Guava Technologies, Inc. develops, designs, and manufactures biotechnology and medical devices. Its products include HIV/AIDS monitoring, viacount cell counting and viability assay, antibody quantification assay, apoptosis assay suite, cell cycle assay, cytotoxicity assay, cell proliferation assay, and benchtop cell analysis systems. Guava Technologies also offers flow cytometry systems for cell biology research, drug discovery and development, and HIV/AIDS monitoring. It serves life science research, drug discovery and development, cell biology research, core flow cytometry, and clinical diagnostics markets. The company's products are used in cell counting/viability, antibody quantification, cell cycle and proliferation, cytotoxicity, and apoptosis applications. Guava Technologies, Inc. was founded in 1998 and is headquartered in Hayward, California.

Company was acquired by Millipore Corp.