accumet Gel-Filled Pencil-Thin pH Combination Electrodes - Mercury-Free, For easy measurement of small samples in long and narrow vessels, Each

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For easy measurement of small samples in long and narrow vessels.Rugged and versatileExtra long and thin: body measures 7 in. long (178mm); only 0.25 in. (6mm) in diameterRugged polymer construction for handheld useFilled with gelled 4M KCl saturated with AgCl electrolyte; never needs refillingEndcap seal keeps membrane moist and readyPorous ceramic single junctionFast and accurateAccuracy, ±0.05pH at 25°C (77°F) Efficiency, >95% Sodium Ion error, <±0.05pH at 25°C (77°F) Response time, 30 secondsAqueous samples in the classroom or in the fieldAnywhere rough handling and breakage are problems, and maintenance is difficultSmall samples in long, narrow vessel