$40.35

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

$80.84

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

$41.41

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

$120.99

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

$118.28

Conductivity Standard, 100 µS/cm at 25°C (47.2 ppm TDS as NaCl) - 2237-20

$41.41

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

$40.83

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