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Here's what the experts are saying:

RTP has an AIHA Accredited Laboratory to manufacture each of our passive dosimeter monitors and they also perform all of the analysis on each of the exposed monitors. This provides each customer, as well as your employees, the confidence that the reporting is accurate and within the OSHA and NIOSH standards.

Laboratory has been reaccredited by The American Industrial Hygiene Association (AIHA) for another 3 year period beginning in 2002. This comes after evaluation of our quality assurance procedures and after an on-site inspection.

The American Dental Association (ADA) has evaluated the accuracy of RTP's nitrous oxide badges. Their data indicates that our monitoring badge is accurate. Monitoring badges from two other companies are found to not be acceptable.

In January, 2000 and again in July, 2001 an independent validation study by a Japanese government agency found that our Formaldehyde/Glutaraldehyde Vapor Monitor badge and the ones for benzene, toluene, xylene and styrene are significantly more accurate than required by US OSHA standards.

In August, 2001 the labs quality assurance procedures were examined on-site by an inspector from New York State Department of Health as part of the renewal for our Environmental Laboratory Approval Program accreditation.

In February, 2002 we were granted a Patent by the Government of Japan for technology used in the monitoring badges. This supplements a previous U.S. Patent.

Who needs to monitor?
  • Dental Offices
  • Dry Cleaners
  • Funeral Homes
  • Hospitals
  • Homeowners
  • Laboratories

    

Why should I monitor?

OSHA General Duty Clause: Each employer shall furnish to each of his employees a place of employment which is free from recognized hazards that are causing or likely to cause death or serious physical harm to his employees...

OSHA "Right to Know" - CFR 1910.1200 Appendix E Subpart Z The Hazard Communication Standard (HCS) - Employees have both a need and a right to know the hazards and identities of the chemicals they are exposed to when working. They also need to know what protective measures are available to prevent adverse effects from occurring... When employers have information about the chemicals being used, they can take steps to reduce exposures, substitute less hazardous materials, and establish proper work practices. These efforts will prevent the occurrence of work related illnesses and injuries caused by chemicals...


...additional reasons to monitor


•OSHA 29 CFR 1910.1450, "Occupational Exposure to Hazardous Chemicals
  in Laboratories"

•OSHA CFR 1910.1000 "Air Contaminants Z-1 Table"

•JCAHO "The Environment of Care Standards and Scoring Guidelines"

•JCAHO "Accreditation Manual for Hazardous Materials and
  Waste Management (EC2.4)"

•CDC NIOSH Alert "Request for Assistance in Controlling Exposure to Nitrous
  Oxide Anesthetic Administration"

•NIOSH - National Institute for Occupational Safety and Health
  "Recommended Exposure Limits"

•ACGIH - The American Conference of Governmental Industrial Hygienists
  "TLV's and BEI's Guidelines"


When should I re-monitor?

•Employee changing patterns of movement in the workplace

•Closing of facility doors or windows

•Changes in ventilation from season to season

•Decreases in ventilation efficiency or abrupt failure of engineering
  control equipment

•Changes in the production process or work habits of the employees

•Spill or leak occurrences


Memberships/Affiliations

RTP holds memberships and affiliations in the following:
• American Conference of Governmental Industrial Hygienists -ACGIH
• The Laboratory is Accredited by the American Industrial Hygiene Association-AIHA   

What you will receive:

Dosimeters are available in any quantity that you require and are priced based on the volume that is purchased- call for a quote
toll free 866-382-4694

•One price covers both badge and analysis

•Badges meet and exceed OSHA Requirements

•All badges designed and analyzed using OSHA and NIOSH
  approved methodologies

•All badges can be used as TWA or STEL

•All badges may be stored in ambient (room) temperature

•Standing order programs available

•Rush analysis performed upon request

•Analysis recovery is best when performed closest to exposure date

•Quality control info available upon request

•Independent documentation and Confidentiality

•Results determined within 7 working days


 

 
    

Dosimeters Available:
    
Please contact our office if you require a monitor for a chemical not shown on our list; others may be available.
We have a wide range of monitors listed below However, if you require a monitor for a chemical that is not shown, please call us toll free at 866-382-4694 to determine if one is available.

