Aquarium Alkalinity Checker for Marine Tanks, Handheld dKH Colorimeter with Direct dKH Readings

Make routine alkalinity checks simpler in your marine aquarium using this handheld HI772 colorimeter. It reports the result directly in dKH, removing the uncertainty and inconvenience of matching a test sample to a color chart by eye.

Dedicated solely to saltwater alkalinity, the checker combines one-button operation and a pocket-size body for convenient testing beside the aquarium. Its 0.1 dKH resolution supports clear tracking across a measurement range of 0.0 to 20.0 dKH.

Key Features

• Read alkalinity directly in dKH units, so there is no color chart to interpret during routine saltwater testing.
• Use the simple one-button control to complete alkalinity checks without the multi-step reading process associated with visual test kits.
• Measure across a 0.0 to 20.0 dKH range at 0.1 dKH resolution, making small changes easier to record over time.
• Rely on stated accuracy of ±0.3 dKH ±5% of the reading for more precise results than chemical test kits that depend on visual color matching.
• Carry the compact 64 g checker easily between aquariums or keep it close to your testing supplies; its small body can fit in a pocket.
• Start testing using the included sample cuvettes, alkalinity reagent, syringe and tip, battery, instructions, and quick-start guide.

Specifications

• Brand: Hanna
• Model: HI772
• Application: Marine and saltwater aquarium alkalinity testing
• Measured parameter: Alkalinity
• Range: 0.0 to 20.0 dKH
• Resolution: 0.1 dKH
• Accuracy: ±0.3 dKH ±5% of reading
• Method: Colorimetric method
• Light source: LED at 610 nm
• Light detector: Silicon photocell
• Battery: One 1.5V AAA battery
• Auto-off: After 10 minutes of non-use
• Operating environment: 0 to 50°C (32 to 122°F); maximum 95% RH, non-condensing
• Dimensions: 86.0 × 61.0 × 37.5 mm (3.4 × 2.4 × 1.5 in)
• Weight: 64 g (2.3 oz)

Keep this focused checker close to your marine aquarium for straightforward dKH monitoring. The included testing components and quick-start guide make it practical to add direct alkalinity readings to your regular aquarium-care routine.