Before using KEMCOT L surfaces must be free from grease, soils and oxides. RADOL 22-22 (5% in the water at room temperature) is recommended for cleaning and deoxidizing. Parts must thoroughly be rinsed with clean water after cleaning. Rinse tanks should be kept pure and refilled daily.

Brush Application:
Apply to a chemically cleaned surface using the solution undiluted, as received.

Immersion Application:
KEMCOT- L is used as received or diluted with water in a concentration of 33%. For each 100 parts of bath, mix 33 parts of KEMCOT-L and 67 parts of water. The clean aluminum parts are immersed in the KEMCOT L bath at room temperatures of about 30 seconds to 5 minutes depending on the aluminum alloy and the condition of the solution.

Ascertain the pH 1,5 – 2,1 by adding small amounts of ammonium hydroxide or nitric acid if necessary. The pH will normally be within the correct operating range without additions.

After treatment the parts should be thoroughly rinsed with water. First in water at ambient temperature and then with deionized water.

The final dry-off may be accomplished by conventional methods; however, temperature during drying should not exceed 50oC.

Appearance:  Reddish-brown.

pH (neat):  1,5 – 2,1