| Digital pH Meter-Aquarium Swimming Pool Water Tester R9 $14.99 |
| Digital pH Meter-Aquarium Swimming Pool Water Tester p3 $14.99 |
| WATERPROOF DIGITAL PH METER TESTER AQUARIUM POOL WATER $29.90 |
| Pen Type pH Meter Tester + Temperature display Aquarium $29.90 |
| pH Meter +Power Adaptor+ Replaceable Electrode 110-220V $39.90 |
| Oakton TDS tester $0.99 |
| PH Temp CF EC TDS PPM 6 in 1 Water Meter Tester 110V $78.99 |
| pHep 5 HANNA WATERPROOF pH - TEMP METER HI 98128 $94.99 |
| Digital pH Meter-Aquarium Swimming Pool Water Tester p3 $14.99 |
| New pH Meter- Aquarium Swimming Pool Water Tester PH 9 $9.99 |
| PH Temp CF EC TDS PPM 6 in 1 Water Meter Tester 220V $78.99 |
| Milwaukee pH600 TESTER METER Aquarium Hydroponics Lab $21.95 |
