Millstone Medical Outsourcing, a provider of post-manufacturing and aftermarket services and a portfolio company of Arlington Capital Partners, has bought Ethide Laboratories.

Headquartered in West Warwick, R.I., Ethide offers regulatory testing services for the medical device and pharmaceutical industries. Ethide has capabilities in ethylene oxide residual, microbiology, bioburden, sterility and package integrity testing and environmental monitoring services. Bringing Ethide Labs into the Millstone family of companies aims to improve its range of precision testing services.

“With the specialty testing expertise and proven success of Ethide Labs, we continue to expand the end-to-end support we offer in-house—with the quality and expertise our customers have come to rely on,” states Karl Neuberger, Millstone CEO.