Abstract: Improved respirator fit test devices including piezoelectric pumps that reduce noise and vibration of the device. The devices may include two or more piezoelectric pumps, wherein a first pump moves sheath air through a differential mobility analyzer and a second pump alternately moves aerosol from inside or outside a respirator through the differential mobility analyzer. A size selected portion of each aerosol sample is then moved through a condensation nuclei counter. Control circuitry enables user selection of a respirator type to be tested, wherein the differential mobility analyzer may be enabled or disabled based on the user selection. The control circuitry further enables calculation of a fit factor corresponding to a quantitative effectiveness of the respirator fitting a user based on signals from the condensation nuclei counter for each aerosol sample.

Abstract: A system and method for providing 20% ethanol solutions meeting bioburden and endotoxin specifications, which provides the 20% ethanol solution in a ready-to-use form which may be dispensed directly from the container in which the solution is shipped, and which may be used in connection with storage, reuse and/or rejuvination of Protein A.

Abstract: A system and method are provided for applying guidelines to data and providing self-assessment ability. Guideline data is stored in a data storage component, along with user data. The user data represents both quantitative data and qualitative self-assessment data. In a self-assessment system and method, a graphical user interface is provided along with a target image and factor icons. The icons are adapted to be moved onto a position on the target image representative of an entity's self assessment of performance relative to the corresponding factor. A subset of actionable alternatives are selected and displayed based on the self-assessment data and the guidelines.