9th January 2025. Good news – Additional purification. No crystallisation. Our HHC purity of total C9 (R and S value) is a consistent 90+ %. With R value 60+ %. Due to additional purification it does not crystallise anymore except at extremely low temperatures, finished extract appearance is a more colourless/yellowish glassy liquid. It tends to darken over time from UV light resulting in an amber like appearance.