Jute fibers are graded according to three qualities of fibers. They are-

On a basis of fiber properties:
I. Length
II. Strength
III. Fineness
IV. Color
V. Lusture
VI.Roots and cleanliness and uniformity in color.

On the basis of color:

There are two colors-

  • White and golden
  • Brown to red

Corresponding to the main varieties capsularies and olitorius.

On the basis of export:

  • A bottom
  • B bottom
  • C bottom
  • X bottom

On the basis of 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:

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 higher grade(White 35% Tossa 25%)

C-bottoms:

  • Medium strength
  • Any color
  • Free from runners and choppiness.

X-bottoms:

  • Weak, harsh jute
  • Free from tagled jute and stick

Habijabi:

  • Tangled jute
  • Free from any dust and cuttings

Classification of jute fibers according to the quality
(Geographical distribution according to Bangladesh):

  • Jat
  • District
  • Northern

 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 ream to dull grey
  • Its length is shorter.

There are two types of District 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 district of Noakhali, Pabna, Barisal, Jessor, Khulna, Sylhet, Lower Comilla, Chittagong and some part of Dhaka.

Northern:

  • Northern jute is of somewhat inferior quality.
  • The 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.