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E-grade water is used to remove contaminants from parts before processing and manufacturing.
Neu-Ion Inc. designs, installs, and services high purity water systems
satisfying electronic grade water quality requirements!
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Resistivity Megohm
cm @ 25 C
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18.2
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18.2
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18.2
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17.5
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12
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0.5
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SiO2 (total) max
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3
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0.5
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0.5
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10
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50
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1000
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Viable Bacteria max (mL)
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1/1000
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1/1000
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.1/1000
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10/1000
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10/1.0
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100/1
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Total organic carbon
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5
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2
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1
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50
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300
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1000
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Endotoxins(EU/mL)
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0.03
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0.03
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0.03
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0.25
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NA
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NA
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Copper
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0.05
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0.02
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0.002
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1
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2
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500
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Zinc
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0.05
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0.02
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0.002
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1
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5
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500
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Nickel
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0.05
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0.02
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0.002
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1
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2
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500
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Sodium
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0.05
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0.02
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0.005
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1
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5
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1000
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Potassium
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0.05
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0.02
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0.005
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2
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5
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500
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Chloride
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0.1
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0.05
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0.02
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1
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10
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1000
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Nitrate
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0.1
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0.05
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0.02
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1
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5
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500
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Phospate
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0.1
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0.05
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0.02
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1
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5
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500
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Sulfate
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0.1
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0.05
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0.02
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1
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5
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50
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For a full listing of standards, visit www.astm.org.
They have published a Standard Guide for Ultra Pure Water Used in the Electronics and Semi-conductor Industry.
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