstream exhaust side. Install the correct carbon filter for the application and call Labconco for assistance. Two carbon filters must be installed behind the perforated baffle.
  • Page 19 Chapter 3: Getting Started Connecting the Electrical Supply Source to the Enclosure 115V Models Simply connect the 115V power cord supplied to the IEC electrical supply plug on the back of the enclosure, then connect the integral blower power cord from the motorized impeller outlet on the exhaust to the back of the upper light control panel.
  • Page 20 Chapter 3: Getting Started Main Inlet Power Back of Airflow Monitor Switched Power Outlet to Blower Motor (Regulated by Speed Control) Speed Control Circuit Breaker Auxiliary Switched Power Outlet for Airflow Monitor Blower Motor Power Cord Connection Integral Blower Motorized Impeller Power Inlet Exhausts to the Room...
  • Page 21 Chapter 3: Getting Started Main Inlet Power Switched Power Outlet to Remote Blower Motor using Modified Power Cord Not Shown – Auxiliary Switched Outlet for Airflow Monitor For 6" Connection to Circuit Remote Blower Breaker Figure 3-5 Protector Work Station for Remote Exhaust Product Service 1-800-522-7658...
  • Page 22 Chapter 3: Getting Started 230V Models The same procedure applies for the 230V except it is shipped without a plug. Install the appropriate plug for your electrical specifications per local codes. Do not use any detachable power cord that is not adequately rated for the unit.
  • Page 23 ASHRAE 110-1995. (See Appendix E) All enclosures achieve an “as manufactured rating” of less than 0.05 part per million (ppm) at 4 liters per minute (lpm); AM <0.05 (Consult Labconco for individual ratings). For “field use” ASHRAE testing contact Labconco for a certified on-site contractor.
  • Page 24 What makes the enclosures so unique is the revolutionary way they direct air into and through the contaminated air chamber. Labconco engineered the enclosures to minimize the effects of turbulence. The containment-...
  • Page 25 Chapter 4: High Performance Features & Safety Precautions 20 Not Shown 16 Not Shown Figure 4-1 Protector Work Station for use with Remote Blower Product Service 1-800-522-7658...
  • Page 26 Chapter 4: High Performance Features & Safety Precautions 17 w/ Sink 20 Not Shown 16 Not Shown Figure 4-2 Protector Work Station with Integral Blower Product Service 1-800-522-7658...
  • Page 27 Chapter 4: High Performance Features & Safety Precautions 1. Aerodynamic Clean-Sweep™ Air Foil has a unique shape that allows air to sweep the work surface for maximum containment. The Clean-Sweep™ openings create a constant protective barrier from contaminants. Should the operator inadvertently block the airflow entering the air foil, air continues to pass under the air foil and through the Clean-Sweep openings.
  • Page 28 Chapter 4: High Performance Features & Safety Precautions 3. Upper Dilution Air Supply provides bypass air from above the work area. This feature constantly bathes the inside of the sash with clean air and reduces chemical concentrations along the sash plane, near the critical breathing zone.
  • Page 29 Chapter 4: High Performance Features & Safety Precautions 11. Built-In Motorized Impeller (Integral Blower Models Only) eliminates the need for a remote blower when using low level concentrations of chemicals. The impeller wheel is dynamically balanced. See Figure 4-2. 12. Speed Control (Integral Blower Models Only) regulates the speed of the motorized impeller and is used by the certifier to validate and adjust the inflow velocity.
  • Page 30 Chapter 4: High Performance Features & Safety Precautions Safety Precautions 1. Although the enclosure has been engineered to maintain optimum operator safety, caution should always be used while working. Prior to using the enclosure, check to make sure that the exhaust blower is operating and that air is entering the enclosure at its specified face velocity.
  • Page 31 Contact Labconco for help with chemical assessment. 24. Use the smallest possible quantity of chemical(s) within the enclosure and never exceed the amount that can be effectively adsorbed by the carbon filters before breakthrough.
  • Page 32 29. If the blower fails during use, processes should cease and the area should be vacated and ventilated. 30. Always refer to the NIOSH Pocket Guide to Chemical Hazards before proceeding (See Appendix E). For additional help with filter and chemical selection contact Labconco at 1-800-821-5525 or 1-816-333-8811. Product Service 1-800-522-7658...
