| Measurement item | pH, ORP, and temperature |
| Measurement range | pH: 0.0 to: 14.0
ORP: 2000 to 2000 mV Temperature: 0.0 to 100.0 ℃ |
| Memory | 1000 data |
| Size | 130 x 230 x 60mm |
| Power supply | AA size type alkaline battery x 4 pieces (test attachment) or USB or AC adapter(100-240V) |
| Weight | about 0.7kg (Including battery) |
pH meter
Model: HM-41X
Brand: DDK-TOA, Japan