Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

40

0.3

Formic  acid

0.3

Rockol 642

20

Drain

100

Water

35

Rechroming

4

Chrome (26/33)

0.5

Rockol FM-222

0.3

Sodium formate

60

Add

0.7

Sodium bicarbonate

30

4.3

Drain

150

Water

35

Neutralization

1

Sodium formate

30

0.5

Sodium bicarbonate

3×15

5

Check Ø with B.C.G

Washing

300

Water

35

10

Drain

80

Water

35

Retannage

5

Rockytan RE-540

30

4

Rockytan RR7

30

2.5

Rockytan LF

3

Rockytan ROS

3

Mimosa extract

3

Dye

30

O.N(Run2min-stop1hour)

Next day(add)

50

Water

1.5

Rockol OFM-345

3

Rockol LNP-375

2

Rockol OPS-322

3

Rockol LNE-918

60

1

Formic acid

2×15

 3.5

Drain

Washing

200

Water

20

5