Testing                                                                                                                                       WAX ABSORPTIVENESS

Wax Absorptiveness

Apparatus

Analytical Balance - sensitive to 0. 01 g.

Oven - capable of maintaining a temperature of 103° ± 2° C through out the interior.

Materials

Blotting Paper - sheets in the size of 210 x 297 mm, conforming to Grade 1 of IS 1396-1960.

Steel Plates - Sheets of cold rolled steel having smooth, clean and plane surfaces, 150 mm wide, 228 mm long and 6. 0 mm thick.

Photographic Tray - 2 50 x 31 0 mm.

Paraffin Wax - melting point 54. 4° to 55°C.

Hot-Plate or Steam - Bath

Representative lest pieces shall be cut from samples 74 mm wide 105 mm long. At least four test pieces shall be tested.

percent by weight =(A - B) x100 / B

where

A = weight of the test specimen after wax absorption, and

B = weight of the test specimen before wax absorption.

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