Botz PRO 9318 Calcitgelb liquid glaze, pastel yellow, 800 ml

Botz PRO 9318 Calcitgelb – pastel yellow glaze with fine brown specks

Botz PRO 9318 Calcitgelb is a ready-to-use, glossy liquid glaze in pastel yellow. The surface is semi-transparent and shows fine brown specks. You can use it across a wide firing range of 1020 to 1280 °C, so for both earthenware and stoneware. According to Botz, it is suitable for raku. The tub contains 800 ml.

The result depends on the firing temperature. At 1050 °C the glaze looks almost opaque with natural brown dots. At 1150 °C it is finely speckled and more semi-transparent. At 1250 °C the surface becomes glassy and semi-transparent, and the delicate dots run a little more. Because the glaze is semi-transparent, the colour of your clay also affects the result.

Application and firing

Stir the glaze thoroughly before use. If it is too thick, add a little water. Apply it in 2–3 coats and let each coat dry slightly. The glaze must be completely dry before firing.

• 1050 °C: almost opaque, with brown dots, apply 2–3 coats
• 1150 °C: finely speckled, more semi-transparent, apply 2 coats
• 1250 °C: glassy and semi-transparent, apply 2 coats, also on porcelain

Avoiding runs

Calcitgelb runs when applied thickly, especially from 1150 °C. Apply it thinly, particularly towards the bottom of the piece, and leave the foot unglazed so that nothing sticks to the kiln shelf.

For dinnerware

Botz recommends the PRO glazes from approx. 1200 °C for dinnerware. For tableware the clay must be vitrified. Many earthenware clays (1020–1100 °C) are not yet vitrified, so such ceramics should not be used for liquids over long periods. Anyone selling tableware is responsible for its suitability for food contact. According to its catalogue (2024), Botz states that its products are exempt from hazard labelling.

Botz PRO 9318 Calcitgelb product details

• Manufacturer: Botz, PRO series
• Colour: 9318 Calcitgelb, pastel yellow with fine brown specks
• Contents: 800 ml, ready to use
• Finish: glossy, semi-transparent
• Firing range: 1020–1280 °C
• Recommended firings: 1050 °C, 1150 °C, 1250 °C
• Raku suitable
• Tends to run when applied thickly from 1150 °C

You will also need: brush for application, kiln

Do not eat, drink or smoke when using this product. Wash hands thoroughly after handling. Ventilate the firing area well. Children should only glaze under supervision. Keep out of reach of children.