HI-758 Hanna Marine Calcium Checker

Product details

HI-758 Hanna Marine Calcium Checker is a compact handheld colorimeter for measuring calcium in saltwater and reef aquarium water. It gives a digital calcium result in ppm within a defined range, so you don’t need to compare the sample color against a printed chart. Practically, it helps you confirm calcium levels during water-change routines and maintenance when you’re using calcium-relevant dosing or reef supplementation. The checker uses an adaptation of the Zincon method to measure the blue color produced by the calcium reagent reaction, using a precisely measured small sample for consistent readings.

Features:

• Digital calcium readings in ppm for marine and reef aquarium water
• Uses an adaptation of the Zincon method to read the blue color from the calcium reaction
• Simple one-button operation with compact, portable design
• Clear resolution of 1 ppm for more repeatable testing
• Includes reagents for 25 tests plus sample-measuring accessories
• Includes sample cuvettes and handling tools to support careful sample preparation
• Automatic shutoff after 10 minutes of non-use
• Requires careful use of calcium-free dilution water and precise sample measurement for reliable results

Specifications:

• Brand: Hanna Instruments
• Model / SKU: HI758
• Measurement range: 200–600 ppm
• Resolution: 1 ppm
• Accuracy at 25°C / 77°F: ±6 ppm ±5% of reading
• Light source: LED at 610 nm
• Light detector: Silicon photocell
• Battery: One 1.5 V AAA
• Dimensions: 3.4 × 2.4 × 1.5 inches
• Listed weight: 64 g / 2.3 oz
• Replacement reagents: HI758-26 (25 tests)