All batches of Spirulina are checked for microcystins. The growing conditions for Spirulina are unique as it is cultivated and thrives in very alkaline conditions. Ponds are monitored and analysed every day and carefully controlled to maintain a balanced chemistry. Samples are carefully scrutinised on a daily basis via microscopic testing to assure purity and cleanliness. Water runoff from outside sources cannot enter the raised raceways that cultivate Spirulina. Thus, there is no possibility for agricultural waste such as pesticides and herbicides to contaminate the cultures. Finally, as a precautionary measure, batches are periodically screened for cyanotoxins.