BOYU accurate aquarium pen type orp test meter

BOYU accurate aquarium pen type orp test meter
1.high accuracy
2.Long-lasting accurate pen type orp meter

3.fit fresh water &salt water

4.Test Range:??1500mv

5.Size:170mm x37mm x37mm

6.Battery:1.5Vx4

7.Accuracy:??2%FS

8.Ambient Temperature:0??C-50??C

9.Weight:80g