Diffusion Tubes

Diffusion Tubes

Find a local laboratory that does them for the local government

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You can buy this tool from Different local labs. The anticipated price range is Less than $20.

About this tool
Description

Passive NO2 Palmer diffusion tubes - these are "small plastic tubes containing a chemical reagent to absorb the pollutant to be measured directly from the air. In the case of Palmes-type nitrogen dioxide diffusion tubes, the absorbent used is triethanolamine (TEA). Stainless-steel mesh grids at the closed end of the tube are coated with a water-based or acetone-based solution of this absorbent.


Specific pollutants
This tool is recommended for lending libraries.
Used by these projects Community air quality monitoring
Ideal Age Group Elementary school (6 - 10 years), Middle school (11 - 13 years), High school (14 - 17 years), College, Graduate students, Adults, Families, Seniors
(All you need to do is to have a ladder to install this on a lamppost or a balcony)
Training Learning materials are available online.
Use considerations Assembly is required. Callibration is required. This tool relies on lab processing. This tool require consumable materials (e.g. batteries, light bulbs, etc.).
Size & weight Small: This tool would fit in a 6 inch cube.
Less than 13oz (a full soda can weighs a little less than 13oz)
Expected lifetime Should last a few weeks
Topics Ecology & Environment, Geography
Activities At home, At school
Tool updated Feb. 12, 2017, 1:26 p.m.