$41.41

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

$40.83

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

$41.74

Conductivity Standard, 70,000 µS/cm (70 mS/cm) at 25°C (44,000 ppm TDS as NaCl) - 2248.70-16

$41.44

Conductivity Standard, 10 µS/cm at 25°C (4.7 ppm TDS as NaCl) - 2236-16

$41.41

Conductivity Standard, 7000 µS/cm at 25°C (3718 ppm TDS as NaCl) - 2245.70-16

$41.41

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

$79.03

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