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Applications
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Boilers
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Cooling Towers
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| Deionization |
| Reverse Osmosis |
| Chemical Concentrations |
| Printing Fountain Solutions |
| Plating & Parts Washing |
| Swimming Pools |
| Water Pollution Control |
For Readings
You Can Rely On
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Model EP-11/pH
Our most popular pDS model features four conductivity ranges and a 2-12 pH range
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No water supply is completely pure. Every industrial, commercial or natural source contains dissolved solids or salts. These impurities contribute to scale, corrosion, poor taste, and environmental pollution that endanger animal and plant life.
Myron L Company has two proven ways to measure such impurities. Our DS Meters provide fast, accurate, on-the-spot measurement of total dissolved solids (TDS) or conductivity. pDS Meters test conductivity or TDS, plus pH. Readings from their highly stable circuitry help prevent equipment damage, assure product quality and verify in-line instrumentation in a wide range of applications.
Reliability Built In
Breakage is one of the major causes of sensor failure in a typical pH or conductivity instrument. Myron L instruments provide maximum protection for both the pH and the conductivity electrodes inside the cell cup. The user-replaceable pH electrode features a chemical resistant, liquid junction.
Unique Field Tested Design
Our unique, durable, field tested design has evolved over more than 35 years, making Myron L instruments among the most reliable and popular of their kind in the world.
They're lightweight and compact, yet Myron L's DS and pDS Meters are also tough, with rugged, taut-band meter movements.
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Model 532T1
Our most popular model for many years, this instrument offers three very useful ppm ranges. Like other three range and single range models, it features a unique electronic Internal Standard for easy and fast field calibration and range doubling.
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Model 532T1
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Model EP-10
With its four micromho ranges, this instrument is ideal for most water treatment applications. Its low range will accurately test boiler condensate; with the RE-10 Range Extender, it can check process solutions up to 100,000 micromhos.
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Model EP-10
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Model EP
The most versatile of all DS Meters, this instrument is capable of testing both ultra pure and ocean waters...and everything in between! It has five conductivity ranges for easy readability. The most sensitive range includes resistivity equivalents, making it ideal for DI water systems.
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Model EP
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Accessories
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NIST Standard Solutions and pH Buffers
All Myron L instruments are factory calibrated with standard solutions of known conductivity/TDS value and (when appropriate) with pH buffer values 4, 7, 10. These solutions and buffers are traceable to the U.S. Government's National Institute of Standards and Technology primary solutions. Your instruments will be kept most accurate by periodic recalibration with the appropriate Conductivity Standard Solution and pH Buffers. See table below for recommendations. NOTE: pH 7 buffer is especially important and should be used every 1-2 weeks.
Porta-Kit with EP11/pH
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Range Extender
Model RE-10 increases the conductivity/TDS range 10 times when inserted into the sample-filled cell cup. Not available for Model 512T10.
Porta-Kit
(pDS only). Sturdy foam-lined case with 2 oz. bottles of pH 4, 7 and 10 buffers and conductivity standard solution. (Order Model PK3 for Models M6/pH, T2/pH and T6/pH; Model PK7 for Model EP11/pH)
Porta-Pak Carrying Case
can be used with all DS and pDS Meters. Foam-lined and molded of sturdy ABS plastic. No solutions/buffers included. Model: PTP
Replacement pH Sensor
Model RPY is a unique non-refillable KCI gel-filled combination pH electrode featuring a unique liquid junction. Complete installation instructions included. Model: RPY
NIST Certification
Certificates are available which confirm NIST traceability of an instrument. (Order #MC) or standard solution/pH buffer (Order #SC).
Note: Both MC Meter Certificates and/or SC Solution Certificates must be specified when placing instrument/solution orders.
