> 95% pure by SDS-PAG 

Bubbly / glassy residue due to lyophilisation in 5% sucrose to increase product stability

Contents when reconstituted in 250ul sterile distilled water will contain : Toxin A at a concentration of 0.2mg/ml in 0. 05M Hepes , 0.15M Nacl and 5% sucrose

Lyophilised vial: 1 year after date of receipt 

Reconstituted liquid: 1 month

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

Swirl or pipette gently to mix. Vortexing promotes aggregation