The dutch column leaching test NEN7343

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Am Siepen 17, D-44803 Bochum, Germany
Tel.: +49 234 9351136  Fax.: +49 234 9351137
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Last Change: 10. May 2000
This chapter explaines the parts of the dutch leaching test NEN7343, which will be necessary to work with our system TitroCol7343. For detailed information we will point to the original publication:
 
Nederlands Normalisatie-instituut, Kalfjeslaan 2, Postbus 5059, 2600 GB Delft: 
Nederlandse norm NEN 7343 
Leaching characteristics of solid earthy and stony buildings and waste materials. Leaching tests. Determination of the leaching of inorganic components from granular materials with the column test. 
1st edition, February 1995 

1. Applicability and principle of the test


2. Realization of the column test

The flow rate of the pump has to fullfill the following equation: 

q <= a * m0

q: flow rate in L/h, a: 0,025 l/kg*h, m0: dry mass in kg 

The following table show volume of the fractions (dependend of dry mass) and the relation of liquid to solid.
 
Fraction
Fraction volume L
L/S in L/kg 
k1
(0,1 ± 0,01) * m0
0,1 ± 0,01 
k2
(0,1 ± 0,01) * m0
0,2 ± 0,02 
k3
(0,3 ± 0,03) * m0
0,5 ± 0,05 
k4
(0,5 ± 0,05) * m0
1,0 ± 0,1
k5
(1,0 ± 0,1) * m0
2,0 ± 0,2
k6
(3,0 ± 0,3) * m0
5,0 ± 0,5
k7
(5,0 ± 0,5) * m0
10,0 ± 1,0 

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Ingenieurbüro Cornelius Consult
Am Siepen 17, D-44803 Bochum, Germany, Tel.: +49 234 9351136, Fax.: +49 234 9351137
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