â·ÃÊͺ¶ÒÁÃÒ¤Ò Portable tester of water, food, beverages and other aqueous solutions à¤Ã×èͧÇÑ´¤ÇÒÁ¢Øè¹ TB400 Portable Turbidity Meter Features: Large big-digit LCD and splash-proof front panel Portable design allows you to take measurement on-site instead of bringing solution back to the lab Measures up to 1000 NTU (Nephelometric Turbidity Unit) with 0.01 NTU resolution Microprocessor-based circuitry assures high accuracy and repeatable readings Requires only a 10mL sample size 2-point calibration, Auto Power Off Battery operated for field and on-site testing Data Hold and Min/Max record/recall Complete with 0 and 100 NTU standard solution test bottles, cleaning solution, test bottles with covers, cleaning cloth, six AAA batteries, and hard carrying case Specifications: Range (NTU): 0.00 to 50.00 NTU, 50 to 1000 NTU Resolution: 0.01 NTU Accuracy: ±5% FS or ±0.5 NTU, whichever is greater Light Source: LED, 850nm Standard: designed to meet ISO 7027 Response Time: <10 seconds="" li=""> Dimensions: 6.1 x 3.0 x 2.4" (155 x 76 x 62mm) Weight: 11.3oz (320g) TB400 Turbidity Meter Water Quality Meter à¤Ã×èͧÇÑ´¤ÇÒÁ¢Øè¹ à¤Ã×èͧÇÑ´¤Ø³ÀÒ¾¹éÓ