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HM Digital Water Testing Instruments
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Shipping and handling charges of $4.99 per order will be added to each order. All orders are shipped via UPS or USPS (our option). Shipping prices are applicable to physical addresses in the 48 contiguous states only. Shipping rates for orders outside the contiguous U.S. may vary and will be charged accordingly.
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TDS EZ
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HM Digital TDS EZ Water Quality Tester
- Ideal for basic water testing of TDS (Total Dissolved Solids) in your drinking water, food, coffee, aquariums and more.
- This meter shuts off automatically after 10 minutes of non use to conserve batteries.
- Includes a TDS chart sticker on the back of the meter that explains TDS values.
- Large and easy to read LCD screen.
- Factory calibrated. Can be recalibrated with a mini-screwdriver.
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Price Per Filter
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TDS-3
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HM Digital TDS-3 Handheld Meter with Carrying Case
- Ideal for residential and commercial use. Includes a carrying case with belt clip.
- This meter shuts off automatically after 10 minutes of non use to conserve batteries.
- Includes a TDS (Total Dissolved Solids) chart sticker on the back of the meter that explains TDS values.
- Large and easy to read LCD screen.
- Built in digital thermometer.
- Factory calibrated. Can be recalibrated with a mini-screwdriver.
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TDS-4
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HM Digital TDS-4 Pocket Size Meter
- Ideal for residential and commercial use.
- This meter shuts off automatically after 10 minutes of non-use to conserve batteries.
- Includes a TDS (Total Dissolved Solids) chart sticker on the back of the meter that explains TDS values.
- Large and easy to read LCD screen.
- Smallest and lightest TDS meter on the market.
- Factory calibrated. Can be recalibrated with a mini-screwdriver.
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PH-200
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HM Digital Waterproof pH Meter
- Ideal for residential and commercial use. Has a waterproof housing.
- Auto off, data hold function and low battery indicator.
- Measures pH and Temperature.
- Large and easy to read LCD screen.
- Includes a cap, batteries, lanyard and pH 7.0 buffer.
- Factory calibrated. Can be recalibrated with a mini-screwdriver.
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COM-100
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HM Digital Waterproof EC/TDS/Temp Combo Meter
- Measures electrical conductivity (EC), total dissolved solids (TDS) and temperature.
- Ideal for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, colloidal silver, labs & scientific testing, pools & spas, ecology testing, boilers & cooling towers, water treatment and more.
- Auto off, data hold function and low battery indicator.
- Has a waterproof housing.
- Three different conversion factors: KCl, 442 and NaCl.
- Large and easy to read LCD screen.
- Includes a cap, batteries and lanyard.
- Factory calibrated. Can be digitally re-calibrated using push buttons. No screwdriver required.
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DM-1
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HM Digital In Line Dual TDS Monitor
- Measures the tap water coming in versus the purified water going out of your water filtration system at any time.
- Auto off function to conserve battery power.
- Efficient and accurate with its advanced microprocessor technology.
- Installs quick and easily.
- Equipped with quick connect T-fittings.
- Factory calibrated. Can be re-calibrated using a mini-screwdriver.
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Price Per Filter
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DM-2
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HM Digital Commercial In Line Dual TDS Monitor
- Measures the tap water coming in versus the purified water going out of your water filtration system at any time.
- Designed for commercial and industrial applications. Can be used residentially to determine when to change your whole house filter cartridges and reverse osmosis membranes.
- Auto off function to conserve battery power.
- Efficient and accurate with its advanced microprocessor technology.
- Installs quick and easily.
- Equipped with 1/4" quick connect T-fittings.
- Factory calibrated. Can be recalibrated using a mini-screwdriver.
- Differences from the DM-1: Used in commercial/industrial applications, stronger, water resistant casing. Longer, waterproof shielded cables. Improved extra large LCD display. Calibration can be done individually or simultaneously on each line. Variable mounting bracket.
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pH Buffer
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HM Digital pH Buffer Solution Variety Pack
- Solution comes in a powder form and has an indefinite shelf life.
- Includes 3 packets of 4.0 pH, 6 packets of 7.0 pH and 3 packets of 10.01 pH.
- Preparation directions are included with the pack. Simple to use.
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