• Monitor & control the most important parameters
• Easy-to-use
• No need to calibrate probes or change membranes

The Hanna C203 Multi Test Centre comes with the reagents for Ammonia, Nitrite, Nitrate, Ph, and Dissolved Oxygen, making it the best value on the market today.

Made with ease of use in mind, there is no need to calibrate as the test procedure does this for you.

Simply fill the test tube with pond water, insert the meter and press the "zero" button.  This will calibrate the pond water sample to the meter as a reference, add the reagent to the same test tube, insert back into the meter, press the read timer button, this starts a timer count down, then the meter shows the result on the digital display. That's it! It doesn't get any easier.

• Ammonia in Ponds
• Nitrate in Ponds
• Nitrite in Ponds
• pH in Ponds

• Simple to use
• Supplied with starter kit
• Special light source for years of trouble free operation

Ammonia is often an excellent indication of the presence of animal or plant microbiological decay. It is tested in fish farms (fresh and salt water tanks) due to the damaging effects of its toxic nature. Its presence in rivers and reservoirs normally points to agricultural and/or civil pollutants.

• Ammonia in Ponds
• Filter Start
• Pond Nuggets Instant Bacteria

A highly accurate meter. Range –50 to +150 C, resolution 0.1 Immersion time only 20 seconds for a truly accurate reading. Self calibration test feature.

Batteries & instructions included. Rated for food, water, & soil use. 5” stainless steel probe (not floating)

• Elecro Heaters
• Heat Exchangers
• Profi Heaters
• Water temperature and feeding

• Quick and reliable results
• Cadmium reduction method for measuring nitrates
• 300 tests with only one battery

Nitrates are present in nature as a result of the decomposition of organic microorganisms or due to their use as fertilizers. Nitrates reduce to nitrites, which in turn easily combine to form substances dangerous to man.

A maximum level of 45 mg/L is established as a worldwide guideline for nitrate concentration in water. In Europe, the maximum consented level of nitrates in potable water is 50.0 mg/L, while in the USA the EPA has established a guideline for the maximum level of nitrate nitrogen of 10 mg/L (NO_-3-N), which corresponds to 45.0 mg/L of nitrates

• Nitrate in Ponds

• Simple operation
• Rugged housing for field use
• Long battery life

Nitrites are an intermediate product in the nitrogen cycle and are produced during ammonia oxidation with water, or even originate in industrial waste directly. They must not be present in drinking water.

Nitrites can be harmful to aquatic organisms even in low concentrations and for this reason, they are closely monitored in aquaculture facilities. In cooling towers, however, an adequate amount of nitrites is necessary to prevent corrosion. In high concentrations, they can be harmful to environment and to our fish.

• Nitrite in Ponds

• High accuracy with 0.01 pH resolution
• Usable with virtually any pH electrode
• Battery life: 3000 hours of continuous use

At the cost of just a few rolls of litmus paper, you can have the industry's best pocket-sized pH tester. The Checker^® supplies you with fast and accurate readings from 0 to 14 pH with a resolution of 0.01 pH. This compact tester features a large easy-to-read LCD and simple to perform 2-point calibration. The pH electrode of the Checker^® can be replaced. You only need to unscrew the electrode from the meter body and screw on a new one. The Checker^® is fast, accurate, lightweight and with 3000 hours of battery life, you don't have to worry about frequent battery replacement. Testing pH has never been easier!

• Compact and simple to use
• Supplied with conversion chart
• Long battery life

The SALINTEST can help you monitor the concentration of sodium chloride, assuring high quality in aquaculture. SALINTEST is also ideal for marine fish tanks and aquariums. Instruments for measuring salinity of seawater currently available on the market are cumbersome and difficult to use. HANNA instruments^® has re-engineered this compact salt tester with a more durable, ergonomic casing and a larger LCD.

• Salinity in Ponds

• Quick and accurate TDS readings
• Pocket-sized and waterproof
• Graphite sensor for enhanced repeatability

The TDS testers are reliable, pocket sized instruments that will give you quick and accurate readings of conductivity and TDS. This popular line of Dissolved Solids Testers has been redesigned to offer a host of improvements. The casing has been designed for increased strength, a better fit for holding and a large LCD for easy viewing. The graphite sensors provide better repeatability since they do not oxidize. The casing has been engineered to allow air bubbles to escape.