Acetone
Acetic Acid
Acetonitrile
Acrytonitrile
Allyl Chloride
Amylacetate
Benzene
Benzyl Chloride
Biphenyl Chloride
Butadiene
2 Butanone
2 ButoxyToxethanol
N-Butyl Acetate
Sec-Butyl Acetate
Tert-Butyl Acetate
Butyl Acetate
N-Butyl Alcohol (Skin)
Sec-Butyl Alcohol
Tert-Butyl Alcohol
P-Tert-Butyl Toluene
Camphor
Carbon Tetrachloride
Chlorobenzene
Chlorobromomethane
Chloroform
(Trichloromethane)
1-Chloro-1-Nitropropane
Cumene (Skin)
Cyclohexane
Cyclohexanone
Cyclohexene
Cyclopentadiene
Diacetone Alcohol
P-Dichlorobenzene
Dilsobutyl Ketone
Dimethylformamide (Skin)
Dioxane (Skin)
Enflurane
Epichlorohydrin
Ethyl Acetate
Ethyl Acrylate
Ethyl Alcohol (Ethanol)
Ethyl Amyl Ketone
Ethyl Benzene
Ethyl Bromide
Ethyl Butyl Ketone
(3 Hepatnone)
Ethylene Chlorohydrin
Ethylene Dichloride
Ethylene Oxide
Formaldehyde
Furfural (Skin)
Gasoline
Glutaraldehyde
Heptane
Hexane (N-Hexane)
Hexaneisomers
(Varies w/compounds)
Hydroquinone
Halogenated Agents
Isophorone
Isopropyl Acetate
Isopropyl Alcohol
Isopropyl Ether
Mercury Vapor
Mesityl Oxide
Methyl Acetate
Methyl Acrylate
Methyl Alcohol (Methanol)
Methyl Chloroform
(1-1-1 Trichloroethene)
Methyl Ethyl Ketone
Methyl Isobutyl Ketone
(MIBK)
Methyl Propyl Ketone
Methyl Methacrylate
Naphthalene
Nitrous Oxide
Pentate
Perchloroethylene
(Tetrachloroethylene)
Phenyl Ether-Vapor
Phenol
N-Propyl Acetate
N-Propyl Alcohol
Propylene Dichloride
Stoddard Solvent
Styrene
Toluene
1,1,2,2-Tetra Chloroethane
Trichloroethylene
Vinyl Cholride
Vinyl Toluene
Xylene
Xylene/Toluene Combo
Methylene Chloride
Ethyl Ether
Hydrogen Peroxide
Sevoflurane
** This is a partial list please Contact Us for requests.

 
    

Quality Control and Internal Validation
An unexposed "Blank" badge is stored and always tested with each group positive results. Monitoring badges exposed to known concentrations of the vapors are also analyzed. This gives a "built-in" validation standard of accuracy. A statement of the accuracy can, therefore, be given on each analysis report. Calibration standards are generally traceable to the U.S. National Bureau of Standards. Monitors are calibrated in a specifically designed chamber, with continuous measurement of the vapor concentration. Analysis results are evaluated in terms of the Coefficient of Variation (CV) and the Overall System Accuracy. OSHA usually requires accuracy of +/- 25% with 95% confidence limits. Overall System Accuracy accounts for both accuracy and precision.

Independent Validation of Accuracy

Accuracy of Analysis
As part of the accreditation requirements, the laboratory participates in the NIOSH Proficiency Analysis Testing (PAT) Program. In this program, samples are submitted to the laboratory each calendar quarter. These samples include passive monitoring badges. The chemicals in recent proficiency testing include toluene, xylene, benzene, chloroform, methanol, trichloroethylene and others. The lab has reported accurate results in all 24 tests in the recent past and is rated proficient.

Independent Validation of Monitoring Badge Performance
The Company welcomes opportunities for other organizations to evaluate the performance of the monitoring badges. Recent results are reported below.

