My Country's Electronic-Grade Water Quality Technical Standards (GB11446-1-89)

Resistivity MΩ·cm (25℃)

18
90% of the time minimum 17

15
90% of the time minimum 12

10
90% of the time minimum 8

≥2

≥0.5

Number of particles larger than 1 μm, maximum value, particles/mL

1

5

10

100

500

Number of particles larger than 0.5 μm, maximum value, particles/mL

100

300

500

1000

2000

Bacterial count, maximum value, CFU/mL

1

5

10

50

100

Total organic carbon content, maximum value

50

100

200

1000

1000

Total silica content, maximum value

2

20

50

100

1000

Chlorine content, maximum value

0.5

2

10

100

500

Copper content, maximum value

0.2

2

5

50

500

Potassium content, maximum value

0.5

5

10

100

1000

Sodium content, maximum value 0

0.5

6

10

200

500

Zinc content, maximum value

0.2

2

10

100

500

Aluminum content, maximum value

0.5

5

10

100

500

Iron content, maximum value

0.5

5

10

100

500

Calcium content, maximum value

0.5

5

10

100

500