$118.28

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

$80.84

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

$120.99

Conductivity Standard, 10,000 µS/cm (10 mS/cm) at 25°C 5400 ppm TDS as NaCl - 2246-20

$40.83

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

$41.41

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

$41.14

Conductivity Standard, 100,000 µS/cm (100 mS/cm) at 25°C 65,750 ppm TDS as NaCl - 2249-16

$41.41

Conductivity Standard, 2000 µS/cm at 25°C (1000 ppm TDS as NaCl) - 2244-16