https://www.fachpack.de/en/ausstellerprodukte/fachpa19/product-10188264/tecpen

The TecPen is a handheld device for oxygen measurement primarily in food packaging and modified atmospheric environments. 80% of the packaging of perishable foods such as fish, meat, cheese, bread and vegetables but also pharmaceuticals, are packaged under a protective and pierceable atmosphere.
One environment which does not contain oxygen, slows down the aging of the food and thus ensures a guaranteed shelf life. With the TecPen, a professional random check of the oxygen content of the protective atmosphere is possible by inserting a needle into the pierceable packaging, sucking out the gas and measuring the oxygen content using the opto-chemical principle.
The TecPen is characterized by its ease of use, due to factory calibration and the built-in display which can be flexibly used, anywhere. The device also features a very high measurement range, starting from 100 ppm, and provides high accuracy for quality assurance used in a wide range of applications. The data taken from the device, then can be stored in the instrument and transferred via USB connection or Bluetooth into excel.
The devices key application and environment settings include food, beverage, pharmaceutical, biotechnology and modified atmospheric packaging (MAP) sectors.
The key advantages for the user in using the TecPen is compact size, digital display for Quality Assurance, data logging capabilities, and reduction of food-related illness.

The Austrian company TecSense, is the innovative supplier of optical and opto-chemical sensor systems for industrial, food industry, welding, safety, and modified atmospheric applications. The company focuses on providing devices which measure oxygen in liquids and gases, as well as CO2.
TecSense's research and development efforts in the field of optical sensor technologies has led to a family of innovative products for monitoring in overall processes, packaging and pierceable containers.

TecSense is managed by Dr. Johannes Krottmaier and Dr. Volker Ribitsch.
The Managing Director Dr. Krottmaier (CEO) has vast expertise in business management and overall product development. He was most recently responsible for the Mercedes G division of Magna International. He contributes the appropriate know-how for management, manufacturing and commercial processes.
Dr. Ribitsch (CTO) is responsible for R&D; he was involved in the technology transfer of research results into industrial products and contributes the technical and project-related know-how. He has extensive experience in general measurement technology for industrial applications and expertise in optical and opto-chemical sensor technology.

TecSense GmbH concentrates on the essential steps such as development, design, assembly and quality assurance of the overall sensor systems. The electronic and mechanical manufacturing is outsourced to specialized companies in Europe.