  • Page 33 Chapter 5: Appropriate Applications for Your Enclosure Now that the installation of your enclosure is completed, you are ready to use your Protector Work Station. Read this chapter to learn about: 1. Routine Daily Work Procedures. 2. Suitable Applications. 3. Carbon Filter Applications. 4.
  • Page 34 Chapter 5: Appropriate Applications for Your Enclosure Loading Materials and Equipment  Load only the materials required for the procedure. Do not overload the enclosure.  Do not obstruct the air foil, or rear baffle slots.  Large objects should not be placed close together and should be elevated above the work surface to permit airflow to sweep under the equipment.
  • Page 35 The period of time until the odor threshold is reached in the exhaust stream can be estimated from Labconco’s exclusive chemical assessment program. Contact Labconco on carbon filter life for specific applications. See Chapter 6. Product Service 1-800-522-7658...
  • Page 36 (Note that the capacity of activated carbon is not a constant, but varies with the inlet concentration). Labconco Product Specialists can determine the estimated saturation time for a particular chemical.
  • Page 37 The inlet concentration or the evaporation rate of the chemical must never exceed the TWA for the chemical. Consult a Labconco Technical Specialist for estimated saturation life. See Chapter 6 for an example of estimating saturation life. Another source is the Labconco chemical guide for carbon filtered enclosures.
  • Page 38 Where applications require the use of acids a vented fume hood, or vented enclosure should be used with a remote blower and ducted to the outside. Consult Labconco for other small enclosures suitable for acid work. No exceptions are permitted, as the Protector Work Station with Integral Blower impeller life span will be limited with acid use.
  • Page 39 Chapter 6 Maintaining Your Enclosure Monitoring airflow and changing the carbon filters (if equipped) is the primary maintenance required. Review this chapter on maintenance for the following: 1. Routine Maintenance. 2. Speed control adjustment and setting the inflow face velocity. 3.
  • Page 40 Chapter 6: Maintaining Your Enclosure Monthly (or more often as required)  Determine the actual face velocity through the sash opening of the enclosure where the average reading should be at the specified velocity. (Use calibrated thermal anemometer or other approved apparatus).
  • Page 41 Chapter 6: Maintaining Your Enclosure Exhausts to the Room Speed Control Adjusted Slowly with Small Phillips Screwdriver (CCW to Increase or CW to Decrease) Figure 6-1 Speed Control Used on Integral Blower Protector Work Station Guardian™ 500 Airflow Monitor Kit No. 3944700 or 3944701 The Guardian 500 Airflow Monitor is designed to continuously monitor airflow through enclosures and fume hoods.
  • Page 42 Chapter 6: Maintaining Your Enclosure Guardian 500 Component Identification See Figure 6-2 below. Air Inlet A portion of the air coming into the enclosure passes through the air inlet and across the flow sensors. Normal Flow Indicator This green light indicates normal flow conditions. Alarm Indicator This red light is activated approximately 10-30 seconds after the low flow set point is reached.
  • Page 43 Chapter 6: Maintaining Your Enclosure Guardian 500 Installation Procedure 1. The enclosure comes prepared to except the Guardian™ 500 Airflow Monitor. 2. First remove the large 1.19" dia. gray hole plug. See Figure 6-3. See Figure 6-4 only to reference internal assembly of the airflow monitor. Locate the elbow, locknut, and washer and install it in the 1.19"...
  • Page 44 Chapter 6: Maintaining Your Enclosure Remove Large 1.19" Dia. Hole Plug Install Elbow, Locknut and Washer Figure 6-3 Hole Plug and Mounting Screws Location Product Service 1-800-522-7658...
  • Page 45 Chapter 6: Maintaining Your Enclosure Display Guardian 500 Monitor Figure 6-4 Guardian 500 Details Guardian 500 Calibration Procedure Each alarm module and enclosure/fume hood is unique and needs to be individually calibrated in the field. The procedure for the adjustment is as follows: 1.
  • Page 46 Chapter 6: Maintaining Your Enclosure 6. If the red light alarm is on, slowly turn the adjustment screw counterclockwise until the green light is activated. If the green light is on, slowly turn the adjustment screw clockwise until the red light comes on. Slowly turn the adjustment screw back until the red light is activated.
