Smithfield, RI, May 2022 – Hanna Instruments is excited to introduce two New Marine Checkers, its Magnesium Checker and Ammonia Checker.

Hanna’s Two New handheld Checkers for marine aquarium and aquaculture applications.

These two new Hanna products are perfect for marine, saltwater aquarium, and aquaculture applications. Small and portable, these Checkers are an easy and convenient testing solution for aquarium hobbyists.

Regularly testing Magnesium and Ammonia levels in reef tanks is critical to ensure a healthy aquatic environment. Both Marine Checkers® are designed with simple test procedures so that users can achieve fast, accurate, and digital results.

“We could not be more excited to welcome these two new products to the saltwater aquarium industry! At Hanna, we are always striving to improve our customers’ testing experience and these Marine Checkers do just that,” says Kevin Costa, Aquarium and Aquaculture Manager for Hanna.

To learn more about Hanna’s Marine Magnesium Checker® (HI783) and Marine Ammonia Checker® (HI784), please visit our website.
Hanna Aquarium Testers

About Hanna Instruments, Inc. (Hanna):
Hanna is the world’s largest privately-held manufacturer of analytical and scientific instruments. Since 1978 Hanna has produced simple, affordable, high-quality devices for laboratory, food, aquarium, agriculture, environmental, industry applications, and more. We offer a wide array of instrumentation from research-grade benchtop meters and ISEs, to single and multiparameter meters for pH, DO, and more. Thousands of consumers and major brands trust Hanna for their testing needs. Hanna operates in 47 countries around the globe, ensuring exceptional levels of customer service and support. For more info, please visit


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