·KL-03(I) High Accuracy Pen-typ
·KL-061 Pen-type pH Meter
·KL-096 Waterproof Handy pH Met
·KL-081 Champ pH/Temperature Te
·KL-981 High Accuracy Pen-type
·KL-009(III) pH and Temperature
·KL-009(II) High Accuracy Pen-t
·PH981033 PH Tester
·PH-06 Waterproof pH and Temper