â·ÃÊͺ¶ÒÁÃÒ¤Ò à¤Ã×èͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ pH Meter Water Quality Meter à¤Ã×èͧÇÑ´¤èÒ¾Õ-àͪ à¤ÃÕèͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ à¤Ã×èÍÇÑ´¤ÇÒÁà»ç¹¡Ã´ ´èÒ§ PH meter > à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ¾Õàͪ ÁÔàµÍÃìà¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ ExStik 3-in-1 Chlorine, pH, Temp EX800 à¤Ã×èͧÇÑ´¡Ã´´èÒ§ ¾Õàͪ ÁÔàµÍÃìà¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ EX800 ExStik 3-in-1 Kit Chlorine, pH, Temp EX800 Features: EX800 Kit Complete with ExStik® Chlorine meter, pH electrode, protective sensor cap, 5 packs of 10 reagent tablets (50 tests), 5 plastic sample cups, weighted stand, pH 4, 7 & 10buffer packs, four LR44 button batteries, carrying case, and neckstrap Surface Measurements of Chlorine, pH Using a Flat Surface Electrode 4-in-1 Water Quality Meter measures Chlorine, pH plus Temperature with interchangeable flat surface electrodes (included) Flat surface electrodes work in liquids, semi-solids and solids Memory stores and recalls 15 readings and saves last calibrated value Large 3-1/2 digit (2000 count) Digital display with bargraph (pH bargraph originates at neutral point 7.00pH) Automatic electronic self calibration for Chlorine ; 1, 2 or 3 point buffer calibration for pH Data Hold, Auto shut-off and low battery indication Waterproof design floats in wet environment (IP67) Direct reading of Total Chlorine from low detection limit; Unaffected by sample color or turbidity Simultaneous display of ppm or pH and °C/°F Temperature Smart chip predicts pH electrode performance with "RENEW" indicator when replacement is needed "CAL" indicator alerts user to recalibrate pH electrode Automatic Temperature Compensation EX900 Kit Complete with ExStik® Chlorine meter, gel filled pH electrode, protective sensor cap, 5 packs of 10 reagent tablets (50 tests), 5 plastic sample cups, weighted stand, pH 4, 7 & 10buffer packs, four LR44 button batteries, carrying case, and neckstrap Specifications: pH: 0.00 to 14.00pH Chlorine ppm: 0.01 to 10.00ppm Temperature (pH and Chlronine probes only): 23° to 194°F (-5 to 90°C) Resolution Chlorine/pH/ORP: 0.01ppm/0.01pH/4mV Accuracy Chlorine/pH/ORP: ±10% of rdg. + 1ppm/±0.01pH/±1mV Power: four LR44 button batteries Dimensions: 1.4 x 6.8 x 1.6” (35.6 x 172.7 x 40.6mm) Weight: 3.85oz (110g) 3 in 1 Meter Chlorine Meter EX800kit Extech pH Meter Temperature Water Quality Meter à¤Ã×èͧÇÑ´¡Ã´´èÒ§ à¤Ã×èͧÇÑ´¤ÅÍÃÕ¹ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ à¤Ã×èͧÇÑ´¤èÒ ¾Õàͪ à¤Ã×èͧÇÑ´ËÅÒ¤èÒã¹à¤Ã×èͧà´ÕÂÇ à¤Ã×èͧÇÑ´ÍسËÀÙÁÔ áºº»Ò¡¡Ò http://www.ponpe.com/ph-meter/%E0%B9%80%E0%B8%84%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%A7%E0%B8%B1%E0%B8%94%E0%B8%81%E0%B8%A3%E0%B8%94%E0%B8%94%E0%B9%88%E0%B8%B2%E0%B8%87-%E0%B9%80%E0%B8%84%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%A7%E0%B8%B1%E0%B8%94%E0%B8%84%E0%B8%A5%E0%B8%AD%E0%B8%A3%E0%B8%B5%E0%B8%99-exstik-3-in-1-chlorine,-ph,-temp-ex800-detail.html