Tests synthetic

Visual and Manual Tests. Synthetic fibers are generally mixed with other fibers to achieve a balance of properties. Acryhc staple may be blended with wool, cotton, polyester, rayon, and other synthetic fibers. Therefore, as a preliminary step, the yam or fabric must be separated into its constituent fibers. This immediately estabUshes whether the fiber is a continuous filament or staple product. Staple length, brightness, and breaking strength wet and dry are all usehil tests that can be done in a cursory examination. A more critical identification can be made by a set of simple manual procedures based on burning, staining, solubiUty, density deterrnination, and microscopical examination. 

Burwash, M. D., Tobin, M. E., Woolhouse, A. D., and Sullivan, T. P. (1998). Field testing synthetic predator odors for roof rats (Rattus rattus) in Hawaiin macadamia nut orchards. Journal of Chemical Ecology 24,603-630. 

This work needs to be completed by performing more behavioral tests and also electro-physiological assays to test synthetic and natural blends as well as isolated compounds. We know that non-congenerous HCs can be detected by ant antennae (see Chapter 10 for a review) so it should be possible, since the chemicals are available, to perform similar sensory physiology tests on pectines, which seem to have a function in the detection of contact chemicals (G. and B 2001) or other chemosensory sensitive parts of the scorpion body. In conclusion this chemical ecology work is only preliminary, but it appears to point in the same direction as behavioral studies by our American colleagues. 

ASTM D1992-91(2001) Standard Guide for Testing Synthetic Plasticizers Used in Rubber... 

All specimens were polished through 600-grit abrasive before testing. Synthetic ground water used in these tests was prepared according to GR-4 specifications. The packing material used consisted of 75 % fine basalt and 25 % bentonite [24]. 

VSubramanian and H.K.Santhi, Sonic Methods in Testing Synthetic Fibres, The Indian Text. ., Oct (1982) 232. 

ASTM D1992 is a standard guide for testing synthetic plasticizers. 

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