Count | Count measureemnt system | Count conversion system

Count: Count is a numerical expression by which we denoted the coarseness or fineness of textile materials such as yarn.

Acceding to the textile Institute: Count is defined as “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:
 

Where,   N =  Yarn count
               L = Length of sample
               l =  Unit length
               W = Weight of sample

 Commonly used units in this system of measurement are:-

1. Tex ( 1 Tex = 1g/ 1000m )
2.  Spyndle (1 Syndle = 1lb/14400yds)
3. 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:

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:-

1. Cotton or English Count
2. Metric Count
3. Worsted Count

English count (Ne): It is an indirect system of count. It is defined as follows- No of hank of 840yds length per pound or No of hanks (840yds = 1hank) per lb

Tex: It is a direct system of count. It is defined as follows- No of grams per Kilometers or 1000meters.

Denier: It is a direct system of count. It is defined as follows- No of grams per 9 kilometers or 9000meters.

Metric count (Nm): It is an indirect system of count. It is defined as follows- No of kilometers per Kilograms. 

Jute count/Spyndle: It is a direct system of count. It is defined as follows- No of lbs per 14400 yds

Worsted count: It is an indirect system of count. It is defined as follows- No of hank of 560yds length per pound.

Chart for Direct system

 Chart for Indirect system

Conversion of count

For cotton yarn, length of 1 Hank = 840 yards. Whenever the type of count is not mentioned with the count, it is understood that it is the English count.