Chapter   Topic
Comparing Raw Materials
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The comparison of raw materials is a fundamental need when working with recipes particularly when you may wish to find a substitute material.

There are two displays which can assist you to find and compare materials.

  • the Find / Compare Materials window
  • the Materials Database Table window. More ...

Using the Find / Compare Materials Window

To open the Finf / Compare Materials window

  • click the button on the tool bar or
  • select the Find / Compare Materials ... item on the View Menu or
  • select the Compare Materials ... item on theRaw Materials Menu

This options open the window shown in Fig.1

Fig.1 The Find / Compare Materials window.

Locating the Material to be Compared with Others

In Fig.1 the window is set to view a single material. The purpose of this exercise is to compare an initial material with others. First locate the initial material you wish to compare with others. It may be in the default Local Materials.rmt databases. If it is not you can load another database by clicking the button.

When you have located the material click on its name in the list to display its formula in the first formula column, In our example I have highlighted CornishStone

Displaying a Second Material Alongside the Formula for Cornish Stone

We can now display the formula for other materials alongside that of Cornish Stone. Click on the Show Second Material button. The display changes as shown in Fig.2

Fig.2 Comparing Materials - the formula of a second material is displayed.

If you clicked the Search button at the stage shown in Fig.2 the material list would just have the material Cornish Stone in it as there is no other material with the same oxides as Cornish Stone in the Local Materials database.

There may be another feldspar in the Feldspars A-Z.rmt file. To load that file click the button next to the and open this file.

Fig.3 Confirming that the new database has been created.

Now Matrix displays the full list fo materials in Feldspars A-Z.rmt.

When you click the Search button Matrix will display the materials in Feldspars A-Z.rmt which have the same oxides (it is not concerned with values).

In our example we are left with about 14 feldspars in the list. (Fig.3)

We can now scroll through the list displaying the formula for each material alongside Cornish Stone looking for a reasonable match.

If you click the Match Oxide Value button you can change the list to those materials which have oxides, present in Cornish Stone, at levels + or - the value shown in the Oxide Value Tolerance text box.

This box becomes active when you click the Match Oxide Value button and you can change the tolerance levels.

The result of using this function is shown in Fig.4

Fig.4 The search is narrowed using the Match Oxide Value function

Now the list has norrowed down to just one feldspar Yankee Feldspar containing oxides that Cornish Stone has at levels + or - 0.3 molecular parts.

Note that Yankee Feldspar does not have MgO but this function has identified Yankee Feldspar as a potential replacement for Cornish Stone.

The other parts of a recipe with Cornish Stone would require only minimal adjustments.

Using the Restart button you can try different settings for the Match Oxide Value function.

Using the Find Materials with Selected Oxides Function

You can perform a crude search for materials which simply contain certain specified oxides by clicking the Find Materials with Selected Oxides button. This expands the Find / Compare window as shown in Fig.5

I have clicked the CaO button and then the Search button and Matrix has listed all of the materials in the Local Materials.rmt database that have CaO present in their formulae.

You can click various combinations of oxides but the significance of those oxides in the materials is not taken into account.

Follow these links for more information about:


Raw Materials
Overview | Raw Materials Databases | Materials File Structure | Sources of Raw Material Data | Entering a New Material | Changing an Existing Material's Data | Making a New Raw Materials Database | Find / Compare Materials Window | Database Table Window - Material Lists | Copying Materials Between Databases