Jesmonite® Retarder – AC730 Compatible

Jesmonite® Retarder is a liquid additive that slows the setting time of Jesmonite® AC730 Micro-concrete. It’s especially helpful when working on large, detailed, or vertical castings that require more time to pour, brush, or smooth before the material begins to harden. This optional product gives you greater control and flexibility while preserving AC730’s strength and surface detail. Key Benefits: Slows the setting time of Jesmonite® AC730 Provides more working time for intricate or large-scale projects Reduces waste and improves finish quality Easy to use — simply add to mixed AC730 Usage Information: Mix Ratio: Maximum addition rate is 2g – 8g per 1kg of AC730 mix Applications: Ideal for large castings, vertical molds, or projects requiring extended working time Mixing Method: Add directly to your AC730 mix after combining base and liquid. Mix thoroughly using a Jesmonite® high-shear mixing blade for best results Storage: Keep sealed when not in use. Store between 5°C – 25°C (41°F – 77°F). Do not freeze Packaging: Our Jesmonite® products are measured and sold by weight — not by how full the bottle appears. We guarantee you’ll receive the exact amount of Jesmonite® product listed. Available Sizes: Small - 400g bottle Large - 850g bottle Need more time for your AC730 projects? Retarder helps you slow things down — without compromising quality or performance.