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Category

1. pH Testers, Meters (56)
2. TDS, PPM, EC Meters (36)
3. Calibration, Cleaning Solutions (27)

Price

1. $0.00 - $9.99 (7)
2. $10.00 - $17.99 (11)
3. $18.00 - $49.99 (12)
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9. $250.00 - $399.99 (10)
10. $400.00 and above (8)

Brand

1. Autopilot (2)
2. Bluelab (29)
3. Control Wizard Products (1)
4. Future Harvest Development (2)
5. General Hydroponics (5)
6. GreenGro Biologicals (1)
7. Hanna Instruments (25)
8. HM Digital (4)
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10. Myron L (2)
11. Oakton (6)
12. Rapitest (4)
13. SmartBee (3)
14. Sunlight Supply Inc. (2)
15. Zelda Horticulture (2)

Voltage

1. 120-240v (1)