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Standard Methods for the Examination of Water and Wastewater

Deliver reliable water analysis, assuring quality and safety

These standard methods are compiled standards from the American Water Works Association (AWWA), American Public Health Association (APHA) and Water Environment Federation (WEF).These documents offer a comprehensive reference with the most current lab methods for water and wastewater analysis. These water and wastewater standards ensure you can:

  • Increase testing accuracy
  • Filter for additional contaminants
  • Minimize risk

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Apr 27

VFD For 2 Motors Driving Same Equipment - CONTINUATION and DECISION ARRIVED

Three weeks back I have posted a problem about VFD Motor and Gear Box and the link is http://cr4.globalspec.com/thread/111882#newcomments Please open this link and read so that you can re-call your memory for this topic, and read furthe below. 23 Members have responded with good suggestions and I a

Apr 27

Terminology

This one seems kind of stupid so keep the laughter down Came across something today on a drawing by a company from a different company. Its a spec they say "short circuit resistance" Its measured in amps? Seems rather perplexing. Are they referring to the short circuit availability on the feede

Apr 27

UL508A 3 Phase Color Code?

Hello I have a copy of UL508A Trying to locate the appropriate wire color for 3 phase wiring I was always under the impression of the following L1 = Brown L2 = Orange L3 = Yellow Does someone happen to know the section of 508A that describes this for reference? Thanks

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