PREPARATION OF THE PARAFFIN.
Some operators have said a good deal about the paraffin and the proper place to secure it. As nearly as can be learned the compounds used in this country are products of the Standard Oil Company. The paraffin used in the formulae of this book has an average melting point of 130.
For reducing the melting point of the paraffin mix the paraffin with the white vaseline of the Chesborough company. If an agent is sold in a tin stamped white vaseline it should have the name on the tin of the Chesborough company as this is the only firm having the right to use this name. Petrolatum albi or white petrolatum is a few cents cheaper than the vaseline but the difference is of so small an amount that it is better to use the vaseline
rather than packages which may vary more than the Chesborough product.
FORMULA NUMBER ONE.
White vaseline, one-half pound.
Paraffin, one-half pound.
Melt together.
This should be sterilized by having the mixture stand in a covered container in a vessel of water which is also covered and the water should be kept boiling for a half hour.