Envirotech Instruments Private Limited
Envirotech Instruments Private Limited
Okhla Industrial Area, New Delhi, Delhi
GST No. 07AAACE2802R1ZJ
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Gaseous Pollutant Monitoring

Offering you a complete choice of products which include inorganic gas samplers, gas sampler and gaseous sampler.

Inorganic Gas Samplers

Inorganic Gas Samplers
  • Inorganic Gas Samplers
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Approx. Price: Rs 40,000 / UnitGet Latest Price

The APM 433 Gaseous Pollutants Sampler has been designed for monitoring Gaseous Pollutants like SO2, NO2, Cl2, H2S, O3, NH3 etc. in ambient air. The APM 433 is an independent stand-alone monitoring instrument (unlike our gaseous sampling attachments APM 411 and APM 411 TE that need to be paired with a dust sampler). A suction pump is also made an integral part of the sampler, besides a flow-meter, time totalizer and timer. Sampled air is bubbled through suitable reagents that absorb specific gaseous pollutants and the absorbing media analyzed as per standard wet chemical methods.

Special features:

  • Cooling based on Peltier Effect to keep the impingers upto 25ºC below ambient temperature
  • No ice required to keep impingers cool
  • Facility to use impingers with fritted disc for sparsely soluble gases like Nox
  • Special Silica-gel filter tubes to remove entrained particulates & moisture
  • Improved valve design maintains constant flow rate
  • In built suction pump, flow meter, time totalizer and timer for auto start / stop
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Additional Information:

  • Item Code: APM433
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Gas Sampler

Gas Sampler
  • Gas Sampler
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Product Brochure

The APM 411TE is designed as an attachment to operate with Envirotech’s Respirable Dust or High Volume Samplers and PM 2.5 samplers. When paired with an appropriate dust sampler, the APM 411 TE allows the user to collect gaseous pollutant samples (for monitoring SO2, NOx, NH3, Ozone, etc) as well as dust samples simultaneously.

Special Features:

  • Thermo-Electric Cooling system to keep impingers at a cool 15ºC even when ambient temperature is 40ºC
  • Focused cooling for rapid and efficient cooling
  • Special Silica-gel filter tubes to remove entrained particulates & moisture
  • Improved valve design maintains constant flow rate
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  • Item Code: APM411TE
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Gaseous Sampler

Gaseous Sampler
  • Gaseous Sampler
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Product Brochure

The Respirable Dust Sampler is essentially a particulate sampling system requiring a high flow-rate. Gaseous sampling (for NO2, SO2, CL2, H2S, etc) requires only a few LPM of air flow. All models of Envirotech Respirable Dust Samplers are provided with a suction port and mounting hardware to facilitate interface of the Gaseous Sampling Attachment APM 411.

Special Features:

  • Easy manipulation of impingers
  • No heating up of absorbing solutions due to heat from the blower
  • Provision of using ice or cold water bath around impingers for complete  absorption of sparsely soluble gases
  • Facility of taking the impinger tray directly to the laboratory for safer transit of glass parts
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Additional Information:

  • Item Code: APM411
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Reach Us
Chetan Garg (Manager)
Envirotech Instruments Private Limited
A-271, Okhla Industrial Area, Phase-1
New Delhi - 110020, Delhi, India


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