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Instrument Specifications
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| Ranges |
pH - 2-12 pH (pDS Meters only)
Conductivity 1, 3, 4 or 5 depending on model (see table below) |
| Readout |
2 1/2" taut-band shock resistant meter |
| Units of Measure |
Choice of parts per million (ppm)/TDS or micromhos/(microsiemens µS) conductivity |
Accuracy
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pH - ±0.2 pH units
Conductivity - ±2% full scale |
| Repeatability |
±1% |
| Temperature Compensation |
Automatic (to 25ºC) for conductivity samples between 50° and 160°F
(10-71°C) Except EP which is 32º-120ºF (0-49ºC) |
| Calibration Controls |
Conductivity, pH Zero, and pH Gain |
Electrodes
(built-in) |
pH - KCl gel-filled, field replaceable
Conductivity - Never need replatinizing |
| Cell Cup |
Chip and crack resistant polyethylene |
| Circuitry |
Very stable - requires minimal recalibration |
| Batteries |
One or two 9-volt batteries supplied, good for 2000 tests/1 year |
| Dimensions |
3.4"W x 4.5"D x 4.0"H (85 x 129 x 126 mm) |
| Weight |
One pound (0.45 kg) |
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DS Meters
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| Model |
512T4* |
512M5* |
512T5* |
512T10* |
532M1* |
532T1* |
532T2* |
EP-10 |
EP |
| Ranges |
0-2500 |
0-5000 |
0-5000 |
0-10,000 |
0-50 |
0-50 |
0-25 |
0-10 |
0-0.5 |
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0-500 |
0-500 |
0-250 |
0-100 |
0-5 |
| 0-5000 |
0-5000 |
0-2500 |
0-1000 |
0-50 |
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0-10,000 |
0-500 |
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0-5000 |
| Units Measured |
ppm** |
µM |
ppm |
ppm** |
µM |
ppm |
ppm |
µM |
µM, MW |
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Recommended NIST Standard Solutions
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| Key (see below) |
F |
G or N |
G |
O |
B,D,G |
B,D,G |
A,C,F |
K,M,O |
B,D,G |
* These models feature the Internal Standard for easy field conductivity calibration & range doubling.
** Also available in micromhos/microsiemens
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NIST Standard Solutions
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| Key |
Order #
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Values
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| A |
442-15 |
(15 ppm/23.8 µS) |
| B |
442-30 |
(30 ppm/47 µS) |
| C |
442-150 |
(150 ppm/229 µS) |
| D |
442-300 |
(300 ppm/445 µS) |
| E |
442-1000 |
(1000 ppm/1417 µS) |
| F |
442-1500 |
(1500 ppm/2060 µS) |
| G |
442-3000 |
(3000 ppm/3900 µS) |
| H |
442-15,000 |
(15,000 ppm/16,630 µS) |
| I |
442-30,000 |
(30,000 ppm/30,100 µS) |
| J |
KCl-18 |
(11 ppm/18 µS) |
| K |
KCl-70 |
(45 ppm/70 µS) |
| L |
KCl-180 |
(116 ppm/180 µS) |
| M |
KCl-700 |
(478 ppm/700 µS) |
| N |
KCl-1800 |
(1294 ppm/1800 µS) |
| O |
KCl-7000 |
(5687 ppm/7000 µS) |
| P |
KCl-18,000 |
(16,462 ppm/18,000 µS) |
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pH Buffers
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pH4
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pH7
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pH10
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Storage Solution
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pDS Meters
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| Model |
T6/pH* |
M6/pH |
T2/pH* |
EP11/pH |
| Ranges |
2-12 pH |
2-12 pH |
2-12 pH |
2-12 pH |
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0-5000 ppm |
0-5000 µM |
0-50 ppm |
0-10 µM |
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0-500 ppm |
0-100 µM |
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0-5000 ppm |
0-1000 µM |
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0-10,000 µM |
| Units Measured |
pH, ppm |
pH, µM |
pH, ppm |
pH, µM |
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Recommended NIST Standard Solutions
(All pDS Models Also Use 4, 7, 10 pH Buffers)
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Key (see left)
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G |
G |
B,D,G |
K,M,O |
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