USTER®
HVI 900
Instruction Manual
Uster Technologies, Inc..
Chapter 9
Version 4.0 (1.99) HVI Applications - Page 9-11
6.6 Example of the Fibrograph Used
by a Merchant
Fifty bales (one lot) of cotton were spot purchased at a gin by a
merchant. One to two bales of this lot were visually checked and
identified to be an MCU-5 variety, fine grade with a staple length of 31
mm (1 ¼”). Following the purchase, the merchant took several bale
samples from the lot and a fiber length distribution was plotted. The
average staple length was found to be 33 mm (5
5
/
16
”). It was found
that several bales were above the average, at staple lengths of 34 mm
(1 •”) and 36 mm (1
7
/
16
”). These bales could be sold at premium.
By segregating these bales, the merchant was more accurately able to
market cotton within a variety to mills desiring those particular lengths.
Since several of the bales within the lot could be sold at premium length,
the entire lot increased in value. This increased the potential revenue to
the merchant and provided the mill with a cotton lot having less total
variation.
6.7 Example of the Fibrograph Used
by a Mill Buyer
A lot (50 bales) of cotton was spot purchased by the mill cotton buyer
with a minimum staple length of 33 mm (1
5
/
16
”), MCU-5 variety with
fine grade. Following the purchase, the mill buyer took several bale
samples from the lot and a fiber length distribution was plotted. The
average staple length was found to be above the average at 36 mm (1
7
/
16
”). These bales were segregated and placed into a mix producing a
finer cotton count.
By segregating these bales, the mill buyer was more accurately able to
segregate the cotton by staple length into appropriate mixes. This
provided the mill with cotton having less overall variation. Over time,
this mix uniformity will improve spinning production and improve
product consistency.
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