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Summary of Contents for LABSTAC MET21-02
- Page 1 OPERATION MANUAL PH METER MET21-02 labstac.com...
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Page 2: Table Of Contents
INDEX 1. Introduction 1.1 Introduction 1.2 Technical Specification 1.3 Function Introduction 2. Safety Notices 3. Terms Explanation 4. Overview and Installation 4.1 Overview 4.2 Instrument installation 5. Instrument Operation 5.1 Screen Icons 5.2 Key Functions 5.3 Instrument Settings 5.4 Calibration 5.5 Measurement 6. -
Page 3: Introduction
1. Introduction 1.1 Introduction MET21-02 portable pH meter is not only suitable for sampling, measuring the pH value of aqueous solution and measuring electrode potential (mV) value in laboratories of industrial and mining, research institutes, but also especially suitable for pH measurement in field and mobile environment General Features LCD display screen, 3.5 inches.Powered by lithium batteries, no need to replace batteries frequently,... -
Page 4: Function Introduction
Reading Mode continuous-read function PH electrode status/performance display Electrode slope Multi-point calibration Automatic identification of standard solutions 1 group standard solution Manual identification of standard pH/mV measurement solutions Custom standard solution Manual temperature compensation (0.0～60.0)°C Temperature function Temperature unit °C labstac.com... -
Page 5: Safety Notices
100% Theoretical Slope (PTS). pH = - log[H], where [H] means molar concentration (mol/L) of H ions.E0 of pH: Also known as "zero potential", usually refers to the potential value at pH 7.One-point calibration: Calibration with a standard solutionTwo-point calibration: Calibration with two standard solutions. Multi-point calibration: Calibration with more than two standard solutions. labstac.com... -
Page 6: Overview And Installation
4.1 Overview 1 Meter Body 2 Power Key 3 Function selection 4 Display 5 Socket protective cap Figure 4-1.Overview-Front View 6 Power sockets 7 Wristbands 8 Flip Tilting Stand 9 Electrode Holder 10 Electrode Figure 4-2 Overview- Back View labstac.com... -
Page 7: Instrument Installation
4.2.2. Electrode Connection Insert the electrode holder into the T-shaped port corresponding to the meter body;Insert the pH electrode into the electrode holder and hold it firmly;Find the connector, insert the measuring electrode into the corresponding place on the meter. labstac.com... -
Page 8: Instrument Operation
Fig. 5-1 Screen icons explanation Table 5-1 Symbol Explanation labstac.com... -
Page 9: Key Functions
Unit: pH Time unit Unit: Sec °C Temperature Unit: °C Manual temperature 10 MTC compensation Represented by character string MTC 11 %PTS Percentage slope value Represented by character string %PTS Measurement Calibration Setting 5.2 Key Functions labstac.com... - Page 10 Switch mV and pH display in measurement state.The value increases mV/pH/Up when the function is set. Enter the setting function.The value decreases when setting the function. Setup Temperature Set manual temperature value. Enter the calibration function during measurement. Calibration Enter Confirm some function. labstac.com...
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Page 11: Instrument Settings
This meter does not support the connection of temperature electrodes, the user needs to use a thermometer to measure the temperature of the solution. Press the "Temp" key, and adjust the temperature to the specified temperature value through the up and down key. labstac.com... - Page 12 When the meter is not working. Users can reset the meter from the defaults backup. The default setting includes the electrode slope is 100%, the temperature is 25.0°C, the reading mode is continuous reading mode, the automatic switch-off function is turned off, etc. labstac.com...
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Page 13: Calibration
In the measurement state, press the "Cal" key to enter the electrode calibration state (the default is automatic identification mode, the word "Auto" is displayed)Wash the pH electrode repeatedly with distilled water, put it in a certain standard buffer solution (such as 7.00pH standard buffer solution), the labstac.com... - Page 14 After the data is stable, press the "Enter" key to complete the Calibration. 【TIPS】 Standard pH buffer solutions are usually obtained in two ways, users can prepare or purchase standard solutions by themselves. Customized: Please refer to appendix to prepare pH standard buffer labstac.com...
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Page 15: Measurement
To ensure accurate measurement, the sample volume in the container should be sufficient to ensure that the junction of the measuring and the reference electrode is completely immersed in the sample.For accurate measurement, it is recommended that users calibrate and measure at the same temperature. labstac.com... -
Page 16: Maintenance And Troubleshooting
8 hours. It can be fully charged in about 4 hours in the shutdown state, that is, the charging cable can be removed after the indicator light is always on.Continuous charging for 24 hours is strictly prohibited. labstac.com... -
Page 17: Electrode Usage And Maintenance
Less than 1 mole /L of dilute acid Organic fatty substances Dilute detergent (weak alkaline) Resin polymer material Alcohol, acetone, ether Protein hemocyte precipitate 5% pepsin +0.1mol/L HCl solution Pigment substance Dilute bleach solution, hydrogen peroxide For more details, see pH electrode instructions. labstac.com... -
Page 18: Troubleshooting
Suitable for solid and semi-solid piercing pH Combination Electrode (Blade spear) BNC(Q9) samples 962242 Suitable for surface or droplet pH Composite Electrode (Flat ) S7-BNC(Q9) samples Suitable for trace samples above 0.2mL, or 962244 narrow-bore S7-BNC(Q9) pH composite electrode (Slender) containers labstac.com... -
Page 19: Appendix
Relationship Table of pH Standard Solution Temperature(°C 10.0 10.2 10.1 10.1 1.68 4.00 7.02 10.06 1.68 4.01 7.00 10.01 1.68 4.01 6.99 9.97 1.69 4.02 6.98 9.93 1.69 4.03 6.97 9.89 4.04 6.97 9.86 1.71 4.06 6.97 9.83 labstac.com... - Page 20 Labstac LLC 82 Wendell Avenue, STE 100, Pittsfield, MA, 01201, USA Email: contact@labstac.com | Website: labstac.com...
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