$41.41

Conductivity Standard, 46.7 µS/cm at 25°C (22.0 ppm TDS as NaCl) - 2236.07-16

$40.83

Conductivity Standard, 500 µS/cm at 25°C (240 ppm TDS as NaCl) - 2241-16

$41.93

Conductivity Standard, 50,000 µS/cm (50 mS/cm) at 25°C (30,300 ppm TDS as NaCl) - 2248-16

$41.41

Conductivity Standard, 50 µS/cm at 25°C (23.6 ppm TDS as NaCl) - 2236.10-16

$40.35

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

$41.41

Conductivity Standard, 3000 µS/cm at 25°C (1534 ppm TDS as NaCl) - 2244.50-16

$41.41

Conductivity Standard, 150 µS/cm at 25°C (71 ppm TDS as NaCl) - 2236.25-16