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Nitrogen Dioxide filter change indicator. The indicator is reliable and cost effect for protection from exposure to toxic nitrogen dioxide.

Nitrogen Dioxide Filter Breakthrough Indicator

Filter Saturation Indicator

Item No. 178

Product Features
Minimum detectable limit: 0.5ppm•hr
Color Change: Off white to gray
Inlet dimensions: ¾” Male NPT
Service life: 14 months

$79.38

Nitrogen Dioxide filter change indicator. It is a colorimetric indicator that indicates the exhaustion of filters. The indicator is reliable and cost effect means for protection from exposure to toxic nitrogen dioxide. It changes color from off white to dark gray when filter is saturated with nitrogen dioxide. Hence alerting the user to replace the exhausted filter.

Connects easily to the ¾ inch female NPT outlet of the filter using the ¾ inch male NPT threading at the bottom of the indicator. It is sensitive to nitrogen dioxide.

Bright vibrant color change from all directions. Unique design prevents any color change due to exposure to contaminants in the surrounding environment. It changes color only when filter is saturated.

PN 178

Product Specifications

a

Weight: 28g (1.0oz)

b

Dimensions:

89.9mm (3.5in), diameter 24.5mm (1.0in)

c

Inlet dimensions: ¾” MNPT

d

Operating temperature: -20oC to 55oC (-4oF to 131oF)

e

Operating humidity: 5% RH to 85%RH

f

Minimum detectable limit: 0.5ppm•hr at 30 cm/sec face velocity

g

Color change: off white to gray

h

Storage temperature: 4oC to 25oC, (39oF to 77oF)

i

Shelf life: 14 months at 4oC to 25oC, (39oF to 77oF)

j

Service life: 14 months
Nitrogen Dioxide filter change indicator.
Useful Links
NIOSH
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