Description

1. Bath Make-up:

Name	Quantity	Unit
LW-01	20	g/L
Sodium Hydroxide (NaOH)	40	g/L
Water	Balance

2. Operating Conditions:

Name	Quantity	Unit
Temperature	40-65	℃
Time	1-25	min
Free alkali (Sodium Hydroxide)	40-70	g/L

3. Solution Maintenance:

1) Analyze the concentration of free alkali and aluminum ion everyday. It is recommended that the concentration of free alkali in a new make-up bath should be 40g/L. And the alkali concentration and the solution temperature are slowly increased according to the increasing of aluminum ion. LW-01 and alkali should be added with the scale of 1/6–1/3.

2) Normally, the color of the solution is dark-gray. It will be light-grey if lacking of alkali or LW-01, then need to replenish in time.

3) When the etching solution is not being used, keep the temperature around 40℃, or increase the concentration of sodium hydroxide (NaOH) and LW-01 for avoiding precipitations.

4. Packaging and Storage:

Package: Plastic barrel (25kg/barrel,1000kg/barrel)

Storage: Suggested to store in a cool, dry and well ventilated place; away from fire and heat source.