Test:

Oil Adsorption (Spatula) - OLAD

Notes

The oil adsorption of a powders (usually pigments) is defined as the number of grams of linseed oil absorbed by 100 gms of the powder. Thus this test is a measure of the ability of a powder to hold onto oil.

APPARATUS AND REAGENTS :
1. Glass weighing bottle 50 ml.
2. Glass tube
3. Marble Slab or ground glass plate
4. Sharp edged steel spatula
5. Accurate scale
6. Clear raw linseed oil

Procedure:

1. Weigh 15 grams of the test sample (adjust to 25 grams for low absorption materials, to 5 grams or less for high adsorption materials).

2. Fill the weighing bottle with raw linseed oil and insert the glass tube in it and weigh the bottle.

3. Place the weighed test sample on the glass plate or the marble slab.

4. Add the linseed oil from the bottle drop by drop (using the glass tube) and after each addition thoroughly mix the oil and the pigment by rubbing with the spatula.

5. Continue the addition of the oil till exactly enough oil has been incorporated to produce a very stiff paste that does not break or separate. Spread the paste on the marble slab and with the spatula gently roll the paste. It should roll without separation.

6. Reweigh the bottle with linseed oil and the glass tube.

7. Repeat the test and average the result.

Calculation:
A = Wt. or the test sample.
B = Initial wt. of the bottle with linseed oil.
C = Wt. of the bottle with linseed oil after the test.

Oil Adsorption = ((B-C) x 100) / A

Variables

VAL - Value (V)

Out Bound Links

The future of ceramic recipe, material and physical testing record keeping is here.

Watch the video or sign-up at http://insight-live.com.

Maintain your recipe database on-line

Login to a private account or work with others in a group account (e.g. university).
Nothing to install (access it using your web browser). It is always the latest version.
Easy to import your existing data.
As many side-by-side recipes as you want.
Many ways to search and classify glaze and body recipes.
Glaze and body recipes are robust, with units-of-measure, unlimited pictures with individual titles and descriptions.
Add variations to a recipe; each with its own pictures, descriptions and name/code-number extensions.
Recipes can link to typecodes, projects and firing schedules (all managed in their own areas).
Standard reports and mix ticket reports with last-minute-totalling; variations report as if they are a complete recipe.
Video tutorials, help system, contact form on every page, dedicated messaging and support ticket systems.
It is an industrial-strength database system (unlimited capacity, fast, reliable, scalable).

Imports many file formats

Glaze recipe formats supported: HyperGlaze, GlazeGhem, GlazeMaster, Matrix, INSIGHT XML recipes (single and multiple), INSIGHT SQLite DB files.
Assign a batch number to imports, and later search by batch.
Assign multiple typecodes to imported glaze and body batches (to classify) and search on these later.
Prepend character sequences to glaze recipe names during import.
Import the pictures and pair them to their corresponding records automatically.
One click to automatically export the database to an SQLite DB database file and download it (for use with desktop INSIGHT or just as a backup).
Export and import individual glaze recipes as text or XML.

Perfect for Education

Ceramic study programs can now accumulate material, recipe and testing data year-after-year, students can login and together build a valuable ceramic glaze and body knowledge resource.
Students already have internet connected devices, computers are not even needed in the class.
The Reference Manager gives you quick access to the Digitalfire Ceramic Reference Database.

Learn more..

Digitalfire Test Procedure Database