Raw Jute fibers are graded according to three qualities of fibers. They are-
On the basis of Raw Jute fiber properties:
I. Length
II. Strength
III. Fineness
IV. Color
V. Lusture
VI.Roots and cleanliness and uniformity in color.
On the basis of Raw Jute color:
There are two colors-
- White and golden
- Brown to red
Corresponding to the main varieties capsularies and olitorius.
On the basis of Raw Jute export:
- A bottom
- B bottom
- C bottom
- X bottom
On the basis of the quality of raw jute:
- Pucca grading
- Kutcha grading
Pucca grading:
Raw jute from which roots have been cut.
White jute:
Bangla white special (BWS):
- White or creamy
- Finest texture
- Very good luster, clean, well hackled
- Completely free from any defects
- Entirely free from red ends
Bangla White-A (BW-A):
- White to light cream
- Fine texture
- Strong and very good luster, clean
- Completely free from red ends and any blemish
Bangla White-B (BW-B):
- Light cream to straw color
- Good texture
- Strong and good luster, well hackled
- Free from blemish and red ends excluded
Bangla White-C (BW-C):
- Light grey or light reddish to straw color
- Sound strength
- Average luster
- Clean but free from croppy or hard gummy
- Tops and roots and red soft ends are permissible.
Bangla White-D (BE-D):
- Any color
- Average strength
- Occasional bark and specks permissible
- Slightly croppy and gummy tops permissible
- Red ends also permissible
Bangla White-E (BW-E):
- Any color
- Any strength but free from perished fibers
- Unrated jute
Tossa Jute:
Bangla Tossa Special (BTS):
- Uniform golden or reddish color
- Finest texture
- Very strong
- Very good luster
- Clean cut and well hackled
- Completely free from any defects.
Bangla Tossa-A (BT-A) :
1
- Uniform sliver grey to golden color
- Fine texture
- Strong and good luster
- Clean cut and well hackled
- Completely free from any blemish.
2.
- Uniform light golden to reddish color
- Fine texture
- Strong and good luster
- Clean cut and well hackled
- Completely free from any blemish.
Bangla Tossa-B (BT-B):
1.
- Light to medium grey color
- Sound clean
- Good texture
- Average luster
- Clean cut and well hackled
- Free from any defects
2.
- Light grey or reddish excluding dark gray color
- Sound clean
- Good texture
- Average luster
- Clean cut and well hackled
- Free from any defects
Bangla Tossa-C (BT-C):
- Mixed colors
- Average strength
- Occasional bark and soft specks allowable
- Free from runners
- Slightly croppy and gummy tops permissible
- Well cut and hackled but free from black root ends.
Bangla Tossa-D(BT-D):
- Mixed colors
- Average strength
- Occasional bark and specks allowable
- Free from runners
- Croppy and gummy tops permissible
- Rough cut and hackled
- Free from black root ends
- Any color
- Any strength but free from unretted jute
- Stick and perished fibers
- Rough cut and hackled bark and hard Centre permissible
Kutcha grading of Raw Jute:
Raw jute from which roots have not been cut.
Kutcha bales are graded as follows-
- Tops
- Middle
- Bottoms
- B-bottoms
- C-bottoms
- X-bottoms
Tops:
- Very strong jute fibers
- Excellent color and luster
- Free from all defects
- Cutting not more than (White 15% Tossa 10%)
Middle:
- Strong sound jute fibers
- Average color and luster
- Free from all specks runners and harsh crop end (White 25% Tossa 15%)
Bottoms:
- Sound fibers
- Medium strength
- Free from all hard centered jute (White 30% Tossa 20%)
B-bottoms:
- Sound fiber
- Medium strength
- Not suitable for a higher grade(White 35% Tossa 25%)
C-bottoms:
- Medium strength
- Any color
- Free from runners and choppiness.
X-bottoms:
- Weak, harsh jute
- Free from tangled jute and stick
Habijabi:
- Tangled jute
- Free from any dust and cuttings
Classification of raw jute fibers according to the quality
(Geographical distribution according to Bangladesh):
Jat:
- Jat is the finest quality jute with firm
- It has good color and length
- It has good luster
- This type of jute fiber grows in the district of Mymensingh, Dhaka and Comilla.
District:
- District jute is close to jat in quality.
- The Jute fiber is not uniform in textures and strands
- Its color varies from light cream to dull grey
- Its length is shorter.
There are two types of District raw jute fibers. They are-
- Hard district
- Soft district
Hard district: The hard district jute fiber is better than the soft district.It mainly grows in the district of Faridpur
Soft district: This type of jute fiber grows in the district of Noakhali, Pabna, Barisal, Jessor, Khulna, Sylhet, Lower Comilla, Chittagong, and some part of Dhaka.
Northern:
- Northern Raw Jute is of somewhat inferior quality.
- The Raw Jute fiber is dull-colored fluffy hairy and barky
- Generally medium length and weak.
- This type of jute grows in District of Rangpur, Dinajpur, Bogra, and Rajshahi.