Measure specific gravity using a scale and measuring cup

Wednesday 25th March 2015

The specific gravity of a suspension is simply its weight compared to water (water weighs 1g per cc). For example, different glazes optimize to different specific gravities (e.g. 1.45 is typical for stoneware glazes). Casting slips typically have specific gravities of 1.75-1.8. This plastic measuring cup accommodates 500g. I have already counter-weighed it on our 0.1g scale and filled it with 500 grams of water to verify the accuracy of the 500g marking (mark the correct level with a felt pen or sticker if needed). Now, I am filling the cup with the slurry to the same level. The specific gravity is this weight divided by 500.

Pages that reference this post in the Digitalfire Reference Library:

GLAZ Glaze Observations, Understanding the Deflocculation Process in Slip Casting, Carefully measure specific gravity using a scale and graduated cylinder, Quickly measure specific gravity using a scale and graduated cylinder, Specific gravity, Thixotropy, Deflocculation

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