Portable pH Meter -Single Parameter (DPH10)

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The Portable pH Meter – Single Parameter (DPH10) is a portable, single-parameter benchtop/field pH meter featuring a 3.5-inch TFT LCD color screen, high-precision pH measurement (±0.002 pH accuracy), automatic temperature compensation (ATC), 1-3 point automatic calibration with buffer recognition, 3000-data-set storage capacity, IP57 dustproof/waterproof rating, rechargeable lithium battery with Type-C charging, and comprehensive data management for GLP compliance, designed for accurate pH measurement in clinical diagnostic, pharmaceutical, and research laboratories .

Key features include a 3.5-inch TFT LCD color screen for clear visibility , intelligent operating system with timed measurement and data lock functions , strong data management with 3000 data set storage , 1-3 point automatic pH calibration with buffer recognition , IP57 dustproof/waterproof rating for field use , and rechargeable lithium battery with Type-C charging for convenient power . The meter includes a plastic body ATC pH electrode (D201T-H) with integrated temperature sensor for automatic temperature compensation .

The Portable pH Meter – Single Parameter (DPH10) supports pH measurement of biological fluids (serum, plasma, urine, CSF) for metabolic assessment, quality control of dialysis water and purified water systems for patient safety, pharmaceutical process water and cleaning validation for drug manufacturing, ORP measurement for disinfection efficacy monitoring, and reagent and buffer quality verification for diagnostic testing .

For the clinical laboratory scientist and medical technologist, the Portable pH Meter – Single Parameter (DPH10) enables rapid, accurate pH measurement of patient specimens supporting diagnosis of metabolic acidosis, alkalosis, diabetic ketoacidosis, and renal tubular disorders . For the dialysis technician and pharmaceutical QC chemist, the meter provides reliable pH verification of water used in renal replacement therapy and drug manufacturing, ensuring patient safety and product quality . For the patient, accurate pH measurement ensures proper diagnosis of acid-base disorders, safe dialysis water, and high-quality pharmaceutical products .

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Categories: LABORATORY EQUIPMENT AND SUPPLIES, Analyzers Tags: Automatic Temperature Compensation, Clinical Laboratory Equipment, Dialysis Water Testing, DLAB DPH10, pH Electrode, pH Measurement, Pharmaceutical Water QC, Portable pH Analyzer, Portable pH Meter, Single-Parameter pH Meter

Description

Portable pH Meter -Single Parameter (DPH10)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. pH Measurement of Biological Fluids for Diagnostic Assessment

Primary Use: Provides a portable, single-parameter pH meter with 3.5-inch TFT LCD color screen, capable of measuring pH (-2.000 to 20.000 pH) with high precision (±0.002 pH) and automatic temperature compensation .
How it helps: For the clinical laboratory scientist and medical technologist, the DPH10 enables rapid, accurate pH measurement of biological fluids including serum, plasma, urine, cerebrospinal fluid, and other patient specimens—supporting diagnosis of metabolic acidosis, alkalosis, diabetic ketoacidosis, and renal tubular disorders . The 3.5-inch TFT color screen and user-friendly UI simplify operation in busy clinical settings, while the IP57 dustproof/waterproof rating allows for use in diverse environments . For the patient, accurate pH measurement of biological fluids supports early detection of metabolic disturbances, acid-base imbalances, and renal dysfunction—enabling timely clinical intervention.

2. Quality Control of Dialysis Water and Purified Water Systems

Primary Use: Used to verify pH of dialysis water, purified water loops, and water-for-injection (WFI) systems in healthcare and pharmaceutical facilities, ensuring compliance with quality standards .
How it helps: For the dialysis technician, water quality specialist, and pharmaceutical QC chemist, the Portable pH Meter – Single Parameter (DPH10) provides reliable pH verification of water used in renal replacement therapy and drug manufacturing. The meter supports 1-3 point automatic calibration with buffer recognition and stores up to 3000 GLP-compliant data sets with timestamps . For the patient, rigorous pH monitoring of dialysis water helps prevent adverse events related to improper water composition, ensuring the safety and efficacy of renal replacement therapy.

3. Pharmaceutical Process Water and Cleaning Validation

Primary Use: Supports validation and routine monitoring of purified water systems, as well as verification of pH in cleaning validation protocols for pharmaceutical manufacturing equipment .
How it helps: For the pharmaceutical QA/QC chemist and validation specialist, the DPH10’s high accuracy (±0.002 pH) and data storage capability (3000 sets) support GLP-compliant documentation for regulatory audits . The rechargeable lithium battery with Type-C charging ensures uninterrupted operation during extended validation campaigns. For the patient, this data integrity ensures that injectable medications and IV solutions are free from pH-related contaminants, upholding product safety and efficacy.

