AMS1

AMS2

Fluorescence count (AMS)

Cells mL−1

Fluorescence count (AMS)

Cells mL−1

Sterile filtered system water (blank)

114 ± 12, n = 3

123 ± 7, n = 3

LLOD

136

1.9 × 104

137

1.2 × 104

LLOQ

173

5.0 × 104

160

3.2 × 104

Regression equation

843X − 96,020

878X − 107,935

Regression, R2

0.9939

0.9940