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Hanna Checker®HC Nitrate colorimeter, LR (NO3)

79.00
Hanna Checker – Nitrate (NO3) Colorimeter   The HI781 Nitrate Checker HC by Hanna Instruments is a simple and accurate handheld colorimeter that uses

Hanna Waterproof Salinity tester

103.90
Salinity Tester – digital Salinity tester   Our new HI-98319 waterproof salinity and temperature tester is perfect for any saltwater aquarium.  

Hanna Checker®HC Phosphate colorimeter, ULR (PO4) hi774

79.00
Hanna Checker – Phosphate ULR Colorimeter   The Hanna Phosphate checker ULR is an awesome little tool that will give you accurate

Hanna Checker®HC Calcium Colorimeter (Ca)

79.00
Ηλεκτρονικό τεστ ασβεστίου από την Hanna Instruments. Specifications Range 200 to 600 ppm Resolution 1 ppm Accuracy @ 25°C/77°F ±6%