Product portfolio

SEMIKI measurement solution

SoC test system Vision Camera System PCB function tester Chip loading machine Repair measuring equipment

Electronic industry measuring machine

Multi-channel data logger Standard AC/DC programmable power supply High voltage meter Insulation resistance tester Ground resistance meter Leakage current meter ESD measuring device Electrical characteristics analysis equipment Production room equipment

Force and mechanical measuring equipment

Force measuring device clamp set Force sensor Force measuring base Torque wrench Force measuring system Decibel Material thickness gauge Vibration meter Gas meter Mechanical force gauge Electronic force gauge Torque measuring machine Speed machine Device for measuring material hardness Power screwdriver

Measuring equipment for mechanical industry

Standard measuring tools Thread check conditioner Profile measuring machine Coating thickness gauge Quality testing machine Magnetic measuring device Altitude measure

Temperature and humidity measuring device

Temperature and humidity meter Substance concentration measuring device Detachable probe thermometer Infrared thermometer, thermal camera Self-recording thermometer

Optical measuring equipment

Industrial cameras Measurement microscope Digital microscope Stereo microscope Beam intensity meter Colorimeter Endoscopy equipment

Lab equipment

Industrial scales Desktop scale Technical scales Analytical balance Industrial floor scales Hanna experimental measuring equipment Clean room equipment Spectroscopy and X-Ray equipment Simulation cabinets, drying cabinets, furnaces

HI772 Seawater Alkalinity Checker

Producer: HANNA Instruments

SKU: HANNA-HI772 Category: Hanna experimental measuring equipment

Checker for Measuring Alkalinity in Seawater

– Quick measurement alkaline in SALTwater fisheries.

– Determine word content 0.0 to 20.0 dKh CaCO₃

– Good price.

– Higher accuracy and faster measurement than measuring kits.

– Simple operation with just 1 button.

– Provide complete set including machine, reagents, batteries.

– Sturdy, convenient plastic container.

ALKALINE IN FISH TANK

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, 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 HI772 is supplied complete with no additional purchase required.

– HI772 meter

– 1 bottle of HI772S reagent for 25 measurements

– 2 sample cuvettes with lids

– Convenient, sturdy plastic container

HOW TO MEASURE SAMPLES WITH CHECKER HI772

SPECIFICATIONS

The scale	0.0 to 20.0 dKH CaCO₃ *1dKH = 17.86 ppm (mg/L) CaCO₃
Resolution	0.1 dKH
Accuracy @25°C/77°F	±0.3 dKH 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 HI772 – 2 cuvette model with lid – 1 bottle reagent HI772S alkaline for 25 tests – Battery (in the device) - User manual - Warranty – Plastic container.