Hanna Instruments

Hanna Pocket Checker

£85.99 GBP

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Model Nitrite (Low Range) Ammonia (Low Range) KH / Alkalinity

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The Nitrite Pocket Checker, Ammonia Pocket Checker, and KH Pocket Checker from Hanna Instruments are compact, user-friendly digital colourimeters designed for quick and accurate water testing.

The Nitrite Pocket Checker delivers reliable measurements of nitrite, a harmful intermediate in the nitrogen cycle, helping users maintain safe conditions in aquatic environments.

The Ammonia Pocket Checker (designed for freshwater or saltwater) provides a simple method to monitor toxic ammonia levels, which is crucial for aquariums and aquaculture.

The KH / Alkalinity Pocket Checker (Carbonate Hardness) measures alkalinity in dKH (degrees of carbonate hardness), essential for buffering capacity in both freshwater and marine systems. All three devices bridge the gap between basic test kits and professional instrumentation, offering digital precision in a portable, easy-to-use format.

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Sean Lee
⭐⭐⭐⭐⭐
Top guys and lovely fish at a Sensible price! Definitely recommend and will be using again for sure.

Robby Hinds
⭐⭐⭐⭐⭐
Went down to The Koi Hut the other week to pick up a fish I’d bought in their auction. Absolutely over the moon with it. The quality’s unreal, exactly as shown in the pics. Met Jack and Gary while I was there, both really sound lads and easy to talk to. Had a proper chat about all things fish and felt really welcome. Nice setup, great fish, and they even let the dogs in, can’t ask for much more than that. Highly recommend.

Tracy Clark
⭐⭐⭐⭐⭐
What a little gem. This is the nearest koi outlet to me and how lucky I am. Gary and his team are knowledgeable, helpful, friendly and down to earth. I recently visited Koi Water Barn and in comparison The Koi Hut knocks spots off the posh boys koi shop. They both have Showa same breeder, same size, the only difference Koi Hut £200 cheaper. Don’t be fooled by the outside of the shop get down there and you won’t be disappointed.