Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

40

0.3

Rockol  642

20

Drain

100

Water

35

Retannage I

4

Chrome (26/33)

2

Rockytan RHN

45

1.5

Rockenal DC

30

0.7

Sodium formate

30

4.4

Drain

100

Water

35

Neutralization

2

Rockytan RPR

45

0.8

Sodium bicarbonate

3×15

Drain

5

Check  Ø  with   B.C.G

Washing

300

Water

35

5

80

Water

35

Drain

Retannage II

4

Rockytan RE-808S

30

4

Rockytan RR7

30

3

Rockytan RD

30

3

Rockytan RAB

3

Rockytan ROS

30

4

Mimosa extract

2

Chest nut extract

Dyeing

5

Dye (Brown)

45

Check  Ø  penetration

Add

50

Water

60

Fatliquoring

3

Rockol LNE-918

2

Rockol OFM-345

3

Rockol LNP-375

60

1.2

Formic acid

2×15

3.7

0.1

Rockol OFM-345

5

Drain

Washing

200

Water

20

5