$62.29

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-32

$63.51

Conductivity Standard, 50,000 µS/cm (50 mS/cm) at 25°C (30,300 ppm TDS as NaCl) - 2248-32

$668.50

Conductivity Standard, 500 µS/cm at 25°C (240 ppm TDS as NaCl) - 2241-5

$63.51

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

$63.93

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

$152.64

Conductivity Standard, 50,000 µS/cm (50 mS/cm) at 25°C (30,300 ppm TDS as NaCl) - 2248-1

$149.74

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-1