$66.21

Synthetic Fresh Water, Hard 415 ppm TDS as Fresh Water Ions, 160 - 180 mg/L Hardness as CaCO? - 8664-32

$172.97

Synthetic Fresh Water, Hard 415 ppm TDS as Fresh Water Ions, 160 - 180 mg/L Hardness as CaCO? - 8664-1

$172.97

Synthetic Fresh Water, Moderately Hard 207 ppm TDS as Fresh Water Ions, 80 - 100 mg/L Hardness as CaCO? - 8663-1

$62.76

Synthetic Fresh Water, Very Soft 25.9 ppm TDS as Fresh Water Ions, 10 - 13 mg/L Hardness as CaCO? - 8661-32

$172.97

Synthetic Fresh Water, Very Soft 25.9 ppm TDS as Fresh Water Ions, 10 - 13 mg/L Hardness as CaCO? - 8661-1

$62.76

Synthetic Fresh Water, Moderately Hard 207 ppm TDS as Fresh Water Ions, 80 - 100 mg/L Hardness as CaCO? - 8663-32

$62.76

Synthetic Fresh Water, Soft 104 ppm TDS as Fresh Water Ions, 40 - 48 mg/L Hardness as CaCO? - 8662-32