Early detection of gas bubbles improves pump performance
6 Jul 2023
TESTA Analytical has published a study demonstrating the use of its Solvent Line Monitor as a monitoring device for safeguarding HPLC, flow chemistry or liquid dosing systems from the problems caused by undissolved gas bubbles.
Dissolved gas is known to impact the performance of peristaltic pumps. The common solution of using a vacuum degasser on the inlet side of the pump is efficient for removing dissolved gas but fails if any undissolved gas bubbles are transported along the tubing. In such cases, undissolved gas bubbles pass the degassing device, unaffected by the vacuum, and reach the peristaltic pump – leading to unreliability and errors in analytical results.
The new study presents dates showing both how dissolved gas can have an impact on the performance of peristaltic pumps and how the novel Solvent Line Monitor device works eliminate resulting problems.
The Solvent Line Monitor features optical and acoustic alarm as well as a digital output which can be used to stop a chromatography or flow chemistry pump before an undissolved gas bubble can affect its operation. The compact and easy-to-use Monitor can be programmed for sensitivity, mode of operation and bubble detection alarms. Its intuitive PC-based app can be used to configure gas bubble detection parameters including the minimum size, frequency, and number of bubbles. The user can also select which action should be taken once an alarm status is detected, such as a simple beep or a stop signal.