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## What is the difference between direct and indirect yarn count methods?

The direct system measures the weight of a consistent length of yarn, with a higher yarn count indicating a heavier and coarser yarn. The indirect system measures the length of a consistent weight of yarn, with a higher yarn count indicating a finer yarn. … The indirect system uses the formula: **N = (L/w) / (W/l)**.

## How is yarn IPI calculated?

The imperfection index (IPI) is the **sum of yarn thin places/ km (-50%)**, thick places/km (+50%) and neps/km (+200%) per kilometer of tested yarn for ring spun yarn [2, 59] .

## What is Tex and Denier?

Cotton Count, Tex, and Denier are three common terms you’ll frequently see in the specs for thread and yarn. … Cotton Count (NeC): The number of 840 yard lengths of material in one pound. **Tex: The weight in grams of 1,000 meters of thread.** **Denier: The weight in grams of 9,000 meters of thread**.

## What is the Tex system?

The tex system, originally devised in 1873, is **a universal method developed for the measurement of staple fibre yarns** and is also applicable to the measurement of filament yarns.

## What is the relation between NM & denier?

OTHER NUMBERING SYSTEMS

Term | Definition |
---|---|

Count Denier [den] | Mass of yarn in grams for length of 9’000 meters. |

Metric yarns number [Nm] | Length in meters per 1 gram of mass. |

English cotton yarn number [Ne], [ECC] | Number of 840 yards strands per 1 English pound of mass. |

## How do you read yarn count?

As a general rule of thumb the **finer the yarn the higher the count number** (see below for why) and metric counts usually are expressed with the count first then the ends – 30/2nm whereas cotton and worsted counts tend to have the ends first then the count – 4/8cc or 3/9wc.

## How many types of count are there?

There are **five variants of COUNT** functions: COUNT, COUNTA, COUNTBLANK, COUNTIF, and COUNTIFS. We need to use the COUNTIF function or COUNTIFS function if we want to count only numbers that meet specific criteria. If we wish to count based on certain criteria, then we should use COUNTIF.

## Which are the factors used in yarn count?

This agrees with the Uster ranking of fiber properties. 30 Among the 19 factors considered, the five most influential factors were **yarn twist, fiber length, yarn count, length uniformity, and fiber strength**. These five factors accounted for 63.4% of the yarn strength prediction (Fig. …