Hardness
HI-735-25 Reagents for HI-735 Total Hardness Low Range Checker HC
HI-735 Total Hardness Low Range Checker Handheld Colorimeter
HI-83399 Water and wastewater multi-parameter with COD photometer & pH meter
HI-3812 Hardness (Total) test kit
HI-802 Iris Visible Spectrophotometer with Barcode Reader
HI-97745C Multiparameter Photometer Kit - Free and Total Chlorine, Total Hardness, Iron and pH
HI-97735-11 Total Hardness CAL Check standard kit for HI-977 series photometers
HI-97719-11 CAL Check™ standards for Magnesium Hardness, 0.0 and 1.00 ppm
HI-97720 Calcium hardness photometer: Range 0.00 to 2.70 mg/L (ppm)
HI-97719 Magnesium hardness photometer: Range 0.00 to 2.00 mg/L
HI-97736 Total hardness and pH portable photometer
HI-97745 Free and Total Chlorine, Hardness, Iron Low Res, pH portable photometer
HI-97735C Total Hardness Portable photometer Kit
HI-97735 Total Hardness Portable Photometer
HI-93735-0 Total Hardness Colorimetric Reagents, 100 tests
HI-720-11 Calibration Check Set for the HI-720 Calcium Hardness Checker HC
HI-719-11 Calibration Check Set for the HI-719 Magnesium Hardness Checker HC
HI-720-25 Reagents for Calcium Hardness Colorimeter Checker HC
HI-719-25 Reagents for the HI-719 Magnesium Hardness Checker HC
HI-83300-02 Multi-parameter Benchtop Photometer & pH meter
HI-720 Calcium Hardness Handheld Colorimeter - Checker HC
HI-93735-00 Total Hardness Low Range Colorimetric Reagents, 100 tests
HI-3842 Hardness, High Range Test Kit
HI-3841 Hardness - Range (40-500 mg/L) Test Kit
HI-3840 Hardness test kits
HI-3823 Combination test kit for Aquaculture
HI-3814 Environmental Monitoring test kit
HI-38033 Hardness (as CaCO3), total - Range (0-30 gpg)
HI-96735-11 CalCheck standards for Hardness LR/MR/HR, 0.0 and 150/350/520 pp
HI-93735-02 Total Hardness High Range Colorimetric Reagents (100 tests)
HI-93735-01 Total Hardness Medium Range Colorimetric Reagents, 100 tests
About Hanna Instruments
As a world-leading developer in pH and titration science, we help professionals and amateurs with their daily testing needs across a wide range of applications. We provide easy-to-use, well-adapted instruments at great prices and fast support.
Our philosophy of being as close to our customers as possible has resulted in dedicated sales and technical support offices in over 40 countries. Our desire to be an innovator has created many world firsts in test instrumentation, and we continue to innovate and bring new solutions to the market as a direct response to our customers' needs. You will find Hanna instruments used in almost every conceivable application. From happy amateurs looking after their home aquarium, to food artisans and all the way to national and international brands in all industrial sectors, Hanna is a trusted name with over 3,000 products, all manufactured in our ISO9001 certified European manufacturing facility.