The Silmark replica is of such high fidelity that it can be used in microscopic comparison examinations. A replica is particularly convenient in comparative examinations between a tool and its impression when, for example, the tool is relatively large. The replica can be compared with the cast made at the actual crime scene instead of a cast made from a comparison mark. Positioning a large tool under the microscope can thus be avoided.
A replica has the added advantage that it can be kept at hand when the tool is returned to its place of origin.
Permadyne is available in two viscosities: high (pink-colored) and low (blue-colored) consistency. When the material must be pourable, as in casting the outsole of an athletic shoe, the low-consistency Permadyne can be used.
A package contains two tubes of base paste (120 ml each), two tubes of catalyst paste (15 ml each) and a mixing pad (18 x 2.5 cm siliconized paper, about 12 sheets).