# Textile Calculation

## Yarn Number or Count Measurement System

Yarn Number or Count Measurement System
S. M. Hossen Uzzal
Production Officer
Monno Fabrics Ltd., Manikgonj
Email: uhossen@gmail.com

Count:
Count of yarn is very important to produce specific quality yarn. It is the coarseness or fineness of yarn. In the other hand, we can say count is a number is determined the mass per length or the length per unit.

Count Measurement System:
There is two systems for the measurement of count.

1. Direct System
2. Indirect System
Direct System:
In this counting system, the yarn number or count is the weight of a unit length of yarn. Here, higher the number, finer the yarn and vice versa. Here, the weight of yarn is fixed, length is variable.

Formula:

W X l
N = …………….
w X L

Where,

N = Yarn count
L = Length of sample
l = Unit length
W = Weight of sample
w = Unit weight

Commonly used units in this system of measurement are:-

• Tex ( 1 Tex = 1g/ 1000m )
• Spyndle (1 Syndle = 1lb/14400yds)
• Denier ( 1 Denier = 1g/ 9000m )
Indirect System:
In this counting system the yarn number or count is the length of a unit weight of yarn. Here, lower the number, finer the yarn and vice versa. Here, the length of yarn is fixed, weight is variable.

Formula:

L X w
N = ………………..
l X W

Where,

N = Yarn count
L = Length of sample
l = Unit length
W = Weight of sample
w = Unit weight

Commonly used units in this system of measurement are:-

• Cotton or English Count
• Metric Count
• Worsted Count