OFDA 100 is the most widespread automatic instrument to measure fibre fineness distribution (diameter or micron). Over 135 instruments are in use in 22 countries, measuring wool, mohair, synthetic and other fibres. The primary testing method is IWTO TM-47-95.The fineness distribution is important in determining the comfort of clothing. Market research results have shown that certain garments over 5% of fibres with a diameter greater than 30um have a prickly feel to people. In addition fibre slivers with a narrow fineness distribution will spin better quality yarn.

OFDA 100 is the only instrument that measures the opacity of fibres. This allows measurement of the percentage of medullated (hollow) fibres in a sample of wool or mohair. These fibres are weaker, and have a different color in dyed garments. Medullation is difficult to judge by eye, and can lead to claims against fibre suppliers when the final product reveals the problem after dyeing. The OFDA testing method for measuring medullation and opacity is IWTO TM-57.

OFDA 100 is the first rapid image analysis system to measure fibre curvature. Curvature is directly related to the crimp of the fibre, and is important in determining the yarn evenness and softness of handling of a finished fabric. In general, at a fixed micron, a lower curvature fibre will provide a lower bulk and a softer feel. Cashmere and mohair have a low curvature (low crimp frequence) at their respective fineness.

Product Highlights

The product is unique world-wide (accurate fineness, medullation and curvature (crimp) measurement) fast, reliable, easy to use, and is the ideal replacement for the airflow and FDA fineness measurement instruments.

OFDA 100 Advantages and Benefits

  • Is the fastest individual fibre measuring instrument: up to 12,000 fibres per minute
  • can measure fibre curve which is a component of crimp that is measurable at all stages of wool processing.
  • can measure medullation which is the hollowness of fibres that causes dyeing and breakage problems.
  • does not utilise flammable chemicals that require storage, mixing, and continuous monitoring.
  • saves time – no regular cleaning of a sump required.
  • doesn’t need to be left running 24 hours per day.
  • allows you to see the fibres that are being measured.
  • saves images of fibres: edit or print them using your favourite paint program, insert them into documents, etc
  • keep slides of different fibre samples such as wool, mohair, alpaca for re-measuring.
  • measures up to 300 microns, in case you want to measure exotic fibres such as cashmere.
  • is semi-portable for demonstrations at different sites – OFDA comes with a fibreglass carry case.
  • all data can be exported to spreadsheets for further analysis.
  • can be operated by modem for software support from the factory.
  • does not require a technician – it can be easily installed by the customer.