Description Specifications Size(approx): 195 x 40mm Measure Range: 0-100%(0-10%) Accuracy: 0.001sg(1%) Salinity Proportion: 1.000-1.070sg Features Used to measure the salinity and specific gravity of the water. Sturdy and light weighted Aluminum body. Superior quality rubber grip. High quality and accurate testing result. Can be easily calibrated with a mini-screw driver. Automatic temperature compensation (ATC) Easy to use, convenient to carry. Package included 1X Refractometer 1X Pipette 1X Mini-screw driver 1X Protective carrying case ---------------------------------------------------------------------------------------------------------------------------------------------------------------- ¢ÍãºàʹÍÃÒ¤ÒËÃ×ÍÊͺ¶ÒÁ¢éÍÁÙÅà¾ÔèÁàµÔÁ 0922530999 , 0848744848ËÃ×Í email ( t_phuttharat@hotmail.com ) ªÓÃФèÒÊÔ¹¤éÒâ´Â¡ÒÃâ͹à§Ô¹ â´Â¨Ð·Ó¡ÒÃÊè§ÊÔ¹¤éÒã¹Çѹ¶Ñ´ä»â´ÂºÃÔ¡Òà EMS áÅШÐÊè§ Tracking NO. ãËé·Ò§ EMS ÃÍÃѺÊÔ¹¤éÒÀÒÂã¹ 2-3 ÇѹËÅѧ¡ÒèѴÊè§ »Å. ¡Ã³ÕäÁèÁÕÊÔ¹¤éÒã¹ÊµçÍ¡ÍÒ¨µéͧãªéàÇÅÒ㹡ÒÃÊÑ觫×éÍ»ÃÐÁÒ³ 10-20 Çѹ·Ó¡Òà ·´ÅͧãªéÊÔ¹¤éÒáÅÐÊÔ¹¤éÒäÁèµÃ§¡ÑºÃÒÂÅÐàÍÕ´äÇé ËÃ×Í äÁè¾Íã¨ã¹µÑÇÊÔ¹¤éÒ àÃÒÂÔ¹´Õ¤×¹à§Ô¹ 100% (ÀÒÂã¹ 7 Çѹ)