  • Page 47 Chapter 6: Maintaining Your Enclosure Accessory Light Enclosure Hose Cover Monitor Figure 6-5 Guardian 500 Installation Product Service 1-800-522-7658...
  • Page 48 For complete detailed information, please refer to the separate Labconco 1000 Alarm User’s Manual provided with the enclosure. Guardian Digital 1000 Installation Procedure 1. The enclosure comes prepared to accept the Guardian Digital airflow monitor system.
  • Page 49 Chapter 6: Maintaining Your Enclosure Remove Large 1.19" Dia. Hole Plug Install Elbow, Locknut and Washer Figure 6-6 Hole Plug and Mounting Screws Location Airflow Sensor Display Digital 1000 Monitor Figure 6-7 Digital 1000 Airflow Monitor Details Product Service 1-800-522-7658...
  • Page 50 Chapter 6: Maintaining Your Enclosure Accessory Light Enclosure Hose Cover Monitor Figure 6-8 Digital 1000 Airflow Monitor Installation Product Service 1-800-522-7658...
  • Page 51 WARNING” air reset to 3 fpm. This sets the alarm condition. 5. To complete the CAL CONFIGURATION, be sure to enter “DONE”. 6. To start the calibration mode, use the Labconco 1000 Manual and enter “CALIBRATION” mode on the display from the SETUP menu.
  • Page 52 60 – 70 80 fpm 83 - 93 80 - 90 100 fpm Because of airflow fluctuations in a typical laboratory environment Labconco suggests setting the “RED LED” low alarm set point to 20% below the enclosure’s operating speed. Product Service 1-800-522-7658...
  • Page 53 Chapter 6: Maintaining Your Enclosure 5. To complete the CAL CONFIGURATION, be sure to enter “DONE”. If needed, refer to the Configuration procedure provided on the following page for additional details. 6. To start the calibration mode, enter “CALIBRATION” mode on the display from the SETUP menu.
  • Page 54 Chapter 6: Maintaining Your Enclosure Note: Enter Button stores information and +/- Buttons allow for scrolling. 1. Push the “ENTER” Button on the face of the alarm until the “SET UP” Menu is displayed. 2. Scroll to “SET UP” and hit “ENTER”. 3.
  • Page 55 Chapter 6: Maintaining Your Enclosure Guardian 1000 Digital Alarm (Digital Display, LED’s, Keypads) Airflow Sensor Switched Auxiliary Power Outlet for Airflow Monitor Back of Guardian 1000 Power Supply Digital Alarm Module Route Sensor Cable here from alarm Module to Airflow Sensor Airflow Sensor Airflow Sensor Spacer...
  • Page 56 A kit including syringe pump and flexible tubing can be purchased as an accessory from Labconco (Catalog # 6924900). Labconco Customer Service Representatives are supplied with detector tube catalog numbers, as well as telephone numbers to direct you to where to purchase these items.
  • Page 57 “Time” can be used to anticipate saturation or TWA levels based on prior experience. However, this does not replace the need for sampling. Consult Labconco technical specialist for an estimate of carbon filter life based on chemical usage. Detector tubes, or analytical instrumentation should always be used to determine concentrations in the carbon filter.
  • Page 58 Chapter 6: Maintaining Your Enclosure First Carbon Filter Knob for Releasing Carbon Filters First Carbon Filter Gasket Handle to Lower Motorized Impeller located here after both carbon filters Perforated Baffle Second Carbon Filter Perforated Baffle Pivot Figure 6-10 Carbon Filter Replacement Product Service 1-800-522-7658...
  • Page 59 Chapter 6: Maintaining Your Enclosure Calculating Carbon Filter Life Labconco developed a modeling program to estimate the filter life for typical carbon filters. Since filter life is dependent on the chemical used, the airflow, filter size, and the dwell time, refer to the Chemical Guide for the Paramount®...
  • Page 60 Chapter 6: Maintaining Your Enclosure Formaldehyde only For formaldehyde, use 10% of the impregnated carbon weight. Formalin is 37% formaldehyde by weight. The density of formalin is 1.08 g/ml. These values are for one filter. If using two filters, then double the adsorption volume.
