Dissolved Oxygen Meter HI93732N - Garden Pools & Bridges

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Ion-specific meters provide a quick, precise and economical way of measuring ion concentrations. These lightweight portable meters have none of the problems associated with expensive ion selective electrodes, but instead rely on an advanced microprocessor and diode photocell to measure a single photometric parameter. Inexpensive reagents make the cost per test often less than traditional chemical test kits and considerably more accurate - typically +/-4%. All units feature a large LCD display and a battery life equivalent to at least 300 tests. Supplied with 2 cuvets, caps, 9v battery and instruction manual.

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Palm Camcorder Aquapac - With integral padded handle, adjustable shoulder strap and silica gel this case means you can use your camcorder safely in all conditions, with excellent film quality through the special lens window. Supplied with adjustable shoulder strap and silica gel. Although 100% waterproof and sandproof this case is not designed for underwater use so extreme caution is recommended if you plan to film underwater. 165mm high xx 140mm wide. Max circumference of item 340mm.

Online 5 Map Measurer - An accurate and easy to read electronic map measurer (miles and kilometres) with nine storage locations. You can specify any scale up to 1:1 000 000. Battery included

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