Formaldehyde and Glutaraldhyde Vapor:

OSHA PEL = 0.75 ppm
OSHA STEL = 2.0 ppm
OSHA Action Level = 0.5 ppm
(0.75 ppm for 8 hours = 6 ppm x hr)
(2.0 ppm for 15 minutes = 0.5 ppm x hr)
(0.5 ppm for 8 hours = 4 ppm x hr)

The monitoring badges were exposed by the Mitsubishi Chemical Company in a program sponsored by the Government of Japan. United States OSHA requires that the accuracy be better than 25% at the PEL and 35% at the STEL.

The accuracy is reported for exposures measured in ppm x hr. The OSHA PEL of 0.75 ppm for an 8 hour period corresponds to 6.0 ppm x hr. The STEL corre- sponds to 0.50 ppm x hr. The range reported below includes these limits

Exposure Conditions

Coefficient of Variation

Overall System Accuracy

0.53 ppm x hr
0.72 ppm x hr
1.4 ppm x hr
2.4 ppm x hr
3.4 ppm x hr
6.1 ppm x hr
0.0590
0.0237
0.0254
0.0369
0.050
10.0303
16.5%
24.7%
22.0%
14.3%
17.0%
15.9%
    
Nitrous Oxide
The American Dental Association (ADA) has a continuing concern about the exposure of dental workers to nitrous oxide. They evaluated monitoring badges provided by several suppliers. The results were compared to those obtained with calibrated infrared absorption instruments. In a report published by Fan, Batchu, Miaw and Sandrik, they concluded that this monitoring badge is the only accurate badge available for measurement of personal exposure to nitrous oxide. Six samples were at each concentration. The ADA reported results over a wide range of concentrations and are tabulated below.

NO Concentration (ppm)Monitoring Badge Analysis (ppm)
10.0
25.0
50.0
125.0
250.0
500.0
9.0
20.0
47.3
133.8
266.3
654.0

Benzene, Toluene & Xylene

These tests were also done by The Mitsubishi Chemical Co., with monitoring badges provided to them. The exposed badges were shipped to the laboratory in for analysis. (These results are a corroboration of many tests that show no deterioration of the samples due to shipping.)

     Benzene
 
Reference Concentration
Reported Concentration
 
µg/sample
874
874
874
874
ppm
14.04
14.04
14.04
14.04
µg/sample
817
797
839
872
ppm
13.12
12.80
13.40
14.01
Average = 13.33 ppm
= 32.12
C.V. = 0.039
Overall system Accuracy = 12.8%
    
     Toluene
 
Reference Concentration
Reported Concentration
 
µg/sample
864
864
864
864
ppm
15.4
15.4
15.4
15.4
µg/sample
818
828
835
862
ppm
14.6
14.7
14.9
15.4
Average = 14.9 ppm
= 0.308
C.V. = 0.0207
Overall system Accuracy = 7.3%

     Xylene
 
Reference Concentration
Reported Concentration
 
µg/sample
870
870
870
870
ppm
13.3
13.3
13.3
13.3
µg/sample
749
770
782
789
ppm
11.4
11.8
11.9
12.1
Average = 11.81 ppm
= 0.27
C.V. = 0.022
Overall system Accuracy = 15.4%

Additional tests with the xylene monitor badge were performed by The Institute of Occupational Safety & Health, Ministry of Labor, State of Israel. These were field samples collected simultaneously by monitoring badges and sampling pumps with charcoal tubes. The reference method in the table below is the tube results.

Reference Method (ppm)
Monitoring Badge (ppm)
% Error
109.5
2.45
0.20
0.034
112.1
3.00
0.24
0.030
2.3
22.4
0.0
11.7

Other Validation Studies
In addition to the independent validation studies, the laboratory has a contin- uing program to evaluate the accuracy of the monitoring badges. The results can be provided for other chemicals not listed above.

Qualitative and Quantitative Results

Many vapors can be captured in one all purpose badges known as SVOC (semi-volatile organic compounds). These compounds are composed primarily of carbon and hydrogen atoms with boiling points greater than 200 C0 and can be collected by compatible media. Industries utilizing processes that require multiple exposures to these compounds, in varying degrees, seek both qualitative and quantitative results from a monitoring badge.

 

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