Charles River Laboratories Announces a New Facility in Korea to Provide Endosafe Products and Services

Charles River Laboratories International (NYSE:CRL) proudly announces the establishment of Charles River Endosafe Korea. Effective May 1, 2007, Endosafe products will be sold and supported directly by the new, wholly owned Korean operation.

The focus of Endosafe Korea's scientific staff will be to promote and ensure regulatory compliance, to expand sales of Endosafe products in Korea, and to provide enhanced and focused technical service and support for our Asian customers. The new Korean facility will directly supply Endosafe products ensuring customers rapid product availability and direct communication with the supplier. Customers will also receive technical support with response to questions provided by in-house experts with extensive experience running LAL assays and performing laboratory testing.

Hongjin Min will be the Managing Director of the operation. Mr. Min is known throughout the Asian countries for his extensive knowledge of endotoxins and LAL test methods. He has been a prominent speaker at numerous training workshops and has provided a range of hands-on training courses to customers.

"We are excited to open the new Korean facility and to provide direct sales and service to the growing Korean market. We have known Hongjin for many years and know his technical expertise, strong business acumen and long-term relationships with customers will ensure the success of this new operation. His dedication to clients is steadfast and will contribute to the continued commitment of our Korean customers to Endosafe products," explains Foster Jordan, Corporate Vice President for In Vitro Products at Charles River Laboratories.

Click www.criver.com for contact information on Endosafe Korea or call 1-877-CRIVER-1 for additional information.

Caution Concerning Forward-Looking Statements. This news release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of words such as "anticipate," "believe," "expect," "will," "may," "estimate," "plan," "outlook," and "project" and other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. Forward-looking statements include the statements in this notice regarding Charles River's expectation regarding the markets for and potential applications of the PTS systems. Charles River cannot guarantee that the markets for PTS will develop as expected, or that specific applications of the PTS system will be viable. Forward-looking statements are based on Charles River's current expectations and beliefs, and involve a number of risks and uncertainties that are difficult to predict and that could cause actual results to differ materially from those stated or implied by the forward-looking statements.

A further description of these risks, uncertainties, and other matters can be found in the Risk Factors detailed in Charles River's Annual Report on Form 10-K as filed on March 14, 2006, as well as other filings we make with the Securities and Exchange Commission. Charles River assumes no obligation and expressly disclaims any duty to update information contained in this release except as required by law.