	Label requirements
	Detection Limitations
	Simplicity of operation
	Reliability
	Performance Requirements and Features
	Support and Service
	Options and Accessories
	Cost

All detection devices must be used according to manufacturer’s instructions and recommendations. Many types of detection devices require calibration to ensure an accurate measurement. Calibration should be performed according to manufacturer’s instructions and recommended schedule. Detection devices should be treated in the same manner as Personal Protection Equipment and be properly maintained and stored. Just as a properly maintained SCBA may save your life someday, detection devices are used to monitor clearing of methyl bromide from the treatment site. You depend on them to decide when it’s safe for you and your clients to go back into the fumigated area. If the devices give you an erroneous result due to lack of calibration or misuse, or if you have chosen the wrong detection device, your life and your client’s life are at risk and your business is at risk. All detection devices have detection capability limitations. You must select the detection equipment that is appropriate for the types of monitoring you intend to do. The following are detection limits for each type of equipment you may use during fumigation and aeration/clearing:

Detection Device	Detection Limit	Acceptable Monitoring Activity
Halide Torch	50 ppm	Good for Leak check only; cannot be used for clearing after aeration.
Fumiscope	1 oz/1000ft3 (257ppm)	Methyl bromide air concentration during fumigation in the treatment area; but cannot be used for final clearing after aeration.
Electronic Detectors	<1ppm; however not approved for final clearing measurement	All periods of fumigation except cannot be used for the final clearing reading. Electronic detectors can have interferences, such as other organics in the air, which will give inaccurate methyl bromide readings.
Colormetric detector tubes	As low as 0.1ppm	Can be used for monitoring for leaks, but more suitable for final clearing of methyl bromide. Colorimetric tubes are the only approved final clearing device.

The Halide Torch is used only for leak detection. The torch consists of an open flame that changes color (shades of green and blue) in the presence of methyl bromide. The detection limit for the halide torch is ~30-50 ppm and cannot be used for clearing for re-entry after aeration. Fumiscopes have thermal conductivity analyzers and can detect methyl bromide in the 1-100 oz/1000 ft3 range. Note that 1-oz/1000 ft3 is approximately 260 ppm methyl bromide. This is well above the required 5 ppm for clearing a treatment site. For this reason,

Fumiscopes cannot be used for clearing for re-entry. Fumiscopes were designed for monitoring methyl bromide air concentration during the fumigation period. Remember, you can add back methyl bromide gas only if you are monitoring and measuring the methyl bromide concentration. If you do not monitor, you cannot add methyl bromide after releasing the initial dose.

There are many types of electronic detectors. Electrochemical sensors are used in multiple and single gas detection systems and several units are available. Photoionization detectors have a UV lamp sensor and can detect methyl bromide in the 0-2000 ppm range. There are also infrared type sensors available. However, while the sensors used for these types of detectors can measure methyl bromide, they may also respond to other organic vapors that might be present, e.g. fork-lift exhaust. Therefore, while electronic detectors are very useful for methyl bromide readings in the early stages of aeration, these detectors cannot be used for the final clearing reading.

There are several brands of methyl bromide color detection tubes (Draeger, MSA, Sensidyne, Matheson-Kitagawa), which are available in many concentration ranges, some as low as 0.1 ppm. Tubes have concentration range markings to give a direct reading and the length of the color corresponds to the methyl bromide concentration. Use only the detector tubes that are compatible with the corresponding air pump. Always read and follow the detector manufacturer’s instructions. Misuse or not following the manufacturer’s instructions could give you an incorrect result, e.g. false negative reading. Instructions typically

	Instructions for using the pump and tube in the correct orientation and using the correct number of pump strokes.
	Color detection tubes have expiration dates. Make sure you check the date before using the tube. Store the tubes properly and avoid high temperatures.
	Used tubes will fade and not represent the original reading. So, it is not a permanent record. If you need a record of the reading, take a picture of the tube.
	Perform a periodic leak test on the pump. Replace if necessary.

Colormetric Detector Tubes are currently the only authorized way to determine that a site has been cleared to a methyl bromide air concentration of 5 ppm or less. The final methyl bromide air concentration/re-entry clearance reading must be taken with a colormetric tube.

ALWAYS READ AND FOLLOW LABEL DIRECTIONS

Source: Great Lakes Chemical Corporation "Fumigation Fax"

The GLCC Fumigation Fax is distributed by Lisa Braun. If you would like to be included in the monthly distribution, contact Lisa here.

"New Detection Device for Confirming Low Concentrations of
Vikane^® & ProFume^®gas fumigants"

"Approved detection devices that measure low concentrations of Vikane^® and ProFume^® with sufficient sensitivity must be used to confirm structures are sufficiently cleared of fumigant prior to re-entry and re-occupancy. Following the fumigation period and aeration procedure, fumigators must monitor the breathing zones of each area within a structure using an approved detection device of sufficient sensitivity to confirm that the concentration of Vikane or ProFume is at or below the Permissible Exposure Limit (PEL) before allowing re-entry and re-occupancy into the structure.

