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Hanna

	1. Hanna Continuous TDS/Temp Monitor by Green Air Products: G Hydroponics-Ph & TDS Testing Hanna Continuous Monitors from Green Air Products (formerly known as the Hanna GroChek Continuous Meters) monitor your nutrient solution 24 hours a day, 7 days a week. These newly redesigned meters now feature a larger display, are waterproof with fully submersible lab grade electrodes, and display the temperature in addition to the pH or TDS. Calibration of these meters is needed less frequently... $120.94 at Kalyx.com View more stores in Health Food
	2. Hanna Gro'Chek Continuous pH/TDS Monitor (HI981404N): G Hydroponics-Ph & TDS Testing The Gro-Chek Combo meters measure both pH and TDS at the same time. They are supplied with professional probes specially designed for the grower. To protect your investment, the user selectable setpoints and the visual alarm signals provide an additional guarantee against abnormal status. The probes are submerged so that they have a real-time readout, without preparation or having to wait.... $213.15 at Kalyx.com View more stores in Health Food
	3. Hanna Handheld Combo Meter (pH, TDS & EC) by Green Air Products: G Hydroponics-Ph & TDS Testing The Hanna Handheld Combo Meter (formerly known as the Hanna GroChek Combo Portable Meter) allows the grower to professionally measure pH, EC (conductivity) and TDS with a single portable meter. The electrode in engineered to resist contamination and therefore lasts longer and is particularly suitable to fertilizer applications. This is a professional meter that will last for years. Uses 1 - 9V... $241.94 at Kalyx.com View more stores in Health Food
	4. Hanna Handheld Waterproof pH & TDS/EC & Temp Tester: G Hydroponics-Ph & TDS Testing These meters are manufactured by Hanna Instruments for Green Air Products, and are the nicest portable pen meters we have ever seen in this price range. The new Waterproof Combo Testers from Genesis Instruments are designed for high accuracy pH, EC/TDS and temperature measurements. No more switching meters to measure the pH and then the EC or TDS of a solution. At startup, the Combo performs a... $208.94 at Kalyx.com View more stores in Health Food
	5. Hanna Handheld Waterproof TDS/EC & Temp Tester: G Hydroponics-Ph & TDS Testing These meters are manufactured by Hanna Instruments for Green Air Products, and are the nicest portable pen meters we have ever seen in this price range. The new waterproof Genesis Instruments conductivity testers have a dual-level LCD that displays EC or TDS and ¦C or ¦F. At startup, it performs a self check then displays the remaining battery level to assure proper working condition. These... $109.94 at Kalyx.com View more stores in Health Food

Hanna