$116.00
SE
HANNA HI7009L pH standard solution calibrated value: 9.18pH (25 ℃)
Capacity 500mL, calibrated value (25 ℃) 9.18pH, with unique tamper-proof sealing settings to ensure acidity standard liquid mass and freshness, in an unopened state in line with the storage environment, valid period of up to 5 years.

$116.00
SE
HANNA HI7006L pH standard solution calibrated value: 6.86pH (25 ℃)
Capacity 500mL, calibrated value (25 ℃) 6.86pH, with unique tamper-proof sealing settings to ensure acidity standard liquid mass and freshness, in an unopened state in line with the storage environment, valid period of up to 5 years.

$397.00
SE
HANNA HI3131B Glass fillable composite oxidation reduction ORP electrode
Measurement range: ORP: +/-2000mV; temperature range: -5 to 70 ℃, 23 to 158 ° F, platinum needle temperature transducer, built-in amplifier, applicable range 0.1bar, can be used in conventional laboratories, ORP titration, etc.

If you don't know how to choose "PH Meter", please consult customer service.