Specific gravity of solid resins

SPECIFIC GRAVITY OF SOLID RESINS

W1 = Empty SG bottle weight

W2 = SG bottle  +  Water weight

W3 = SG bottle  +  10 grams Resin sample weight

W4 = SG bottle  +  10 grams Resin sample  +  Water weight

                                           W3 – W1

Calculation       =  ----------------------------------

                               (W2 – W1) – (W4 – W3)

Example:

W1 = 47.62 gm.

W2 = 147.36 gm.

W3 = 57.66 gm.

W4 = 152.22 gm

                                               57.66 – 47.62

Calculation       =  ---------------------------------------------

                              (147.36 – 47.62) – (152.22 – 57.66)

                                           10.04

                        =  -----------------------------

                                    99.74 – 94.56

                                   10.04

                        =  -----------------

                                     5.18

                        =  1.918

Note: 

This method can be used to find out SG of any high viscous resin or any solid resin