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2. Reducing atmosphere - Wikipedia

   en.wikipedia.org/wiki/Reducing_atmosphere

   Although Early Earth had a reducing prebiotic atmosphere prior to the Proterozoic eon, starting at about 2.5 billion years ago in the late Neoarchaean period, the Earth's atmosphere experienced a significant rise in oxygen and transitioned to an oxidizing atmosphere with a surplus of molecular oxygen (dioxygen, O 2) as the primary oxidizing agent.

3. Flue-gas desulfurization - Wikipedia

   en.wikipedia.org/wiki/Flue-gas_desulfurization

   Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.

4. Flame arrester - Wikipedia

   en.wikipedia.org/wiki/Flame_arrester

   A flame arrester during testing A flame arrester made for a 91 cm (36 inch) pipe weighing 10 tons. A flame arrester (also spelled arrestor), deflagration arrester, [1] or flame trap [2] is a device or form of construction that will allow free passage of a gas or gaseous mixture but will interrupt or prevent the passage of flame.

5. Oxidizing and reducing flames - Wikipedia

   en.wikipedia.org/wiki/Oxidizing_and_reducing_flames

   Reducing, neutral and oxidizing oxyacetylene flames. A flame is affected by the fuel introduced and the oxygen available. A flame with a balanced oxygen-fuel ratio is called a neutral flame. The color of a neutral flame is semi-transparent purple or blue. [1] This flame is optimal for many uses because it does not oxidize or deposit soot onto ...

6. Inert gas - Wikipedia

   en.wikipedia.org/wiki/Inert_gas

   The term inert gas is context-dependent because several of the inert gases, including nitrogen and carbon dioxide, can be made to react under certain conditions. [1] [2] Purified argon gas is the most commonly used inert gas due to its high natural abundance (78.3% N 2, 1% Ar in air) [3] and low relative cost.

7. Robison hits out at lack of exemption for glue traps - AOL

   www.aol.com/robison-hits-lack-exemption-glue...

   Scottish rural affairs minister Jim Fairlie wrote to the Department for Environment, Food and Rural Affairs (Defra) asking that glue traps be made exempt from the Act to allow for the selling ban.

8. HAZMAT Class 2 Gases - Wikipedia

   en.wikipedia.org/wiki/HAZMAT_Class_2_Gases

   A gas is a substance which (a) at 50 °C (122 °F) has a vapor pressure greater than 300 kPa (43.51 PSI) or (b) is completely gaseous at 20 °C (68 °F) at a standard pressure of 101.3 kPa (14.69 PSI). Gases are assigned to one of three divisions division 2.1 Flammable gas; division 2.2 Non flammable, Non-toxic gas; division 2.3 Toxic gas

9. Here are the best mouse traps to use - AOL

   www.aol.com/best-expert-tested-mouse-traps...

   Mice can breed every 30 days. Here are the best mouse traps to get them out fast and keep them out for good.