**Dyeing Recipe Calculation:**

Dyeing recipe calculation is not a tough task that we have normally seemed. The person who is engaged in the

**textile dyeing industry**has to know the**dyeing**recipe calculation method to dye the fabric perfectly. This article has presented an easy method for calculating dyeing recipe calculation in the textile wet processing sector.**Lab Dip Calculation Method Followed in Textile Dyeing Industry:**

The below equipment has needed to calculate the dyeing recipe in the

**textile wet processing**industry.- Digital weighting meter with glass box (Explorer, USA),
- Digital pipette,
- Microprocessor pH meter.

**Dyeing Recipe Calculation Formula:**

The below formulas have needed to calculate lab dip in the textile dyeing industry.

**1. Amount of dye calculation formula:**

The required amount of dye,

(Weight of the

**fabric**in gram × Shade percentage=…………………………………………………………………………………………

Percentage of Stock solution

**Or,**

The required amount of solution,

Fw × Sp

=……………………

Cs

**Where,**

Fw indicates the weight of yarn, or fiber, or fabric.

Sp indicates the shade percentage,

Cs indicates the concentration of the stock solution.

**2. Auxiliaries or Chemicals Calculation Formula:**

The below formula has to follow to calculate the required amount of auxiliaries or chemicals.

The required amount of solution (mls),

(Weight of substrate x Gram per liquor required x Liquor ratio)

=………..…………………………………………………………………………………………….……

(Concentration percentage of stock solution× 10)

**3. Additional Auxiliaries Calculation Formula:**

The formula for the addition of auxiliaries in solids form such as salt, soda is:

Salt in gram per liquor,

Sample weight x Liquor Ratio× required amount (%)

=…………………………………………………………………………………….……

1000

**4. Percentage to Gram Conversion Calculation Formula:**

Conversion formula from percentage to gram/ liquor is in the below:

Gram per liquor,

= Required amount in percentage x 10

*If alkali concentration is given then the below formula has to follow for calculating this in gram per liquor:*The required amount of solution (mls),

(Weight of substrate x Gram per liquor required x Liquor ratio)

=………………………………………………………………………………………………..……………….

(10 x Concentration percentage of stock solution)

**Or,**

The required amount of solution (mls),

Weight of substrate x Liquor ratio× required amount (%)

= ……………………………………………………………………………………………………….

Concentration percentage of stock solution

**Lab Deep Calculation Example:**

**Recipe:**

**Dyes:**

- Rema Blue RR = 1.122%
- React Red KHW = 2.014%
- React Yellow KHW = 1.486%

**Chemicals:**

Soda Ash (concentration.20%) = 5 gram/liter

Sample Weight. = 5 gram

Caustic Soda = 1.32%

Salt = 70%

Stock Solution (%) = 1

M: L = 1:8

Now, calculate the required recipe for dyes and auxiliaries or chemicals in gram per liter.

**Solution:**

**In the case of dyes,**

We know,

The required amount of

**dye**, (Weight of the fabric in gram × Shade percentage

=…………………………………………………………………………………………

Percentage of Stock solution

Calculation of dyestuff will be,

For,

- Rema Blue RR = (1.12 2x 5)/1=5.61 g/l
- React Yellow KHW = (1.486 x 5)/1= 7.43 g/l,
- React Red KHW = (2.014 x 5)/1= 10.07 g/l

**In the case of auxiliaries or chemicals,**

We know,

Salt in gram per liquor,

Sample weight x Liquor Ratio× required amount (%)

=……………………………………………………………………………………..…………

1000

5×8×70

=……………………….

1000

= 2.8gm

So, the required amount of salt is 2.8gm

**In the case of Soda Ash (Concentration 20%):**

The required amount of solution (mls),

(Weight of substrate x Gram per liquor required x Liquor ratio)

=………………………………………………………………………………………………………………….

(10 x Concentration percentage of stock solution)

5×5×8

=……………………

10×20

= 1ml

So, the required quantity of soda ash in c.c stands at 1.0

**Extra Amount of Water Required:**

= M: L – (Required amount of water to make solution of auxiliaries and dyes)

= [(5 x 8) – {(5.61+10.07+7.43) + (1.0+0.12)}]

= 40 – 24.112

= 15.77

So, 15.77 amount of salt is added in solid form

Good