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From July 12th to July 19th our shipping lead time will be five business days.
Acid Vapors Breakthrough Indicator (BTI2). The indicators are reliable and cost effective for protection from exposure to acid vapors.

Acid Vapors Breakthrough Indicator (BTI2)

Acid Vapors Filter Change Indicator

Item No. 401

Filter Change Indicator

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


Acid Vapors 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.

Acid Vapors Breakthrough Indicator (BTI2) is reusable. Refill Kit Part Number: 401-5000

BTI 2 Refilling Instructions

PN 401

Product Specifications

a Weight: 129.5g (4.6oz)
b Dimensions: 11.43cm (4.5in), diameter 5.08cm (2.0in)
c Inlet dimensions: 1.5″ MNPT
d Operating temperature: -20oC to 55oC (-4oF to 131oF)
e Operating humidity: 5% RH to 85%RH
f Minimum detectable limit: 1ppm•hr at 30 cm/sec face velocity
g Color change: Orange to dark red
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

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