sentence: This assumption is supported by analysed salad samples at retail where Bacillus thuringiensis concentrations of 1.5 × 10 CFU / g were found.It is noted that a validated enumeration method in high ‐ water commodities ( lettuces ) was provided with an LOQ of 1.3 × 10 CFU / g. For an analysis of Bacillus thuringiensis subsp. kurstaki strain PB 54 , a qPCR method with specific primer pairs is available .