  • Page 61 Chapter 6: Maintaining Your Enclosure Motorized Impeller Replacement The motorized impeller must be replaced as a complete unit. When the motorized impeller is replaced, the capacitor may also be replaced. See Appendix A for Replacement Parts Diagram. See Figure 6-11 for an isometric view of the motorized impeller.
  • Page 62 Chapter 6: Maintaining Your Enclosure Motorized Impeller and Motor Bracket located behind Plenum Pan Motorized Impeller Inlet Machine Screws to support Plenum Plenum Pan Figure 6-11 Motorized Impeller Replacement Speed Control Replacement 1. Follow the procedure to replace the fluorescent light to access the speed control.
  • Page 63 Chapter 7: Accessorizing and Modifying Your Enclosure There are several ways to accessorize the enclosure for your individual requirements. These include the addition of accessory work surfaces, airflow monitors, exhaust transition adapters, remote blowers, exhaust dampers, FilterMate Portable Exhausters, carbon filters, storage cabinets, stands and utility shelf kit.
  • Page 64 Chapter 7: Accessorizing & Modifying Your Enclosure 6942003 Work Surface with Sink Fabricated from durable epoxy resins, this unique work surface is designed to accept standard dissecting boards and is dished to contain spills. It resists corrosion and will not stain or absorb liquids. Easy to clean, the work surface comes with a 10"...
  • Page 65 Chapter 7: Accessorizing & Modifying Your Enclosure 2. Guardian™ 1000 Digital Airflow Monitor or Guardian™ 500 Airflow Monitor The Guardian 1000 Digital Airflow Monitor or Guardian 500 Airflow Monitor allows you to continuously monitor airflow through the enclosure. The rear exhaust plenum and upper light is factory prepared to mount either monitor.
  • Page 66 6. FilterMate Portable Exhausters and Filters (For use with Remote Protector Work Station Only) For filtered exhaust, Labconco offers FilterMate Portable Exhausters capable of exhausting up to 280 cfm of HEPA or carbon filtered air or up to 220 cfm of combination HEPA/Carbon or Dual Carbon filtered air when connected to the enclosure.
  • Page 67 Chapter 7: Accessorizing & Modifying Your Enclosure HEPA Filter Bag-In/Bag-Out Bag (For FilterMate Only) Part #3776002 helps contain hazardous particulate matter during filter changing operations. Carbon Filter (for FilterMate Only) Provides granular activated carbon or impregnated carbon. Filter Classification Part # x Pounds Organic 3923400...
  • Page 68 Chapter 7: Accessorizing & Modifying Your Enclosure 8. Storage Cabinets and Stands SOLVENT ACID Size/Description Dual Doors Right Hinge Left Hinge Dual Doors Right Hinge Left Hinge 48" 9902000 9901000 36" 9902100 9901100 30" 9902200 9901200 24" 9902300 9902400 9901300 9901500 18"...
  • Page 69 Chapter 7: Accessorizing & Modifying Your Enclosure 10. Hoses, Hose Clamps, and Hose Kits Provides alternatives for ducting. Catalog # Description 4868600 8 Feet of 5" ID gray flexible polypropylene hose (included with FilterMate). General purpose chemical resistant hose suitable in pharmaceutical applications.
  • Page 70 Chapter 8: Troubleshooting Refer to the following table if your Protector Work Station fails to operate properly. If the suggested corrective actions do not solve your problem, contact Labconco for additional assistance. PROBLEM CAUSE CORRECTIVE ACTION See “Certifying the Enclosure” Chapter 3...
  • Page 71 Chapter 8: Troubleshooting PROBLEM CAUSE CORRECTIVE ACTION Low face velocity Enclosure sash not Close sash to the lowest position. or poor closed. containment of contaminants. HEPA filter clogged Replace HEPA filter or increase speed. on FilterMate. Carbon filter loaded Replace carbon filter. with chemicals.
  • Page 72 Chapter 8: Troubleshooting PROBLEM CAUSE CORRECTIVE ACTION Airflow Monitor Continuous alarm. Check the face velocity of the Malfunction enclosure as the airflow of the system (Continued) may have changed. If incorrect, adjust the speed control to increase face velocity. The HEPA filter on the accessory FilterMate may have become loaded.
