Hanna Testers & Checkers

Easier to use and more accurate than chemical test kits

EPA approved DPD method Accuracy ±0.03 ppm (mg/L) ±3% of reading 0.01 ppm (mg/L) resolution (250 points) Large, easy to read digits Auto shut-off.

Learn More

The HI 771 Checker®HC is a simple, accurate, and cost effective way to measure ultra-high ranges of chlorine.  Designed as a more accurate alternative to chemical test kits, the HI 771 provides quick, accurate results in four easy steps.

Learn More

Hanna HI758 Marine Calcium Checker

Learn More

The HI716 Bromine Checker is a simple, accurate, and cost effective way to measure Bromine. Designed as a more accurate alternative to chemical test kits, the HI716 provides quick, accurate results in four easy steps. Learn More

HI 700 Ammonia LR Checker, Low Range for Fresh Water

Perfect for fresh water aquaria and ponds! 

Range: 0.00 – 3.00 ppm NH₃-N

Learn More

The HI 733 Checker®HC is a simple, accurate, and cost effective way to measure high ranges of ammonia in fresh water.  Designed as a more accurate alternative to chemical test kits, the HI 733 provides quick, accurate results in four easy steps. 

1.) Step One - Add 1ml of sample and 9ml of reagent “B” to the included cuvette
2.) Step Two - Insert sample into the Checker and zero it out 
3.) Step Three - Remove sample and add reagent “A”
4.) Step Four – Reinsert sample and click the button to measure your results or…
- Press and hold the button for 3 seconds for a time reaction reading

The HI 733 uses an adaptation of the ASTM Manual of water and Environmental Technology D1426-92, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample.

FEATURES/BENEFITS:
* Small palm-sized design
* Accurate from ±1.0ppm ±5% of reading
* Dedicated to a single parameter
* Uses a single AAA battery
* Auto Power Off after 10 minutes in inactivity
* Built-in timer for timed reaction readings

PRIMARY APPLICATIONS:
* Water Quality
* Education
* Wastewater 
* Environmental

Specifications:

Range		0.0 to 99.9 ppm as NH4+
Resolution		0.1 ppm
Accuracy (@20°C/68°F)		±1.0ppm ±5% of reading
Measurement Method		Colorimetric
Light Source		Photodiode @470 nm
Light Detector		Silicon photocell
Method		Adaptation of the ASTM Manual of water and Environmental Technology D1426-92, Nessler Method. The reaction between ammonia and reagents causes a yellow tint in the sample.
Power Supply		Battery - 1 x 1.5V AAA
Power Auto Off		After 10 min. of inactivity
Environment		0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions		81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight		64 g (2.25 oz.)

Learn More

The HI 715 Checker®HC is a simple, accurate, and cost effective way to measure medium ranges of ammonia in fresh water. Designed as a more accurate alternative to chemical test kits, the HI 715 provides quick, accurate results in four easy steps. Learn More

The HI 775 Checker®HC is a simple, accurate, and cost effective way to measure alkalinity in fresh water.  Designed as a more accurate alternative to chemical test kits, the HI 775 provides quick, accurate results in four easy steps.

Learn More