Myron L Instruments

Digital Handheld


Digital Handheld / Portable Instruments

Since 1957, the Myron L Company has designed and manufactured highly reliable analytical instruments for a wide variety of applications. Thousands of professionals around the world rely every day on the performance of our instruments. Demanding uses range from boiler water testing to ultrapure water control to medical instruments for artificial kidney machines.

We are proud of the trust our handheld instruments and monitor/controllers have earned in the past. Our product line has evolved to a new level of outstanding performance and value in analytical instruments: the Ultrameter II series. While priced like affordable single-parameter instruments, the Ultrameter II does the job of three, four or even six instruments.

Accuracy You Can Trust

Both Ultrameter II models deliver performance of 1% of reading (not merely full scale). This high level of accuracy has been achieved through advanced four-electrode conductivity cell technology, a unique pH/ORP sensor and powerful microprocessor-based circuitry. With displayed values of up to 9999, the full four-digit LCD ensures resolution levels never before possible in such affordable instruments. Factory calibrated with NIST traceable solutions, each Ultrameter II may be supplied with both certification of traceability and NIST traceable solutions for definitive calibration.

Innovative Engineering

The Ultrameter II is a prime example of how high-tech engineering can greatly simplify and streamline a task.
Whether in the lab, industrial plant, or in a remote field location, merely:

1. Fill the cell cup
2. Push a parameter key
3. Take the reading

Imagine temperature compensation and range selection are both rapid and automatic. The Ultrameter II is a true one-hand operation instrument.

Easy to Calibrate

All calibrations are quickly accomplished by pressing the â–2 or â–Ľ keys to agree with our NIST traceable standard solution. When calibration is necessary, display prompts simplify pH calibration and make sure the correct buffer is being used. Plus, all parameters (excluding factory-set temperature) have an internal electronic setting which can be used for field calibration and as a check on pH/ORP sensor life.

Advanced Features

- Fully automatic temperature compensation

- User adjustable temperature compensation (up to 9.99%/ C) which also allows TC to be disabled for those applications requiring non-compensated readings.

- User adjustable conductivity/TDS conversion ratio for greater accuracy when measuring solutions not contained in the microprocessor.

- Auto-shutoff maximizes the life of the single 9V battery to more than 100 hours/5000 tests.

- Non-volatile microprocessor provides data back-up, even when the battery is changed. This assures all calibrations and memory data will be retained.

- Extended life pH/ORP sensor is user replaceable in the field.

- Free Chlorine Equivalent reports Free Available Chlorine quickly and accurately by measuring ORP, the chemical characteristic of chlorine that directly reflects its effectivity, cross referenced with pH. Both DPD kits and colorimeters may tell the user the FAC value in the test tube, but since the chemistry of the water is quite different that the sample being analyzed, the results are imprecisely related to actual disinfecting power. The Myron L FCE function measures the real, unaltered chemistry of the source water including moment to moment changes in the chemistry.

High Performance at a Low Cost

Beyond their affordable purchase price, Ultra-Fast, Ultra-Easy, Ultra-Powerful Ultrameter II's save both time and money. Measure for measure, Ultrameter II's give you a better return on your investment than any other hand-held instrument. To see for yourself, contact your distributor or the Myron L Company today.

Multiple Applications

- Irrigation Water
- Hydroponics
- Laboratories
- Homeland Security
- Reverse Osmosis
- Deionization
- Wastewater
- Cooling Towers
- Environmental
- Desalination
- Fountain Solutions


uDock™ Accessory Package includes uDock™, USB cable and Macintosh/PC application software for downloading data.
model: U2CIP

Certificates confirming the NIST traceability of an Ultrameter II are available (must be specified when placing instrument order).
model: MC

Conductivity Standard Solutions are necessary to maintain accuracy and for periodic calibration of conductivity/TDS parameters. All Standard Solutions are NIST traceable for your complete confidence. recommended values: KCl- 7000 (7 mS), 442-3000 (TDS), or NaCl-14.0 (mS) available in 2 oz/59 ml, 1 qt/1 L, and
1 gal/3,8 L.

pH Buffers are necessary to maintain accuracy and for periodic calibration of pH and ORP parameters. Calibration with pH 7 Buffer is especially important. All pH 4, 7, and 10 Buffers are NIST traceable and are available in 2 oz/59 ml, 1 qt/1 L, and 1 gal/3,8 L.

pH Sensor Storage Solution Available in 2 oz/59 ml, 1 qt/1 L, and 1 gal/3,8 L. model: SS20Z, SSQ and SSG

