Wasserhärte (hardness of water)

1
(1488)
WASSER1 HART1A   WASSER1   HART1A
2
(1489)
WASSER3A HART1B   WASSER3A   HART1B
3
(1490)
WASSER3A HART1D   WASSER3A   HART1D
4
(1491)
WASSER1 HART3   WASSER1   HART3
5
(1492)
WASSER4 HART2   WASSER4   HART2