Hanna Testers & Checkers

Accurate and Affordable Alkalinity Measurement

Easier to use and more accurate than chemical test kits
Colorimetric method
Large, easy to read digits
Auto shut-off
The Checker HC easily fits into the palm of your hand or pocket
Use for quick and accurate on the spot analysis
Single button operation: Zero and Measure
Operated by a single AAA battery

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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.

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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 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.)

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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

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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

Hanna HI758 Marine Calcium Checker

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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.

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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.

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