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HI755 Saltwater Alkalinity Checker

Producer: HANNA Instruments

SKU: HANNA-HI755 Category: Hanna experimental measuring equipment

Checker for Measuring Alkalinity in Salt Water

– Concentration measurement alkaline from 0 to 300 ppm (mg/L) CaCO₃

– Specialized in SALTwater fisheries.

– Higher accuracy and faster measurements than test kits

– Simple operation with just 1 button.

– Provide complete set including machine, reagents, batteries.

– Sturdy, convenient plastic container.

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ALKALINE IN SALTWATER AQUARIUMS

Alkalinity is a system's ability to buffer its pH when acid is introduced. In saltwater systems, alkalinity is present in two main forms: carbonate (CO₃^2-) and bicarbonate (HCO₃^–). It is important to test alkalinity in a reef aquarium because it is important for coral calcification and the skeletal formation of many marine organisms. The recommended range for alkalinity in a reef aquarium is 142-215ppm or 8-12 dKH.

There are many solutions and chemicals you can add to your reef tank to increase alkalinity, such as sodium bicarbonate, Kalkwasser (Kalk/limwater), or various commercial mixes. Too much alkalinity can be harmful to the organisms in your aquarium and can even cause alkalinity burn, coral bleaching, or tissue loss. Additionally, high alkalinity levels put your tank at risk for calcium carbonate precipitation (limestone formation). This precipitation can sometimes damage equipment and cause heaters or pumps to malfunction. When alkalinity drops too low, your tank is susceptible to adverse pH fluctuations, depriving alkalinity-dependent organisms of what they need.

Additionally, if using the water in an aquarium, it is recommended that phosphate levels be tested, as well silicate, ammonia, phosphorus, phosphate, nitrate, nitrite, pH and alkalinity.

HANNA SERIES SPECIALIZED FOR SALTWATER FISH TANKS: https://hannavietnam.com/ung-dung/thuy-san-nuoc-man-3

ONE BUTTON

Fast measurement and simple operation with just a single button.

COMPACT SIZE

Measure alkalinity with just 10mL sample and included reagents.

LOW COST – HIGH ACCURACY

Cost savings but higher accuracy than test kits.

SUPPLIED COMPLETE SET

The HI755 is supplied complete with no additional purchase required.

– HI755 meter

– 1 bottle of HI755S reagent for 25 measurements

– 2 sample cuvettes with lids

– Convenient, sturdy plastic container

HOW TO MEASURE SAMPLES WITH CHECKER HI755

SPECIFICATIONS

The scale	0 to 300 ppm (mg/L) CaCO₃
Resolution	1 ppm
Accuracy @25°C/77°F	±5ppm and ±5% measured values
Light source	LED @ 610 nm
Calibration	CHECKER does not have a calibration function.
Method	Color comparison
Environment	0 to 50°C (32 to 122°F); RH max 95% does not condense
The battery	1 1.5V battery
Automatically turns off	after 10 minutes of non-use
Size	81.5mm x 61mm x 37.5mm
Mass	64 gr
Guarantee	06 months (for products with intact tags and warranty card)
Supply includes	– Measuring machine HI755 – 2 cuvette model with lid – Reagents HI755S alkaline for 25 tests – Battery (in the device) - User manual - Warranty – Plastic container.