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#1
Posted 06 September 2014 - 06:23 AM
#2
Posted 06 September 2014 - 06:47 AM
Hi,
I don't know if the query isn't so clear or am not be able to understand...
#3
Posted 08 September 2014 - 10:03 PM
Some water finding pastes have anhydrous cobalt chloride which changes color when it comes in contact with water because hydrated cobalt chloride is blue in color and anhydrous cobalt chloride is colorless.
#4
Posted 15 September 2014 - 04:53 AM
I had a question concerning zone selection in hazardous area classification:
in a plant, i it possible to have a a zone 0 directly covered by zone 2?
A better formulation here would be: is a jump among zones is allowed? that means for example having a zone 2 adjacent to zone 0?, or a non-hazardous area directly adjacent to zone 1?
Thanks in advance
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