$64.42

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

$846.01

Conductivity Standard, 150 µS/cm at 25°C (71 ppm TDS as NaCl) - 2236.25-5

$63.93

Conductivity Standard, 70 µS/cm at 25°C (33.0 ppm TDS as NaCl) - 2236.14-32

$267.80

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

$668.50

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

$589.29

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

$428.45

Conductivity Standard, 10 µS/cm at 25°C (4.7 ppm TDS as NaCl) - 2236-5