  • Page 73 Appendix A: Enclosure Components and Replacement Parts The components that are available for your Protector Work Station are listed. The parts shown are the most commonly requested. If other parts are required, please contact Product Service. Product Service 1-800-522-7658...
  • Page 74 Appendix A: Enclosure Components & Replacement Parts Item Qty. Part Number Description 3906500 Glass, Side 3906102 Glass, Sash 4' 3905202 Sash Assembly, 4' 3905602 Lower Air Foil, 4' 3929800 Bracket, Air Foil R.H. 3929801 Bracket, Air Foil L.H. 3907500 Stop, Sash R.H. 3907501 Stop, Sash L.H.
  • Page 75 Appendix A: Enclosure Components & Replacement Parts Item Qty. Part Number Description 1306000 Integral Blower Power Cord, IEC 1595619 Hole Plug, 0.50 Dia. 1595621 Hole Plug, 1.187 Dia. 1879400 Knob, Perforated Baffle Integral Blower 3931500 Perforated Baffle Assy, Integral Blower 3931600 Baffle Support 3938400...
  • Page 76 Appendix A: Enclosure Components & Replacement Parts 31, Internal 30, Internal Guardian 1000 Digital Monitor 13, Not Shown 27, Not Shown Guardian 1000 Digital 19, Internal Monitor 14, Internal 17, 18, Internal Guardian Digital Sensor 30, Internal Figure A-1 Protector Work Station with Integral Blower Product Service 1-800-522-7658...
  • Page 77 Appendix A: Enclosure Components & Replacement Parts 31, Internal 6" Exhaust Collar Shown Guardian 500 Monitor 13, Not Shown Guardian 500 Monitor 19, Internal 6" Exhaust Collar Shown 14, Internal Figure A-2 Protector Work Station for use with Remote Blower Product Service 1-800-522-7658...
  • Page 78 Appendix B: Dimensions and Exhaust Options Product Service 1-800-522-7658...
  • Page 79 Appendix B: Dimensions and Exhaust Options Product Service 1-800-522-7658...
  • Page 80 Appendix C: Protector Work Station Specifications This Appendix contains technical information about all the Protector Work Station enclosures including electrical specifications and environmental operating conditions. Electrical Specifications  10 Amps, 115V, 50/60 Hz  5 Amps, 230V, 50/60 Hz Environmental Conditions ...
  • Page 81 Appendix D: Quick Chart for the Protector Work Stations Model Size Sash Height from Work Surface (inches) 8.00 Total Open Area with Bypass (sq. ft.) 2.50 Exhaust Airflow Volume at 80fpm (CFM) Alarm Airflow Volume at 60 fpm (CFM) *Motor Horsepower (HP) 0.30 *Capacitor (MFD, Volts) 15MFD, 115V...
  • Page 82 Appendix E: References on Ventilation, Safety, Occupational Hazards, Biosafety & Decontamination Many excellent reference texts and booklets are currently available. The following is a brief listing: Laboratory Ventilation Standards Federal Register 29 CFR Part 1910 Non-mandatory recommendations from “Prudent Practices.” ...
  • Page 83 Appendix E: References ASHRAE 110-1995 Method of Testing Performance of Fume Hoods Evaluates fume hood’s containment characteristics  Three part test: Smoke generation, Face velocity profile, Tracer gas release @ 4 liters per minute  Rated As Manufactured (AM), As Installed (AI) and As Used (AU) American Society of Heating, Refrigerating, and Air Conditioning Engineers 1791 Tullie Circle N.E.
  • Page 84 Appendix E: References General References American Conference of Governmental Industrial Hygienists. Industrial Ventilation, A Manual of Recommended Practice, Cincinnati, OH ASHRAE Standard Committee. ASHRAE Standard Atlanta: ASHRAE Publications Sales Department, 1995 British Standards Institution, Laboratory Fume Cupboards. Parts 1, 2 and 3, London: 1990 Department of Labor, Occupational Safety and Health Administration, 29 CFR Part 1910, Occupational Exposures to Hazardous Chemicals in Laboratories,...

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