$49.22
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$96.94
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$99.95
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$73.33
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Standard Solution of As
100μg/mL, matrix: 1% HNO3
$90.41
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As solution
100µg/ml,5% HNO3
$89.90
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Silicic standaard
1000µg/ml, matrix 0.05 mol/L NaOH
$93.42
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6 Nitrobenzene compounds mix
0.10mg/ml, matrix: methanol
$180.81
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Nitrate solution
0.1005mol/L medium: H2O (water)
$79.86
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NO3--N in Water
1000μg/mL Matrix: Water U=1%
$64.29
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