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Table 7

Comparison between DMIA and laser diffraction methods after and before the NN calibration

General valuesDMIA without NN calibration (μm)DMIA with NN calibration (μm)Mastersizer 2000 (μm)
WAS 
Minimum 0.98 0.45 1.44 
10th percentile 1.18 33.23 33.75 
Median 2.48 114.63 117.34 
90th percentile 9.93 228.76 232.32 
Maximum 167.25 417.29 416.86 
RCS 
Minimum 0.98 3.59 1.09 
10th percentile 1.18 10.94 12.82 
Median 2.53 44.50 43.54 
90th percentile 10.24 111.18 112.21 
Maximum 135.17 590.23 630.95 
PTS 
Minimum 0.98 4.72 1.09 
10th percentile 1.18 10.41 10.55 
Median 2.39 32.34 32.54 
90th percentile 8.80 84.45 82.55 
Maximum 86.73 224.37 239.88 
General valuesDMIA without NN calibration (μm)DMIA with NN calibration (μm)Mastersizer 2000 (μm)
WAS 
Minimum 0.98 0.45 1.44 
10th percentile 1.18 33.23 33.75 
Median 2.48 114.63 117.34 
90th percentile 9.93 228.76 232.32 
Maximum 167.25 417.29 416.86 
RCS 
Minimum 0.98 3.59 1.09 
10th percentile 1.18 10.94 12.82 
Median 2.53 44.50 43.54 
90th percentile 10.24 111.18 112.21 
Maximum 135.17 590.23 630.95 
PTS 
Minimum 0.98 4.72 1.09 
10th percentile 1.18 10.41 10.55 
Median 2.39 32.34 32.54 
90th percentile 8.80 84.45 82.55 
Maximum 86.73 224.37 239.88 

WAS, waste activated sludge; RCS, recirculated sludge; PTS, pre-treated sludge.

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