search  current discussion  categories  glazes - cone 4-7 

glaze test for broken pearl green glaze, cone 5-6.

updated fri 4 feb 05


Alisa Clausen on thu 3 feb 05

Glaze test for Broken Pearl Green Glaze, cone 5-6

Glaze tested on white midrange stoneware fired in electric oxidation to =
1240c. (2264f)

Source: clay Times, Nov/Dec. 2004
Credited to:

Firing ramp:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)=20
80c p/h to 1240c (176f - 2264f)
5 min. soak
cool down max. to 800c (1472f)
Hold 1 hour
Shut off kiln

28 Potash
14 Whiting
14 Dolomite
10 Zinc Oxide
3 Lithium Carb.
4 Bentonite
20 Silica
7 Rutile

Note: All raw materials are measured up or down to the nearest whole =
decimal. =20
Colorants or additives to a 100 gram test batch are measured in percent =
to the 100 gram test batch.

Gloss glaze, a mottled tan ground with white and slightly opalescent =
streaking overall.

Regards from Alisa in Denmark