|
Items
|
Specification
|
|
Hazen(Hazen unit; Platinum-cobalt scale)
|
20
|
|
HCOOH min.
|
85%
|
|
Chloride (as Cl) max.
|
0.005%
|
|
Sulfate (as SO4) max.
|
0.002%
|
|
Metals (as Fe ) max.
|
0.0005%
|
|
Dilution test (Acid+Water=1+3)
|
Clear
|
|
Evaporation residue max.
|
0.02%
|
