Gerson 1740 N95 Particulate Respirator with Exhalation Valve – Molded Cup, Made in USA (Box of 10) ISO 10819 3M's field trials found the

3M's field trials found the 2200 Series lasting up to twice as long as standard filters — so a higher unit price can still work out cheaper per hour of use

Is this the genuine MSA GMB cartridge

holding their setting so they do not slide or need re-adjustment

learn the rating system in Respirator Filter Types Explained

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Gerson 1740 N95 Particulate Respirator with Exhalation Valve – Molded Cup, Made in USA (Box of 10) ISO 10819 3M's field trials found theEDITORIAL REVIEW Gerson 1740 N95 Judged on the published NIOSH designation, the protection factor OSHA actually assigns it, and how the format fits a working shift. Assessed by Steven Eaton, WC Safety editor. An air purifying respirator filters air; it does not supply any. Under 29 CFR 1910. 134 no filtering facepiece may be used in an atmosphere that is IDLH or oxygen deficient (below 19. 5% oxygen). Those conditions require a supplied air respirator