$63.51

Conductivity Standard, 20,000 µS/cm (20 mS/cm) at 25°C (11,000 ppm TDS as NaCl) - 2247-32

$63.02

Conductivity Standard, 500 µS/cm at 25°C (240 ppm TDS as NaCl) - 2241-32

$63.93

Conductivity Standard, 150 µS/cm at 25°C (71 ppm TDS as NaCl) - 2236.25-32

$92.67

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

$63.93

Conductivity Standard, 3000 µS/cm at 25°C (1534 ppm TDS as NaCl) - 2244.50-32

$64.42

Conductivity Standard, 70,000 µS/cm (70 mS/cm) at 25°C (44,000 ppm TDS as NaCl) - 2248.70-32

$589.29

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-5