Process

%

Chemical

^oC

Time(min)

PH

Comments

Washing

200

Water

40

0.3

Rockol  L-151

20

Drain

100

Water

35

Retannage I

3

Rockytan RHN

2

Chrome (26/33)

0.3

Sodium formate

45

1.5

Rockenal DC

30

0.7

Sodium formate

30

4.3

O.N (Run 5 min-stop 1 min)

Drain

150

Water

35

Neutralization

1

Sodium formate

30

0.7

Sodium bicarbonate

3×15

5.2

Check Ø with B.C.G

Drain

Washing

300

Water

35

5

Drain

80

Water

35

0.5

Rockol LNP-375

5

Retannage II

3

Rockytan RE–540

30

4

Rockytan RR7

30

2

Rockytan RD

30

2

Rockytan RP2

2

Mimosa extract

Dyeing

3

Dye

60

Check Ø penetration

Add

50

Water

70

Fatliquoring

2

Rockol LNP-375

2

Rockol OPS-322

2

Rockol OFM-345

60

0.7

Formic acid

2×15

4

Drain

Stop 2 hour

50

Water

50

Refatliquoring

1

Rockol LNP-375

1

Rockol LNE-918

30

1

Rockytan ROS

30

0.5

Formic acid

20

3.7

Drain

Washing

200

Water

20

5