>95% pure by SDS-PAGE

Contents when reconstituted in 250µl sterile distilled water will contain: Toxoid B at a concentration of 0.2mg/ml in 0.05M Hepes, 0.15M NaCl and 5% sucrose

Inactivated using formaldehyde. No cell rounding in the sensitive verocytotoxicity assay at 2µg/ml compared to active toxin lethal dose of 4pg/ml

Reconstituted liquid can be frozen at -80°C to extend stability to 1 year; however every freeze/thaw cycle will cause increased aggregation. Avoid multiple freeze/thaw cycles and multiple temperature fluctuations

Lyophilised vial: 1 year after date of receipt 

Reconstituted liquid: 1 month

Swirl or pipette gently to mix. Vortexing promotes aggregation

Lyophilised vial: +4°C 

Reconstituted liquid: +4°C