Checker HI784 Ammonia in seawater Mini-photometer HANNA

HI784 Marine Water Ammonia Checker Hanna Instruments

The HI784 is a mini-photometer developed by Hanna Instruments for measuring ammonia in marine water. It is intended for monitoring this parameter in marine aquariums, especially when the bacterial balance is being established or when there is suspicion of imbalance.

Why Measure Ammonia in a Marine Aquarium

High ammonium values indicate disturbed or not yet fully balanced bacterial activity in the filter. Ammonia (NH3) forms from ammonium (NH4) when the pH is above 7 and is the most dangerous form.

Ammonia values of 0.02 mg/L can cause long-term gill damage. Levels above 0.01 mg/L have a negative effect on aquarium organisms. It is essential to measure the pH in addition to the NH4 value.

Calculation of Toxic Ammonia NH3

To determine the amount of NH3 ammonia, multiply the total free ammonia value (NH3/NH4+) displayed by the photometer by the ammonia percentage indicated in the table below, based on pH and temperature.

Example: pH 8.0, temperature 24 °C, NH3/NH4+ 1.00 mg/L

Toxic ammonia concentration: 1.00 mg/L x (5.0 ÷ 100) = 0.05 mg/L

Percentage of Ammonia NH3

Highlights

Fast and reliable measurements

Simple use with a single button

Compact and lightweight design

Results compliant with approved methods

Large display for comfortable reading

Robust design suitable for regular use

Technical Specifications

Product type: ammonia mini-photometer

Parameter measured: ammonia in marine water

Use: marine aquarium and marine biology

Package Contents

Checker HI784 Mini-Photometer Hanna Instruments

Two measurement cuvettes with caps

Reagents for 10 ammonia tests

A plastic filling pipette

A battery