# Lab Dip Calculation

Lab Dip Development:
Lab dip is a small swatch of fabric to define the color and its recipe before it goes for bulk dyeing. Lab Dip Calculation and developing Lab dip is one of the primary jobs for a merchandiser to start an order execution. Lab dip is very important for a dying factory. Because bulk production order depends on lab dips. Besides, lab dip plays an important role in shade matching & this is an important task before bulk production. In this article, lab dip calculation is given below.

### Lab Dip Calculation

Usually, the following calculations are followed:

• Dye Solution = (Shade % X Sample Weight) / (Stock solution %) (cc).
• Salt = (Shade % X Liquor) / 1000 (gram per liter, gpl).
• Soda Solution = (Shade % X 100 X Liquor) / (1000 X Stock solution %) (cc).

Sample Calculation for 0.5% Shade:

Sample wt. = 5 mg
Material liquor ratio = 1: 10

Total liquor = (5 X 10) = 50 cc

Dye solution required = (5 X 0.5%) / 1% = 2.5 cc
Salt solution required = (50 X 25) / (20 X 10) = 6.25 cc
Soda ash solution required = (50 X 10) / (20 X 10) = 2.5 cc
Water required = {50 – (2.5 + 6.25 + 2.5)} = 38.75 cc

At the initial stage of dyeing calculation, one needs to calculate the dyeing recipe the lap deep before going for bulk productions. For this, a lot of work is done in the dyeing laboratory. In the dyeing lab, lab dip or sample is developed by the dyeing master. Lab dip plays an important role in shade matching & this is an important task before bulk production. This article just for beginners who are entering into dyeing production the dyeing calculation in lab dip will help them.

```Author of this Article:
Rana Sohel
Executive Engineer
Sunman Textile Mills Ltd. Chittagong
Cell: +8801912-420118
Email: [email protected]```

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