Pluck test

Plucking Gentle Pull Test Versus Pluck Test... 

Samples for identity testing can be any specimen that contains DNA. Samples obtained from an individual for paternity testing or as a reference sample to be compared with DNA prepared from evidence are usually peripheral blood or buccal mucosa. Samples useful for forensic testing, engraftment assays, and the identification of clinical samples may range from plucked hairs to bone marrow aspirates to paraffin embedded tissue. While subject to degradation over time in the presence of enzymes, acidic or basic conditions, or high temperature, DNA is a remarkably stable molecule that can be recovered and successfully analyzed from solutions, surfaces, and cells. 

Vinyl dispersion resins have typically consisted of inert homopolymer or copolymers of vinyl chloride and vinyl acetate, and although the inertness has been of importance for a multitude of applications, there are occasions when reactive functionality is an aid. An example of such a reactive vinyl resin is Geon 137, a carboxyl modified dispersion resin with a carboxyl content equivalent to 1.79% on a resin weight basis or an acid equivalent weight of about 2500. One adhesive application of considerable interest is in the production of flocked product, notably wall and floor coverings. A 50% replacement of standard copolymer dispersion resin with carboxyl functional resin doubles the force required to pluck fibers loose. Test results of laminating carboxylic vinyl plastisol with nylon fabric have shown a threefold increase in adhesion. Such plastisols also show improved adhesion to glass and polyester fabrics. ... 

---