Items standards Appearance homogeneous, dark blue to green liquid Content of a.I. 20% Water insolubles 0.3% Ph 4.0~7.0 Free 4, 4'-bipyridyl 0.1% Solution stability (as 5% aqueous solution) No color change Sediment maxium: trace Solid particles: pass throug 45m sieve. Stability at 0¡æ the volume of solid and/or liquid which separates shall not be more than 0.3 ml. 25kg bag, 1 l bottle, 5 l bottle..…
