You must test before you use it, at any scale. Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.
PIONEER GEORGIA KAOLIN
Al2O3×2SiO2×2h4O—plastic secondary kaolin—wider particle distribution gives greater plasticity, green strength.
With EPK (Edgar Plastic Kaolin) no longer available, many ceramic recipes need a reliable replacement. Pioneer kaolin fills that role well, offering similar chemistry, firing color, and versatility—making it an easy, often near 1:1 substitute with minimal adjustments.
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