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Hemp fibre analysis (OFDA)
€5.00
Tax included
Objective measurement of the fineness of your scutched or refined hemp fibre: mean diameter, variation and distribution, measured automatically with the OFDA2000. One PDF report per sample, in the language of your choice.
Product customization
Don't forget to save your customization to be able to add to cartNew at Fibre Lab & Co: description and advice included
Your report includes a plain-language description for each sample and, from 2 samples, for the batch, with pointers for next steps. At no extra cost: the “Include the description and advice” box is ticked by default; you can untick it before adding to your cart.
Fineness is one of the first indicators of how well hemp fibre will spin. It depends on variety, harvest date, retting, scutching and refining treatments. Our laboratory measures it with the OFDA2000, the optical fibre diameter analyser used for animal fibres, following an in-house method derived from IWTO-47.
Each sample is opened and cleaned of shives, then the fibre is cut into 10 cm staples, laid on the grooved measuring slide of our sample preparer. The slide is then passed under the instrument's microscope and camera, which measures the fibres automatically; results and histograms are displayed on the screen of the computer connected to the instrument. You get a statistical measurement, free of operator bias, comparable from one batch to the next.
There is no international standard for hemp diameter yet. Our results describe technical fibre bundles as present in your sample, not elementary fibres. They are designed for comparison: fields, retting times, scutching settings, before and after degumming.
The report includes
- sample identification (your references, variety, retting and preparation stage as declared);
- mean diameter (µm), standard deviation and coefficient of variation;
- number of fibres measured;
- diameter class distribution and histogram;
- with the comparison option, a side-by-side summary of your samples;
- the laboratory comment, in the chosen language.
Sample : about 5 g of scutched, hackled or degummed fibre per sample, as a clean sliver, as free of shives as possible. No whole straw.
Shipping : one sealed, numbered bag per sample, a sheet with your references (variety, field, harvest date, retting time, treatment), and the printed order.
Turnaround : 1 to 2 weeks after receipt.
Laboratory preparation : manual removal of shives and dust, conditioning for 24 h at 20 °C and 65 % relative humidity, 10 cm staples laid on the measuring slide, one slide measured per sample. No degumming in the laboratory: we measure the fibre at the stage you send it.
Price : €5 per sample.
Options : several samples (quantity); comparison of 2 to 10 samples in one report (+€5 per order); return of samples (unticked by default).
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Objective measurement of the fineness of your scutched or refined hemp fibre: mean diameter, variation and distribution, measured automatically with the OFDA2000. One PDF report per sample, in the language of your choice.