Ratiometric Turbidity Meter, Infrared (LED) Lamp, Material: Plastic, 2020i version best suited for natural waters, samples of higher turbidity and samples with some color
Transparent Turbidity Tube, simple apparatus is used to determine the transparency of water in lakes, streams, oceans as well as other bodies of water, Contains: 60cm transparent turbidity tube, rubber stopper with Secchi disc, 20cm silicon tube, Hoffman's clip, steel
Ratiometric Turbidity Meter, Infrared (LED) Lamp, Material: Plastic, 2020T version with tungsten bulb is best suited for low level drinking water applications