Recently, Dow AgroSciences LLC completed performance verification tests on a new detection device, SF-ExplorIR™, that uses non-dispersive infrared (NDIR) technology to detect low concentrations of Vikane and ProFume. Results of performance evaluations indicated that SF-ExplorIR demonstrated sufficient sensitivity to detect Vikane and ProFume at low concentrations and met established performance specifications.

The SF-ExplorIR may now be used as an approved detection device to confirm sufficient dissipation of Vikane and ProFume gas fumigants following fumigation and aeration. Other approved detection devices to confirm low concentrations of Vikane and ProFume are the Interscan analyzer (Model GF1900) (see label) and Miran SaphIRe Analyzer (see label). All approved detection devices must be calibrated and used according to manufacturer’s recommendations."

Source: Dow AgroSciences Product Bulletin

Distributor News

Orkin Buys Industrial Fumigant Company

Rollins, Inc. (ticker: ROL, exchange: New York Stock Exchange (.N)) News Release - Sep-19-2005

Rollins, Inc. Announces Agreement to Acquire The Industrial Fumigant Company

ATLANTA--(BUSINESS WIRE)--Sept. 19, 2005--Rollins, Inc. (NYSE: ROL) a premier North American consumer and commercial services company, today announced that it has entered into a definitive purchase agreement to acquire The Industrial Fumigant Company, (IFC). The transaction is expected to close in October.

From its founding in 1937, IFC has been dedicated to pest management in the Food and Commodity Industries and has a proud legacy of service under the guidance of Don Wilbur and Jim Arnote. In 1996 the company was sold to its employees and has been owned by the IFC Employee Stock Ownership Plan since. Its concentration on a specific industry segment has led IFC to a position of leadership in matters of food plant pest management, auditing, and training. Since being acquired by its employees, IFC has increased its nationwide coverage to 25 offices and 17 warehouses. Based in Olathe, Kansas, IFC employs over 130 associates who have helped build an innovative culture, focused on bringing the latest proven technology available to the food industry. With revenues in excess of $26 million, the company is the 24th largest company in the pest control industry. You can learn more about IFC by visiting their web site at www.indfumco.com.

Gary W. Rollins, President and Chief Executive Officer of Rollins, Inc., said, "We are extremely pleased to announce this agreement with IFC which is consistent with our strategic plan to accelerate growth in commercial services. Under the leadership of Mike Newland, IFC has earned great loyalty from its customers and employees. Although they will continue to operate independently, we hope to learn a great deal from Mike and his team of experts."

Mike Newland, President and Chief Executive Officer of IFC, stated, "This announcement marks a great day for many people. Rollins, Inc. is adding another jewel to their crown as leaders in the pest management industry. Their business ethics, acumen and hard work have been admired by IFC's management for some time. IFC's greatest asset and resources has always been its people. The combination of IFC's employees and Rollins' resources will be very beneficial to the food industry. This partnership will be a win, win situation, for the employees, the customers, and the Company. IFC will be able to address its customer's needs on a much larger geographical scale and in areas beyond our core business."

Rollins, Inc. is a premier North American consumer and commercial services company. Through its wholly owned subsidiaries, Orkin, Inc. and Western Pest Services, the Company provides essential pest control services and protection against termite damage, rodents and insects to approximately 1.7 million customers in the United States, Canada and Mexico from over 400 locations. You can learn more about Orkin by visiting our Web sites at www.orkin.com, www.westernpest.com and www.rollins.com. You can also find this and other news releases at www.rollins.com by accessing the news releases button.

Caution Concerning Forward-Looking Statements

This release contains statements that constitute "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. These include statements regarding the expected closing date for the IFC transaction and its benefit to the food industry. The actual results of the IFC transaction could differ materially from those indicated by the forward-looking statements because of various risks and uncertainties, including without limitation, general economic conditions; market risk; changes in industry practices or technologies; the ability of IFC and the Company to identify and capitalize on business opportunities arising from the transaction; the Company's ability to integrate IFC into its operations; climate and weather trends; competitive factors and pricing practices; potential increases in labor costs; uncertainties of litigation; and changes in various government laws and regulations, including environmental regulations. All of the foregoing risks and uncertainties are beyond the ability of the Company to control, and in many cases the Company cannot predict the risks and uncertainties that could cause its actual results to differ materially from those indicated by the forward-looking statements. A more detailed discussion of potential risks facing the Company can be found in the Company's Report on Form 10-K filed with the Securities and Exchange Commission for the year ended December 31, 2004.

    CONTACT: Rollins, Inc., Atlanta
             Harry J. Cynkus, 404-888-2922

    SOURCE: Rollins, Inc.

"New Detection Device for Confirming Low Concentrations of Vikane® & ProFume® gas fumigants"

Source: Dow AgroSciences Product Bulletin

"New Detection Device for Confirming Low Concentrations of
Vikane^® & ProFume^®gas fumigants"