References
VisionLab monitors lifetime of valves and filters

VisionEC-Lab Ltd. with 14 years of experience in Laboratory Field has announced a new line of laboratory products which brings you safety and comfort into your laboratory. With their existing wide product portfolio available worldwide, also committed to the improvement of existing products and development of new product lines.

Their safety products are used for chromatography systems, all are to avoid the employees of harmful gasses, therefor they use the Timestrip time indicators on the valve and the adsorbent filter, as both have a 6-month lifetime!

https://www.visionsafetycap.com