Evaluation of Laboratory Fume Hoods

Schulte, H.F.; Hyatt, E. C.; Jordan, Harry S.; Mitchell, R. N.

doi:10.1080/00968205409343986

Cited by 9 publications

(8 citation statements)

References 3 publications

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“…Six air samplers were used per test, and they were located in the following positions ( Fig. 2): sampler 1 (R-1) was placed under the perforated work surface of the cabinet, beneath and adjacent to the blendor; sampler 2 (R-2) was placed outside of the cabinet, 12 inches (30.5 cm) from the left comer and 6 inches (15.2 cm) from the face opening, level with the work surface; sampler 3 (R-3) was located outside of the cabinet at the re piratory level of an operator seated at the cabine i.e., center front of the unit, 6 inches from the fac opening and 18 inches (45.7 cm) above the wor surface; sampler 4 (R-4) was located outside of tk hood, 12 inches from the right corner and 6 inch from the face opening and level with the work surfacl sampler 5 (R-5) was located 12 inches from the lei corner, level with the work surface and 6 ft (1.97 n from the face opening; sampler 6 (R-6) was locate 12 inches from the right corner, level with the wor surface and 6 ft from the face opening. In genera trials were conducted as follows.…”

Section: Methodsmentioning

confidence: 99%

Microbiological Studies on the Performance of a Laminar Airflow Biological Cabinet

McDade¹,

Sabel²,

Akers³

et al. 1968

Applied Microbiology

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Section: Methodsmentioning

confidence: 99%

Microbiological Studies on the Performance of a Laminar Airflow Biological Cabinet

McDade¹,

Sabel²,

Akers³

et al. 1968

Applied Microbiology

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“…Modifying the entry to improve the airflow pattern at the hood face completed the evolution of the contemporary hood. Studies by Schulte et al (1954) at the Los Alamos Scientific Laboratory revealed that the square vertical posts and front edge of the work surface of the standard hood generated a slight vena contracta at the hood face. The resulting turbulent eddies caused flow reversal and impaired the capture efficiency of the hood.…”

Section: Vertical Sliding Sash Hoodsmentioning

confidence: 99%

“…A major investigation of laboratory hood face velocity was completed by Schulte et al (1954). Hughes (1980) summarized 20 literature citations for the period 1950 -1980 and subsequent studies on face velocity are reviewed in .…”

Section: Face Velocity For Laboratory Hoodsmentioning

confidence: 99%

“…The classifications may be based (1) on the application realm with some inferred level of risk (Coleman, 1951); (2) solely on the toxicity of the chemicals handled in the hood (Brief et al, 1963); or (3) on a classification scheme that includes consideration of the toxicity of the chemical and the laboratory geometry. The third approach utilizes a single recommended face velocity for all hoods in the belief that the minimum face velocity necessary to overcome background air movement in the laboratory will control any chemical air contaminant in a well-designed hood (Schulte et al, 1954).…”

Section: Face Velocity For Laboratory Hoodsmentioning

confidence: 99%

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Reentry

2004

Ventilation for Control of the Work Environment

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“…■ Side walls that are smooth, rounded, and tapered toward the inside of the sash opening [Schulte et al 1954]. …”

mentioning

confidence: 99%

General safe practices for working with engineered nanomaterials in research laboratories.

2012

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To receive documents or other information about occupational safety and health topics, contact NIOSH at Telephone: 1-800-CDC-INFO (1-800-232-4636) TTY: 1-888-232-6348 E-mail: cdcinfo@cdc.gov or visit the NIOSH Web site at www.cdc.gov/niosh.For a monthly update on news at NIOSH, subscribe to NIOSH eNews by visiting www.cdc.gov/niosh/eNews. DHHS (NIOSH) Publication No. 2012-147 May 2012 Safer • Healthier • People TM General Safe Practices for Working with Engineered Nanomaterials in Research Laboratoriesiii ForewordThe National Institute for Occupational Safety and Health (NIOSH) is pleased to present General Safe Practices for Working with Engineered Nanomaterials in Research Laboratories. Engineered nanomaterial applications are rapidly expanding throughout the United States and worldwide. The research community is at the front line of creating these new nanomaterials, testing their usefulness in a variety of applications, and determining their toxicological and environmental impacts.With the publication of this document, NIOSH hopes to raise awareness of the occupational safety and health practices that should be followed during the synthesis, characterization, and experimentation with engineered nanomaterials in a laboratory setting. The document contains recommendations on engineering controls and safe practices for handling engineered nanomaterials in laboratories and some pilot scale operations. This guidance was designed to be used in tandem with well-established practices and the laboratory's chemical hygiene plan. As our knowledge of nanotechnology increases, so too will our efforts to provide additional guidance materials for working safely with engineered nanomaterials. AcknowledgmentsThis document is based on input from several subject matter experts and was initiated as a joint effort under a Memorandum of Understanding between NIOSH and the Center for High-rate Nanomanufacturing (CHN). Some of the specific content was derived from a report generated by Michael Ellenbecker and Su-Jung (Candace) Tsai at the University of Massachusetts Lowell (UMass Lowell), one of the CHN member campuses, and was supported by a contract from the NIOSH Nanotechnology Research Center (NTRC). Paul Schulte is the manager and Charles Geraci is the coordinator of the NIOSH nanotechnology cross-sector program. Special thanks go to Catherine Beaucham and Laura Hodson for writing and organizing this report. Others who contributed substantially to the writing and research include Mark Hoover and Ralph Zumwalde. Executive SummaryNanotechnology, the manipulation of matter at a nanometer scale to produce new materials, structures, and devices having new properties, may revolutionize life in the future. It has the potential to impact medicine through improved disease diagnosis and treatment technologies and to impact manufacturing by creating smaller, lighter, stronger, and more efficient products. Nanotechnology could potentially decrease the impact of pollution by improving methods for water purification or energy conservation....

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Evaluation of Laboratory Fume Hoods

Cited by 9 publications

References 3 publications

Microbiological Studies on the Performance of a Laminar Airflow Biological Cabinet

Microbiological Studies on the Performance of a Laminar Airflow Biological Cabinet

Reentry

General safe practices for working with engineered nanomaterials in research laboratories.

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