$79.03

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

$41.93

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

$40.35

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

$41.41

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

$40.83

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

$41.41

Conductivity Standard, 3900 µS/cm at 25°C (2012 ppm TDS as NaCl) - 2244.39-16

$118.28

Conductivity Standard, 1000 µS/cm at 25°C (495 ppm TDS as NaCl) - 2243-20