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             the ross series of electrodes provide readings stable to 0.01 ph in less than 30 seconds, even in the extreme case of samples varying from one another by 50 °c or more. results are three to five times more precise than those obtained with conventional electrodes. and, because drift is less than 0.002 ph per day, restandardization is minimized.  
            recommended use: fits test tubes, measures samples as small as 0.2 ml. for use in clinical, pharmaceutical, and food labs, wherever sample size is a constraint. 
            cap diameter is 16 mm. 
            advantages of the ross ph electrodes line  
            ross? and the coil trade dress are trademarks of thermo fisher scientific. 
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