The Basic Vapors BTIS (PN: 174-0000) is qualitative (yes/no) colorimetric indicator for the saturation and end-of-service life of ductless hood filters. The indicator is designed to provide real-time indication of the breakthrough of basic vapors. Weight: 0.4g (0.02oz). Dimensions: 2.8mm (0.11in), diameter: 31.8mm (1.25in).
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