Markes

Markes is a proper noun with several uses. It is encountered as a surname in English-speaking regions, typically treated as a variant of Marks in onomastic records. In commerce, Markes International Ltd. is a well-known brand in analytical instrumentation. The United Kingdom–based company designs and manufactures sampling and analysis equipment for trace-level chemical analysis, including sorbent tubes, thermal-desorption units, and related accessories used with gas chromatography–mass spectrometry. Its products are widely employed in environmental monitoring, forensics, food safety, and industrial hygiene laboratories.

The term Markes is also used in branding and product naming beyond the company, reflecting the common practice of adopting personal or family names for business lines. Because of its similarity to the ordinary word marks, readers should distinguish Markes as a proper noun when used in company names or as a surname, rather than as a common noun.