Budget digital ph meter, very reliable and does what its supposed to! We recommend getting ph buffer 4 & 7 and a ph prob cleaner to ensure constant accurate reading, we recommend checking the meter monthly and recalibrating. You stick the meter in to the ph buffer, e.g (7 ), if the meter reads 9 then you need to adjust the dial at the back with the supplied screwdriver until it reads 7 while in the ph buffer 7, then do the same again with ph buffer 4. your unit should now be calibrated, if it is still a bit jumpy soak over nigh in ph prob cleaner and redo the above steps.
There is no warranty/guarantee on this meter but will last a long time if its looked after properly.
Model: PH-009 (I)
Measurement Range: pH 0.0 to 14.0 pH
Temp: 0.0 to 50oC
Resolution: pH 0.1
Accuracy: ±0.1pH (at 68°F)
Typical EMC Deviation: pH ± 0.2
Battery type/ life: 3x1.5V Batteries with approx. 700 Hour Life.