MSA Hydrophobic Filter for FiveStar Alarm & Passport Personal Alarm

The MSA Safety 454-710917 hydrophobic filter is a replacement component designed specifically for FiveStar Alarm and Passport Personal Alarm gas detectors. This filter blocks moisture while allowing gas vapors to pass through, protecting the sensor from water damage that could cause false readings or equipment failure. Built to MSA's specifications for reliable operation in industrial environments.

This hydrophobic filter maintains the detection accuracy of your gas monitoring equipment by preventing water ingress into the sensor chamber. The filter's hydrophobic properties repel liquid water while remaining permeable to target gases, ensuring your detector continues providing accurate readings in humid conditions or when exposed to moisture. Made in the USA under MSA's quality standards.

Regular filter replacement keeps your gas detection equipment operating at peak performance. This filter fits both FiveStar Alarm and Passport Personal Alarm models, making it suitable for confined space entry, industrial monitoring, and personal protection applications where gas detection is critical for worker safety.