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Formaldehyde Breakthrough Indicator (BTI2). The indicators are reliable and cost effective for protection from exposure to formaldehyde.

Formaldehyde Breakthrough Indicator (BTI2)

Filter Change Indicator

Item No. 411

dimensions: Length = 114.3mm (4.5”), Diameter = 50.8mm (2.0”), Inlet = 1.5” Male NPT


Formaldehyde Breakthrough Indicator (BTI2). Indicates the saturation filters. The indicator is reliable and cost effect for protection from toxic chlorine dioxide. Easily connect to the 1½ inch female NPT outlet of filter using the 1½ inch male NPT threading at the bottom of the indicator. It is sensitive to targeted gases or vapors. The indicator is 4.5-inch-tall, 2-inch diameter. Unique design allow you can observe the bright vibrant color change from all directions.

Formaldehyde Breakthrough Indicator (BTI2) is reusable. Refill Kit Part Number: 411-5000

BTI 2 Refilling Instructions

PN 411

Product Specifications

aWeight:129.5g (4.6oz)
bDimensions:11.43cm (4.5in), diameter 5.08cm (2.0in)
cInlet dimensions:1.5″ MNPT
dOperating temperature:-20oC to 55oC (-4oF to 131oF)
eOperating humidity:5% RH to 85%RH
fMinimum detectable limit:0.3ppm•hr at 30 cm/sec face velocity
gColor change:Brown to blue
hStorage temperature:4oC to 25oC, (39oF to 77oF)
iShelf life:1 year at 4oC to 25oC, (39oF to 77oF)
jService life:1 year

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