Certificate of NIST traceability for pH Buffer or Conductivity Standard Solutions are available (must be specified when placing solution order). model: SC

Hard protective case (small)
model: UPP

Hard protective case (kit) with three buffers (pH 4, 7, and 10), one pH/ORP storage solution, and two standard solutions, (KCI-7000 and 442-3000). All bottles are 2 oz/59 ml.
model: PKU

Soft protective case is constructed of padded Nylon and features a belt clip for hands-free mobility.
model: UCC (Blue)
UCCDT (Desert Tan)

Replacement pH/ORP sensor user-replaceable, features a unique/porous liquid-junction.
model: RPR

Downloadable Files

Myron L FCE Free Chlorine Measurement with Handheld InstrumentsMyron L FCE Free Chlorine Measurement with Handheld Instruments
ORP and Free ChlorineORP and Free Chlorine

TECHPRO Conductivity/TDS, pH and Temperature Meter

Myron L Techpro 2

Every industrial, commercial or natural water source contains dissolved solids or salts. These impurities contribute to the scaling and corrosion of equipment, affect industrial and commercial processes and contribute to poor taste and other deficiencies in drinking water.

Measurements you can count on.

Obtain reliable and accurate measurements of your water source with the value-priced TechPro Series instruments. Ideal for water treatment testing as well as other industrial and commercial testing and applications. These instruments reflect Myron L's experience designing and building quality conductivity and pH measuring instrumentation since the early 1960's.

All three models are designed with internal electrodes to prevent breakage and prolong the electrodes useful life. The rugged and water resistant case protects the electronics of the instrument and fits comfortably in your hand. All TechPro models feature auto shut-off to prolong battery life.

- Boilers & Cooling Towers
- Reverse Osmosis
- Fountain Solutions
- Swimming Pools & Spas
- Plating and Parts Washing
- Pulp and Paper
- Water/Wastewater Treatment
- Aquaculture
- Agriculture
- Process Control
- Food & Beverage
- Plus many more!

- IP67/ NEMA 6 Waterproof & Buoyant
- User-replaceable, Long-Life
- Internal pH Sensor
- Auto Temperature
- Compensation to 25°C / 77°F
- Keypad Calibration
- 0 - 20,000 ÎĽS / ppm
- Long Life Internal Electrodes
- Full 4 Digit Display
- Memory storage (20 readings)
- User-Friendly
- Portable & easy to use

The TechPro II is handheld, lightweight and simple to operate. Measuring conductivity, TDS, pH and temperature, the highly stable circuitry delivers the accurate readings needed to assure product quality, prevent equipment damage or verify inline instrumentation in a wide range of applications. The TPH1 and TH1 are designed with an internal pH sensor to prevent breakage and prolong the sensor’s useful life. The rugged, waterproof case on all three models protects the electronics of the instrument and fits comfortably in your hand. TechPro II also features auto shut-off to prolong battery life.

Industrial and commercial users all over the world rely on Myron L’s proven quality instruments for their water measurement needs.


Porta-Kit: (Above) This hard protective carry case is a rugged all plastic foam-lined case that includes 2 oz. each pH 4, 7, & 10 Buffers, pH Sensor Storage Solution, and 442-3000 and KCl-7000. Model: PKU

Hard Protective Case: Small protective carry case. Model: UPP

Soft Protective Case: Constructed of padded nylon and features a belt clip for hands-free mobility. Models: UCC (Blue), UCCDT (Desert Tan)

NIST Standard Solutions & 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, 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 Conductivity Standard Solution and pH Buffers will help maintain the accuracy of your instrument.

Replacement pH Sensor: Non-refillable KCI gel-filled combination pH sensor featuring a chemical resistant, porous liquid junction. Model: RPG

NIST Certification: Certificates are available that confirm NIST traceability. Instrument Certificate: (Order #MC-TP1/MC-TPH1/MC-TH1) Standard Solution/pH Buffer Certificate: (Order #SC-XX)

Note: Both MC instrument certificates and/or SC solution certificates must be specified when placing instrument/solution orders.

Downloadable Files

Myron L FCE Free Chlorine Measurement with Handheld InstrumentsMyron L FCE Free Chlorine Measurement with Handheld Instruments
TechPro  II  Data Sheet (TH1)TechPro II Data Sheet (TH1)
TechPro  II  Data Sheet (TP1,  TPH1)TechPro II Data Sheet (TP1, TPH1)
TechPro  II ManualTechPro II Manual