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DS & pDS Meters™

DS & pDS Meters™

TDS/Conductivity and pH Testing Instruments

Product Info

Readings You Can Count On

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 measurements of total dissolved solids (TDS) or conductivity. pDS Meters™ test conductivity or TDS, plus pH. Readings from their highly stable circuitry help assure product quality, prevent equipment damage 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 conductivity electrodes inside the cell cup. The user-replaceable pH electrode features a chemical-resistant, porous liquid junction.

Unique Field-Tested Design

Our unique, durable, field-tested design has evolved over more than 55 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. Put our meters to the test. Even after years of rough field service, they’ll surpass your expectations of accuracy, reliability and simplicity.

Accurate Readings in 3 Easy Steps:

  1. Rinse and fill cell cup
  2. Select Conductivity/TDS range
  3. Push button to indicate reading
Meters

DS Meters™ for Measuring TDS/Conductivity:

Part Number Description
512M4 DS Conductivity Meter: 0-2500 µM/µS
512M5 DS Conductivity Meter: 0-5000 µM/µS
512M10 DS Conductivity Meter: 0-10,000 µM/µS
512T4 DS TDS Meter: 0-2500 ppm
512T5 DS TDS Meter: 0-5000 ppm
512T5D POOLMETER™ DS TDS Meter:

0-5000 ppm/442, 0-5000 ppm/NaCl

512T10 DS TDS Meter: 0-10,000 ppm
532M1 DS Conductivity Meter: 0-50, 500, 5000 µM/µS
532T1 DS TDS Meter: 0-50, 500, 5000 ppm
532T2 DS TDS Meter: 0-25, 250, 2500 ppm
AG-5 AGRI-METER™ DS Conductivity Meter: 0-5 millimhos
D-1 DIALYSATE METER™ DS Conductivity Meter:

11-15 millimhos

D-2 DIALYSATE METER™ DS Conductivity Meter:

0-10 & 0-20 millimhos

EP-10 DS Conductivity Meter: 0-10, 100, 1000, 10,000 µM/µS
EP DS Conductivity/Resistivity Meter: 0-0.5, 5, 50, 500, 5000 µM/µS; 2-30 MΩ
RO-1 RO METER™ DS TDS Meter: 0-1250 ppm (with color band)
RO-1NC RO METER™ DS TDS Meter: 0-1250 ppm (no color band)

pDS Meters™ Measuring pH/Conductivity and TDS:

Part Number Description
AG6/PH AGRI-METER™  pDS pH/Conductivity Meter:

0-5 millimhos; 2-12 pH

EP11/PH pDS pH/Conductivity Meter: 0-10, 100, 1000,

10,000 µM/µS; 2-12 pH

M6/PH pDS pH/Conductivity Meter: 0-5000 µM/µS; 2-12 pH
T6/PH pDS pH/TDS Meter: 0-5000 ppm; 2-12 pH
Specifications

DS/pDS Meters™ Specifications:

Ranges: Conductivity

pH

1, 3, 4 or 5 depending on model2-12 pH (pDS Meters only)

(See meters table)

Readout: 2½ in. taut-band shock resistant meter
Units of Measure* Choice of parts per million (ppm) TDS or micromhos (µM)/microsiemens (µS) conductivity
Accuracy: Conductivity

pH

±2% full scale 

±0.2 pH units

Repeatability ±1%
Temperature
Compensation
Automatic (to 25°C/77ºF) for conductivity samples between 10-71°C/50-160°F
Calibration

Controls

Conductivity 

pH Zero and pH Gain

Electrodes (built-in)  Conductivity: Never need replatinizing pH: KCl gel-filled, field replaceable
Cell Cup Chip and crack resistant polyethylene
Circuitry Very stable; requires minimal recalibration
Power One 9 volt battery supplied; 

Battery Life: >2000 tests/1 year

Dimensions 3.4 W x 4.5 D x 4.0 H in./ 

86 W x 114 D x 102 H mm

Weight 1 lb./0,45 kg

*1 µM (micromho) = 1 µS (microsiemen)

DS Meters™:

Model 512T4* 512M5* 512T5* 512T10* 532M1* 532T1* 532T2* EP-10 EP
Range(s) 0-2500 0-5000 0-5000  0-10,000 0-50

0-500

0-5000

0-50

0-500

0-5000

0-25

0-250

0-2500

0-10

0-100

0-1000

0-10000

0-0.5

0-5

0-50

0-500

0-5000

Units Measured ppm** µM  ppm ppm**  µM ppm  ppm  µM  µM, MΩ
Recommended
NIST Standard
Solution Key
F G G O B,D,G B,D,G A,C,F K,M,O B,D,G

pDS Meters™:

Model T6/PH* M6/PH  T2/PH* EP11/PH
Range(s) 2-12 pH

0-5000 

2-12 pH

0-5000 

2-12 pH

0-50

0-500

0-5000

2-12 pH

0-10

0-100

0-1000

0-10000

Units Measured pH, ppm pH, µM pH, ppm pH, µM
Recommended
NIST Standard
Solution Key
G G B,D,G K,M,O

* These models feature the Internal Standard for easy field conductivity calibration and range doubling.

** Also available in micromhos.

Applications

DS/pDS Meters™ Applications:

  • Boilers & cooling towers
  • Deionization
  • Reverse osmosis
  • Chemical concentrations
  • Printing fountain solutions
  • Swimming pools & spas
  • Water pollution control
  • Wastewater
Accessories

DS & pDS Meters™ Accessories, Replacement items and Solutions:

  • NIST Standard Solutions & pH Buffers: All Myron L instruments are factory calibrated with Standard Solutions of known conductivity/TDS values and (when appropriate) with pH buffer values 4, 7 and 10. These solutions and buffers are traceable to the U.S. Government’s National Institute of Standards and Technology. Periodic recalibration with the appropriate Standard Solutions and pH Buffers will help maintain the accuracy of your instrument. 

Note: pH 7 Buffer is especially important and should be used every 1- 2 weeks.

KEY – ORDER # – VALUES (Specify Quarts, Gallons or 2 oz. bottles*)

A 442-15 (15 ppm/24 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 442-15000 (15,000 ppm/16,630 µS)

I 442-30000 (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-18000 (16,462 ppm/18,000 µS)

pH Buffer Solutions:

PH4 pH 4 (red)*

PH7 pH 7 (yellow)*

PH10 pH 10 (blue)*

SS pH Sensor Storage Solution*

Example: To order 1 qt. of pH 4, order # PH4Q.

*Values available in 2 oz. bottles

  • Range Extender: Increases the conductivity/TDS range by a factor of 10 when inserted into the sample filled cell cup. Not available for model 512T10. Model: RE-10
  • Porta-Kit (pDS only): Hard foam-lined case with 2 oz. bottles of pH Buffers 4, 7 and 10 and conductivity Standard Solution. Model: PK3 for models M6/PH, T2/PH & T6/PH; Model: PK7 for EP11/PH.
  • Replacement pH Sensor: Replacement pH Sensor is a unique non-refillable KCl gel-filled combination pH electrode, featuring a porous liquid junction. Model: RPY
  • NIST Certification: Certificates are available that confirm NIST traceability of an instrument (Order #MC) or Standard Solution/pH Buffer (Order #SC). Note: Both MC Certificates and/or SC Solution Certificates must be specified when placing instrument/solution orders.
Downloads

DS & pDS Meters™ Downloads:

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