YIERYI Range:0~1999mg/LmV Digital Handheld ORP Tester ORP Meter ORP-B Water Hydroponics
   
  Specifications:
   
   	- Pen type ORP Tester|ORP Meter|ORP Pen
  	- Range: 0~±1999mg/LmV
  	- Resolution: 1mV
  	- Accuracy : ±5 mV
  	- Batteries :4 x 1.5V alkaline(Included)
  	- Environment: 0 to 50°C,RH 95% max
  	- Calibration :1point
  	- Dimensions :175x41x23mm
  	- Weight :72g
 	   
  Operation:
   	- Remove the protective cap. Do not be alarmed if white crystals appear around the cap.
  	- This is normal with ORP electrodes and they dissolve when rinsed with water.
  	- Turn the meter on sliding the switch on the top.
  	- Immerse into solution up to the max immersion level.
  	- Stir gently and wait until the display stabilizes.
  	- After use, switch off ORP meter,, use the water clean the electrode and replace the protective cap.
  	- Do not use distilled or deionized water for storage purposes.
  	- Large fluctuations in readings could be due to lack of calibration, dry electrode or rundown batteries.
  	- Attention :during 2-3 weeks, put electrodes in 3mol/L KCL solution for 12 hours, to make sure the reading within accuracy.
  
  
  Packing List:
   	- 1 * ORP Meter
  	- 1 * Screw Driver
  	- 1 * Instruction Manual
  
  