$63.93

Conductivity Standard, 3900 µS/cm at 25°C (2012 ppm TDS as NaCl) - 2244.39-32

$40.35

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-16

$80.84

Conductivity Standard, 10,000 µS/cm (10 mS/cm) at 25°C 5400 ppm TDS as NaCl - 2246-100P

$168.50

Conductivity Standard, 50 µS/cm at 25°C (23.6 ppm TDS as NaCl) - 2236.10-100P

$41.41

Conductivity Standard, 23.8 µS/cm at 25°C (11.2 ppm TDS as NaCl) - 2236.06-16

$41.41

Conductivity Standard, 445 µS/cm at 25°C (213 ppm TDS as NaCl) - 2240.45-16

$79.03

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-100P