Hanna Milestones Hanna is Technology and Innovation For over 40 years, Hanna has been a world leader in innovation of analytical instrumentation. Headed by our team at the home office in Woonsocket, Hanna’s research and development department constantly challenge themselves to invent new testing techniques and to advance existing technology. The minds at Hanna work to achieve the common goal of simplifying analytical testing through improving instrumentation, sensor development, reagents and chemicals. 1978 Hanna Opens in Italy Hanna was founded in Padua, Italy. 1980 World’s first single-probe portable conductivity meter The HI8033 is a four pole conductivity meter designed for soil testing in agriculture. The potentiometric probe allows measurements of different solutions with different conductivity values. The same meter can be used to measure both deionized water and fertilizer solution. 1982 World’s first pH controlled chemical dosing pump The DP7916 combined a pH meter with a chemical dosing pump in order to maintain a desired set point of a process applications. The BL7916 is the second-generation design and is still widely used by many customers including plating, wastewater treatment, water treatment and swimming pools. 1984 World’s first microprocessor-based hand held pH meter The HI8424 was the first portable microprocessor pH meter. The microprocessor allowed for automatic calibration as compared to manual calibration with trimmers or potentiometers. The calibration information was stored in the meter even when it was powered off. 1985 World’s first pH electrode with built-in temperature sensor The HI8414 pH meter was the first meter to use a pH electrode (HI1213S) with a built in temperature sensor. The temperature sensor allowed for the automatic correction for changes in pH with changes in temperature as calculated by the Nernst equation. This advancement is now commonplace in the industry. 1986 World’s first electronic pocket sized pH tester The pHep® or pH electronic paper revolutionized the way pH can be measured. This tester brought the electronic pH measurement to the masses. It allowed farmers, students, and many other users access to a pH meter that was simple to use and very accurate. 1988 World’s first pre-amplified pH electrode Amphel was the first pH electrodes with a built in amplifier. The pH electrode produces a high impedance signal. Due to the low current signal the measurement is susceptible to electrical noise, humidity, and a bad connection. Utilizing an amplifier allowed for signal with a higher current, which overcame the measurement issues. We continue to use amplifiers in many electrodes including some of those with built in temperature sensors. 1990 World’s first waterproof portable pH meter The HI9023 was the first waterproof portable pH meter. A pH measurement is usual for many industrial and environmental applications. In these situations it is common that a pH meter can get wet. If water or chemical solutions get inside the meter then it is possible that the sensitive electronics can be damaged. For this reason Hanna Instruments designed a meter that would be completely waterproof. The HI9023 and successive portables including the HI9024, HI9025 and HI9026 have been the work horse meter for many customers that need a rugged waterproof meter. | www.hannainst.com Introduction viii about Hanna
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