Gentex PureFlo ESM+ PF50 PAPR P-Series Helmet The Gentex PureFlo ESM+ PF50 PAPR P-Series Helmet is a self-contained head mounted powered air purifying respirator designed for light duty industries including pharmaceutical, chemical, laboratory and healthcare. For best pricing, please call 1-800-952-3293 or email sales@afcintl.com Check out our other available PAPRs here. See Price Options