Hanna Instruments

How safe is your

DRINKING WATER?

Potable water is one of the most important resources in the world. It is therefore essential to test for a number of parameters in order to keep the public safe and prevent damage to treatment processes and the environment.

Each person requires at least 20 to 50 litres of clean, safe water a day for drinking, cooking and simply keeping themselves clean.

There are a variety of parameters that are measured at a drinking water plant, which can vary based on whether the source is surface water or groundwater. Electrochemistry parameters: • pH • conductivity • ion-selective electrodes (ISEs) like fluorides and nitrates. Chemical reagent-based parameters: • chlorine • phosphate • iron • fluoride • nitrate • hardness

• manganese. Hanna offers a wide range of testing equipment for water plants. It also stocks the necessary probes, including ISEs, and solutions used for calibration and maintenance.

Measuring turbidity

Turbidity, in its simplest form, is the amount of cloudiness in the water. It is a benchmark water quality parameter across all environments – from municipal drinking water facilities to environmental monitoring. The primary goal of drinking water treatment is to remove and reduce turbidity.

This can vary from a river full of mud and silt, where it would be impossible to see through the water (high turbidity), to spring water that appears to be completely clear (low turbidity).

Turbidity is an optical measurement that indicates the presence of suspended particles. It is measured by shining light through a sample, and quantifying the suspended particle concentration.

The more particles that are in a solution, the higher the turbidity. It is important to note that while turbidity correlates with suspended solids, measuring turbidity is not the same as measuring total suspended solids (TSS). TSS measurements are gravimetric, which quantifies the mass of the solids suspended in a sample, performed by weighing the separated solids. As one of the most common and intuitive qualities of water, turbidity is the first thing we notice about water. Is it cloudy or clear? However, behind the cloudiness lies some important implications. Turbidity can affect everything from how water is disinfected to the quality of our lakes, oceans and streams.

HI98703 Turbidity Meter

Measuring chlorine

Chlorine is a common chemical used by many due to its disinfection, oxidation and bleaching properties. Chlorine is used to disinfect and keep bacteria from growing in swimming pools, drinking water and food processing.

HI97711 – portable photometer

• Advanced portable, waterproof photometer that measures free and total chlorine in water (up to 5 mg/ℓ).

It has an innovative optical system that offers superior performance in

accuracy, repeatability and speed of measurement. • No warm-up time is required before taking measurements. This compact, waterproof meter is extremely userfriendly with a tutorial mode that graphically walks the user through performing a measurement graphically, step by step.

Measuring pH

The words pH stands for ‘potential of hydrogen’, referring to the amount of hydrogen found in a substance (water, in this case). pH is measured on a scale that runs from 0 to 14. A solution with a pH greater than 7 is considered basic, or alkaline. A pH of 7 is considered neutral, meaning there is a balance between acid and alkalinity. The pH level of 7 or less, indicates the solution is acidic.

HI98191

HI98191 – professional portable, waterproof pH/ORP/ISE meter

• This meter is designed for universal applications. • It combines all the features of a benchtop into a portable IP67-rated waterproof enclosure, making it one of the most versatile meters on the market. • Selecting the appropriate sensor will automatically update the ion charge for slope calibration, and can be calibrated up to five points, with the choice of seven standards and five custom standards (choice of units). • This meter allows an extensive choice of measurement units (ppm, ppt, g/ℓ, ppb, µg/ℓ, mg/mℓ, M, mol/ℓ, mmol/ℓ, % w/v, user) and has an expanded measuring range of 1.00 x 10-7 to 9.99 x 1 010. • A backlit, graphic LCD provides an easy-to-read display even in low-lit areas. • A combination of dedicated and soft keys allows for intuitive operation in a choice of languages, while the extended battery life of 200 hours assures long operation. • The log-on-demand feature allows users to store up to 300 sample that can be later transferred to a PC with the HI920015 USB cable and

HI92000 software.

HI98x Series of professional portable meters

The HI98x Series of portable meters offers a rugged solution for obtaining laboratory-grade results in the field.

A wide range of single- and multiparameter measurement models means that you can find a meter to use in any space. This professional, waterproof meter complies with IP67 standards. All logged data can be transferred to a PC with the HI920015 USB cable and HI92000 software. It is designed for universal applications, with the performance and features of a benchtop meter.

HI98191 – measures pH, ORP, ISE, and temperature

• There are 15 different standard ISE sensors pre-programmed in the meter. • It offers five-point calibration with seven standard buffers and five custom buffers. • All the necessary accessories are supplied to perform measurements. • It is able to store up to 300 samples, with 200 hours of battery life.

HI98192 – measures conductivity, TDS, resistivity and salinity

• It offers seven memorised standards and up to a five-point conductivity calibration. • Up to 400 log-on-demand samples or 1 000 lot logging samples can be stored. • It can withstand immersion in water at a depth of 1 m for up to 30 minutes. • All three stages of USP method required for EC measurement of ultrapure water can be performed. • This stainless steel, four-ring EC/TDS probe has an internal temperature sensor and 1.5 m cable.

HI98494 – multiparameter Bluetooth®, portable, waterproof pH/EC/ OPDO meter

• This is a microprocessor-based multisensor probe. • Data logged in the meter can be transferred by Bluetooth® to a smart device with the Hanna Lab App. • It measures up to 12 parameters and monitors up to 12 different water quality parameters (six measured and six calculated). • It is designed to withstand the knocks, drops and spills of real life. • The IP67 body ensures top performance in any environment.

HI801 Iris

HI801 IRIS visible spectrophotometer (benchtop)

The HI801 IRIS visible spectrophotometer offers a compact benchtop design with an advanced optical system, which is used in almost any sized space, while providing accurate and consistent photometric laboratory analysis. • Unlike photometers, IRIS measures all wavelengths of visible light, not just pre-specified wavelengths, for complete method compliance and accuracy. • It features precise wavelength selection between 340 nm to 900 nm. • IRIS is used in industries like professional laboratories, water treatment facilities and wineries. • The device is pre-programmed with more than 80 commonly used chemical analysis methods to help you get started. • Methods are easily updated by connecting to a computer or flash drive. • For added versatility, each method can include up to 10 calibration points, five different wavelengths, and up to five reaction timers. • A user’s preferred methods are easily accessed directly from the home screen to save time.