$98.82

TDS Standard, 20 ppm NaCl - 8668.5-16

$54.55

TDS Standard, 2 ppm NaCl - 8668.4-16

$80.84

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

$41.14

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

$43.25

Conductivity Standard, 10,000 µS/cm (10 mS/cm) at 25°C 5400 ppm TDS as NaCl - 2246-16

$177.68

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

$168.50

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