$92.67

Conductivity Standard, 10 µS/cm at 25°C (4.7 ppm TDS as NaCl) - 2236-32

$149.74

Conductivity Standard, 100 µS/cm at 25°C (47.2 ppm TDS as NaCl) - 2237-1

$154.36

Conductivity Standard, 46.7 µS/cm at 25°C (22.0 ppm TDS as NaCl) - 2236.07-1

$267.80

Conductivity Standard, 10 µS/cm at 25°C (4.7 ppm TDS as NaCl) - 2236-2.5

$63.46

Conductivity Standard, 10,000 µS/cm (10 mS/cm) at 25°C 5400 ppm TDS as NaCl - 2246-32

$152.20

Conductivity Standard, 500 µS/cm at 25°C (240 ppm TDS as NaCl) - 2241-1

$154.80

Conductivity Standard, 70,000 µS/cm (70 mS/cm) at 25°C (44,000 ppm TDS as NaCl) - 2248.70-1