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pH/Conductivity Instrumentation

Accuracy • Reliability • Simplicity

SINGLE RANGE DS METERS

Operation Instructions

User Manual for Models RO-1

RO-1NC

DS-1 2

2450 Impala Drive

Carlsbad, CA 92010-7226 USA

Tel 760-438-2021

Fax 800-869-7668 / 760-931-9189

www.myronl.com

Summary of content (5 pages)

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SINGLE RANGE DS METERS Operation Instructions User Manual for Models RO-1 RO-1NC DS-1 2 2450 Impala Drive Carlsbad, CA 92010-7226 USA Tel 760-438-2021 Fax 800-869-7668 / 760-931-9189 www.myronl.
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DESCRIPTION This manual describes your Myron L RO-1 series DS meter, tells you how to use it, and how to keep it working accurately for many years. Your single range DS Meter is a compact instrument which operates on the principle of electrical conductivity. It will quickly determine the ppm/Total Dissolved Solids of almost any solution by converting the conductivity directly into parts per million (ppm) of Total Dissolved Solids. All DS Meters are 3.4" x 4.5" x 4.
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USING YOUR METER 1. Rinse the cell cup three times with the sample you want to test. (For very hot or very cold samples see TEMPERATURE COMPENSATION below.) NEVER FILL THE CELL BY DIPPING THE METER INTO WATER! 2. Fill the cell with another sample to at least 1/4" (6mm) above the upper electrode. 3. Press the black button. 4. Read the dial value indicated by the pointer to determine parts per million (ppm) Total Dissolved Solids. 5.
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CALIBRATION STANDARD SOLUTIONS: A Standard Solution has a known conductivity and ppm value. Your meter was calibrated at the factory using Myron L Company 442-1000 Standard Solution. You can keep your meter accurate by using this same Standard Solution (see ACCESSORIES). How often you calibrate your meter depends on how much you use it. For once a day use, recalibrate it every three months. CHECKING CALIBRATION 1. Test a sample of Myron L 442-1000 Standard Solution.
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WARRANTY/SERVICE ACCESSORIES STANDARD SOLUTIONS Your RO series meter has been factory calibrated with the appropriate Myron L Standard Solution: 442-1000. The 442 Standard Solutions™ consist of the following salt ratios: 40% sodium sulfate, 40% sodium bicarbonate, and 20% sodium chloride. This salt ratio has conductivity characteristics approximating fresh natural waters and was developed by the Myron L Company over three decades ago.