Manual
DESCRIPTION
This manual describes your Myron L EP series meter, 
tells you how to use it, and how to keep it working 
accurately for many years.
Myron L EP & EP10 Meters are compact, multi-range 
instruments which operate on the principle of electrical 
conductivity. They each contain a built-in cell cup and will 
quickly determine the conductivity of almost any solution. 
Both have dials calibrated in micromhos (µmhos) 
equivalent to the metric microsiemens (µS). Model EP 
features a second dial scale calibrated in 
megohms/resistivity for testing ultrapure water.
Both are 3.4” x 4.5” x 4.0” (86 x 114 x 102mm) and 
weigh less than one pound (0.45 kg). EP series meters are 
completely self-contained. The built-in cell is automatically 
temperature compensated. They are powered by one 9 
volt battery good for at least 2000 tests, or one year shelf 
life.
MODEL RANGES
EP  0-0.5, 0-5, 0-50, 0-500, 0-5,000 micromhos (µmhos)
    2-30 Megohms
EP10  0-10, 0-100, 0-1,000, 0-10,000 micromhos (µmhos)
ACCURACY: (Both Models) ±2% of full scale
REPEATABILITY: (Both Models) ±1%
TEMPERATURE COMPENSATION TO 25ºC:
  EP    32-120ºF (0-49ºC)
  EP10   50-160ºF (10-71ºC)
By using an RE-10 Range Extender (see 
ACCESSORIES), the maximum range of each meter may 
be increased ten times.
The pictures in this manual show the major operating 
parts of your Myron L EP series meter. Handle your meter 
and identify these parts to become familiar with it.
Battery
Indicator
Range Switch
Cell Cup
Button
Upper Electrode
Meter Zero
Adjust
Pointer
Model EP10 shown
4&5 RANGE CONDUCTIVITY METERS
OPERATING INSTRUCTIONS
User’s Manual for Models EP 
 EP-10




