LabPartnerRx ductless balance enclosures from Mystaire are built to provide a safe and effective environment for weighing or manipulating hazardous compounds. They are engineered specifically for balances and applications that involve manipulating particulate matter. LabPartnerRx enclosures can protect the operator by capturing particulates first in a MERV-9 electrostatically charged prefilter before air enters the main filtration zone. A HEPA filter captures particulates as small as 0.3 microns in size, aiming to deliver efficiency without sacrificing balance stability. The compact, ductless enclosures are factory leak-tested, certified, and shipped fully assembled for simple installation. The MERV-9 prefilter can be changed while the enclosure continues to run and can be bagged inside for added protection from potentially hazardous compounds.