$41.93

Conductivity Standard, 50,000 µS/cm (50 mS/cm) at 25°C (30,300 ppm TDS as NaCl) - 2248-16

$42.54

Conductivity Standard, 15,000 µS/cm (15 mS/cm) at 25°C - R2246155-500A

$41.41

Conductivity Standard, 70 µS/cm at 25°C (33.0 ppm TDS as NaCl) - 2236.14-16

$41.74

Conductivity Standard, 70,000 µS/cm (70 mS/cm) at 25°C (44,000 ppm TDS as NaCl) - 2248.70-16

$41.41

Conductivity Standard, 150 µS/cm at 25°C (71 ppm TDS as NaCl) - 2236.25-16

$41.41

Conductivity Standard, 3000 µS/cm at 25°C (1534 ppm TDS as NaCl) - 2244.50-16

$41.14

Conductivity Standard, 20,000 µS/cm (20 mS/cm) at 25°C (11,000 ppm TDS as NaCl) - 2247-16