Which scientific equipment company's logo features a distinctive blue square with rounded corners and a stylized letter that resembles both their initial and a laboratory instrument?

In scientific research and industry, certain brands of laboratory equipment have become so ubiquitous that their logos are instantly recognizable to professionals. These iconic symbols represent quality, innovation, and reliability in scientific settings worldwide. Test your knowledge of famous scientific equipment manufacturers and their visual identities that scientists encounter daily in laboratories across the globe.

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Thermo Fisher Scientific (with a stylized 'T' that resembles a thermometer)
Shimadzu Corporation (with a stylized 'S' resembling a chromatography curve)
Agilent Technologies (with a stylized 'A' shaped like a wavelength pattern)
PerkinElmer (with a stylized 'P' designed to look like a microscope)