$41.41

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

$168.50

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

$40.83

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

$41.41

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

$41.41

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

$41.50

Conductivity Standard, 5000 µS/cm at 25°C (2620 ppm TDS as NaCl) - 2245-16

$42.54

Conductivity Standard, 30,100 µS/cm (30.1 mS/cm) at 25°C (17,200 ppm TDS as NaCl) - 2247.30-16