Water is a chemical compound with the chemical formula H2O. A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at standard ambient temperature and pressure, but it often co-exists on Earth with its solid state, ice, and gaseous state (water vapor or steam). Water also exists in a liquid crystal state near hydrophilic surfaces.
* Range : Auto range, two ranges, 0.00 to 50.00 NTU, 50 to 1,000 NTU. * Resolution : 0.01 NTU/1 NTU. * Accuracy : 5 % F.S. or 0.5 NTU, which ever is greater. * Light source : LED, 850 nm. * Record Max, Min value. * Power : 1.5 V battery (UM-4/AAA) x 6 PCs. * 0 NTU and 100 NTU Calibration solution are included. * Designed to meet ISO 7027.
DISSOLVED OXYGEN METER Model : DO-5509 * Range : 0 to 20 mg/L. * ATC. Resolution : 0.1 mg/L. * Pocket size, 13 mm LCD. * Size : 131 x 70 x 25 mm.
* -P circuit, LCD with display unit. * Dissolved oxygen range : 0 to 20 mg/L. * Max., Min., Memory recall button. * DO, Oxygen in air, Temp., ATC, Auto Cal., % salt. * Diaphragms & electrolyte included. * Probe head with diaphragm set and electrolyte are included. * Size : 180 x 72 x 32 mm. RS-232.
Description: PH/ORP, DO, CD/TDS METER Model : YK-2005WA * One meter for multi purpose operation : PH/ORP, DO, CD/TDS METER. * pH : 0 to 14.00 pH, ORP : 1999 mV. * Conductivity : 200 uS/2 mS/20 mS/200 mS.
CONDUCTIVITY METER, wide range Model : CD-4306 * Wide ranges conductivity meter * 4 ranges : 200 uS, 2 ms, 20 mS, 200 mS. * 4 rings conductivity probe, high performance. * Data hold. RS-232 interface.
CONDUCTIVITY METER Model : CD-4303 * -P circuit, LCD with display unit. * Max., Min., Memory recall button. * 200uS/2mS/20mS, ATC, Cell adj. * Size : 180 x 72 x 32 mm. * RS-232 output.
Description: SALT METER Model : YK-31SA * Measurement : 0 ot 10.0% salt (% weight). * Large LCD display, 21.5 mm digit height. * Automatic temperature compensation. * Data hold, professional housing case. * Aquariums, Water conditioning laboratory, industry & quality control.
Description: PH/ORP, DO, CD/TDS METER Model : YK-2005WA * One meter for multi purpose operation : PH/ORP, DO, CD/TDS METER. * pH : 0 to 14.00 pH, ORP : 1999 mV. * Conductivity : 200 uS/2 mS/20 mS/200 mS. * Dissolved oxygen : 0 to 20.0 mg/L.

