Probenahmetüllen

Probenahmetüllen is a term used in technical literature to denote small port-like attachments designed for withdrawing samples from liquids or gases in a controlled manner. The word combines Probenahme (sampling) and Tülle (tubular nozzle or funnel) and is used in German-speaking industries such as chemistry, environmental analysis, and process engineering.

Construction and design: Most versions consist of a short tube or funnel with a sealing interface (sealing gasket or septum) and, in many designs, a connection to a syringe or sampling device. Materials commonly include stainless steel, glass, and various polymers (for example PTFE or PEEK) depending on chemical compatibility and sterilization requirements. Some designs include valves or check mechanisms to prevent backflow and contamination.

Applications: They are used to collect representative samples from reactors, pipelines, and sampling ports in fields such as water treatment, food and beverage processing, pharmaceuticals, and environmental monitoring. Probenahmetüllen facilitate aseptic sampling and help minimize sample contamination and exposure.

Operation and considerations: Operators attach the probenahmetülle to a sampling port, insert a sampling device to withdraw the sample, and reseal the port after collection. Important considerations include compatibility with the media, ease of cleaning and sterilization, risk of cross-contamination, and compliance with relevant standards (for example ISO, DIN).

Etymology and usage: The term is chiefly found in German-language texts and may be used interchangeably with terms like sampling nozzle, sampling port, or septum port depending on the specific design.