MultiVapor™ has been updated to resolve the errors users experienced with a missing MSSTDFMT.DLL file, and other minor typographical errors.
MultiVapor™ is a computer tool for estimating breakthrough times and service life of air-purifying respirator cartridges manufactured to remove toxic organic vapors (OV) from breathed air. It can also be used for larger filters and for carbon beds of any size prepared for laboratory studies. MultiVapor 2.2.5 was updated in June 2018. This latest version incorporates 26 new compounds, including CN, HDMI, and MMA. The library now contains over 750 compounds.
A breakthrough time is the time following the first and continuous use of a cartridge after which the user of the cartridge could be exposed to a selected concentration of a harmful vapor. This is the consequence of the cartridge being used up. Service life is the breakthrough time with, possibly, a safety factor applied.
MultiVapor™ is intended to help an industrial hygienist, or other qualified person set cartridge change-out schedules. It is NOT a substitute for regulatory requirements or professional judgments.
Users must assume full responsibility for any application of the MultiVapor™ computer software. No warranties related to the software are expressed or implied by the National Institute for Occupational Safety and Health (NIOSH) or its contractors. This software is intended to provide estimates based on the latest scientific information. The accuracy of any such estimates will depend in part on the accuracy and validity of the data entered by the user. CLICK HERE