Laboratory system and method for sampling reactor contents

A sample extraction device configured for extracting a sample from a reactor, the sample extraction device comprising:

• a sample channel configured to extend into a reactor volume of the reactor, the sample channel comprising a sample channel entrance configured to be arranged below a liquid level of a reaction liquid in the reactor volume,
• a secondary fluid channel configured to extend into the reactor volume, the secondary fluid channel comprising a secondary fluid channel entrance configured to be in fluid communication with the reactor volume,
• a sampling fluid connection connected to the sample channel, configured to provide a pressurised sampling fluid to sample extraction device via the sampling fluid connection, wherein the sampling fluid is preferably an inert gas such as nitrogen gas,
• a secondary fluid connection,
• a sample extraction outlet,
• an offgas connection,
• a buffer volume arranged between the sampling valve and the sampling fluid connection,
• a valving system connected to the sample channel, the secondary fluid channel, the sampling fluid connection, the secondary fluid connection, the sample extraction outlet, and the offgas connection,
• the valving system comprising a sampling valve,
• wherein:
• the sampling valve is arranged between the sampling fluid connection and the sample channel entrance,
• the sampling valve comprises a sampling space with a cavity volume,
• the sampling valve is movable to a sampling position and to a transportation position,
• the sampling space is in fluid communication with the sample channel in the sampling position of the sampling valve, and
• the sampling space is in fluid communication with the sample extraction outlet in the transportation position of the sampling valve.