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Filter Breackthrough Indicators (BTI)

(3.5” x 1”, ¾” male NPT)

Carbon adsorbers and Filters Change Indicators for Acids, Ammonia, ammonia & hydrogen sulfide, aromatic diisocyanates, basic vapors, halogens, hydrazine, formaldehyde, hydrogen sulfide, mercury, nitrogen dioxide and sulfur dioxide

The breakthrough (saturation) indicators are colorimetric indicators that indicate the saturation and exhaustion of carbon adsorbers and filters. The indicators are reliable and cost effect means for protection from exposure to toxic gases and vapors in the work place. Indicators change color when carbon adsorbers, carbon scrubbers and filters are saturated with target gases or vapors. Hence alerting the user to replace the exhausted carbon adsorber or filter. Indicators are available for acid vapors (e.g. hydrochloric acid, nitric acid, acetic acid and sulfur dioxide), ammonia, ammonia & hydrogen sulfide,aromatic diisocyanates vapors (e.g. TDI and MDI), basic vapors (e.g. ammonia and aliphatic amines), halogens (Chlorine, Bromine and Iodine), hydrazine, hydrogen sulfide, formaldehyde, mercury, nitrogen dioxide and sulfur dioxide. The indicators are easily connected to the ¾ inch female NPT outlet of the carbon absorber or filter using the ¾ inch male NPT threading at the bottom of the indicator. It is highly sensitive to targeted gases or vapors. It operates at temperatures -20 - 4oC to 50 - 65oC (-4 - 39oF to 122 -149oF) and humidities 5% RH to 85%RH. The indicator is 3.5 inch tall, 1 inch diameter and you can observe the bright vibrant color change from all directions. The unique design of the indicator prevents any color change due to exposure to contaminants in the surrounding environment and changes color only when carbon absorber or filter is saturated.

Item No. 180
Acids BTI


Product Features

   Minimum detectable limit: 4ppm•min

Color Change: Yellow to red

Inlet dimensions: ¾" Male NPT

Service life: 14 months        

Filters Replacement indicator •  process Vent filter

Item No. 196
Ammonia BTI

Product Features

   Minimum detectable limit: 10ppm•hr

Color Change: Light blue to purple

Inlet dimensions: ¾" Male NPT

Service life: 2 years        


Hydrogen Sulfide Indicator Ammonia Indicator  Process Vent Filter Change Indicator

Item No. 192
Ammonia & Hydrogen Sulfide BTI


Product Features
   
Minimum detectable limit: 10ppm•hr ammonia, 1ppm•min hydrogen sulfide

Color Change: Light blue to purple or black

Inlet dimensions: ¾" Male NPT

Service life: 2 years

Item No. 182
Aromatic Diisocyanates BTI

Product Features

Minimum detectable limit: 4ppb•hr

Color Change: Off white to brownish red

Inlet dimensions: ¾" Male NPT

Service life: 12 months        


Filter Replacement Indicator

Item No. 181
Basic Vapors BTI


Product Features

Minimum detectable limit: 4ppm•min

Color Change: Yellow to green to blue

Inlet dimensions: ¾" Male NPT

Service life: 14 months   

more info

Chlorine dioxide Indicator  paper Pulp Bleaching Cellulose Bleaching

Item No. 188
Chlorine Dioxide BTI


Product Features

 
Minimum detectable limit: 0.3ppm•hr

Color Change: Off white to peach

Inlet dimensions: ¾" Male NPT

Service life: 14 months


more info

Formalin Indicator Filters Replacement Indicator

Item No. 183
Formaldehyde BTI

Product Features
 
Minimum detectable limit: 0.4ppm•hr

Color Change: Brown to dark blue

Inlet dimensions: ¾" Male NPT

Service life: 14 months   

Chlorine Indicator Bromine Indicator Iodine Indicator Process Vent filter Change Indicator

Item No. 195
Halogens BTI

Product Features

   Minimum detectable limit: 0.5ppm•hr

Color Change: Yellow or orange to red or dark blue

Inlet dimensions: ¾" Male NPT

Service life: 12 months        


Hydrazine Indicator MIL-P-87930 Indicator  H-70 Indicator

Item No. 186
Hydrazine BTI

Product Features

   Minimum detectable limit: 0.15ppm•hr

Color Change: Green to black

Inlet dimensions: ¾" Male NPT

Service life: 2 years        


Hydrogen Sulfide Indicator Filter Change Indicator  Process Vent Filter Change Indicator

Item No. 185
Hydrogen Sulfide BTI


Product Features
   
Minimum detectable limit: 1.0ppm•min

Color Change: Light blue to brown

Inlet dimensions: ¾" Male NPT

Service life: 18 months

Mercury Indicator  Mercury II Compounds Indicator  Filters Change Indicator

Item No. 184
Mercury BTI


Product Features

 
Minimum detectable limit: 0.13mg/m3•hr

Color Change: Off white to peach

Inlet dimensions: ¾" Male NPT

Service life: 14 months


more info

Item No. 178
Nitrogen Dioxide BTI


Product Features

   Minimum detectable limit: 0.5ppm•hr

Color Change: Yellow to red

Inlet dimensions: ¾" Male NPT

Service life: 14 months        

Item No. 179
Sulfur Dioxide BTI


Product Features

   Minimum detectable limit: 0.5ppm•hr

Color Change: Yellow to red

Inlet dimensions: ¾" Male NPT

Service life: 14 months        
BTI

(3.5” x 1”, ¾” male NPT)

Carbon adsorbers and Filters Change Indicators for acidsammonia, aromatic diisocyanates, basic vapors, halogens, hydrazine, formaldehyde, hydrogen sulfidemercury, nitrogen dioxide and sulfur dioxide
Filter Change Indicators
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