4. ORP Measurement for Disinfection Efficacy Monitoring

Primary Use: The DPH10 also measures Oxidation-Reduction Potential (ORP) from -1999.9 mV to +1999.9 mV with ±0.03% F.S. accuracy, enabling assessment of disinfection efficacy in water treatment systems .
How it helps: For infection control officers and facility engineers, ORP measurement provides a direct method to verify the oxidizing power of disinfection processes in purified water loops, dialysis water systems, and hospital plumbing—ensuring they are actively combating microbial growth. For the patient, this ensures that water used in treatments like dialysis is free from harmful microorganisms and meets critical safety standards.

5. Reagent and Buffer Quality Verification

Primary Use: Used to verify pH of diagnostic reagents, buffers, staining solutions, and culture media in clinical chemistry, histopathology, and microbiology laboratories .
How it helps: For the clinical laboratory scientist and quality control officer, the Portable pH Meter – Single Parameter (DPH10) ensures that reagents and buffers used in diagnostic testing are within specified pH ranges—critical for enzyme activity, antibody-antigen reactions, and cell culture viability. For the patient, proper reagent pH ensures that diagnostic test results are accurate and reproducible, reducing the risk of false results due to suboptimal reaction conditions.

SECONDARY & SUPPORTIVE USES

1. pH Measurement of Pharmaceutical Preparations: Used to verify pH of intravenous solutions, parenteral nutrition formulations, dialysis fluids, and other pharmaceutical preparations requiring precise pH control.

2. pH Testing of Purified Water Systems: Monitors pH of purified water, water-for-injection (WFI), and distilled water in hospital and laboratory water treatment systems .

3. pH Assessment of Gastrointestinal Fluids: Measures pH of gastric aspirate and other gastrointestinal fluid samples for diagnostic evaluation of digestive disorders.

4. pH Monitoring in Dialysis and Renal Care: Measures pH of dialysate solutions and patient samples in hemodialysis and peritoneal dialysis settings to ensure proper acid-base management.

5. Quality Control in Blood Gas Analysis: Supports pH verification of blood gas quality control materials for assessment of blood gas analyzer performance.

6. pH Testing of Culture Media: Used to verify pH of microbiological culture media and cell culture media to ensure optimal growth conditions for diagnostic cultures.

7. pH Measurement in Veterinary Diagnostic Laboratories: Used for pH measurement of animal blood, urine, and tissue samples in veterinary diagnostic workflows.

8. Environmental and Water Quality Monitoring: Measures pH of water samples in hospital environmental monitoring programs, including cooling towers, boiler feed water, and wastewater discharge.

9. Educational and Training Laboratories: Serves as a teaching tool for demonstrating pH measurement principles in medical technology and clinical laboratory science training programs.

10. Pharmaceutical Quality Control: Used in QC laboratories for pH verification of raw materials, in-process samples, and finished pharmaceutical products.

11. Food and Beverage Quality Control: Verifies pH of food and beverage products in hospital nutrition services and food safety testing.

12. Field and Remote Sample Testing: Portable design allows for on-site pH measurement in diverse locations including patient bedside, field studies, and remote healthcare facilities.

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A portable, single-parameter benchtop/field pH meter with 3.5-inch TFT LCD color screen, automatic temperature compensation, and multi-point automatic calibration, designed for high-precision pH measurement in clinical diagnostic, pharmaceutical, and research laboratories .
Designation: Portable pH Meter - Single Parameter (DPH10), DLAB DPH10, Portable pH Meter, Single-Parameter pH Analyzer .
Key Components:

o Instrument Meter: Portable housing with 3.5-inch TFT LCD color screen, IP57 dustproof/waterproof rating, and Type-C charging port .

o pH Electrode: Plastic body ATC pH electrode D201T-H with integrated temperature sensor .

o pH Buffer Solutions: 50mL each of pH 4.00, pH 6.86, and pH 9.18 calibration buffers .

o Power Supply: Rechargeable lithium battery DH10-LI01 (pre-installed), Type-C charging cable .

o Accessories: Hard carrying case (33 × 27.2 × 8.2 cm), instruction manual .

2. TECHNICAL & PERFORMANCE PROPERTIES

Measurement Parameters: pH/mV.℃ | mV(ORP).℃ .
pH Measurement Range: (-2.000 ~ 20.000) pH .
pH Resolution: 0.1 / 0.01 / 0.001 (selectable) .
pH Accuracy: ±0.002 pH ± 1 digit .
pH Calibration: 1~3 points automatic calibration; automatic buffer recognition .
pH Automatic Temperature Compensation (ATC) Range: (-10.0~135.0) ℃ / (14.0~275.0) °F .
ORP Measurement Range: (-1999.9 ~ +1999.9) mV .
ORP Resolution: 0.1 (selectable to 1) .
ORP Accuracy: ±0.03% F.S. ± 1 digit .
Temperature Measurement Range: (-10.0~135.0) ℃ / (14.0~275.0) °F .
Temperature Accuracy: ±0.2 ℃ .
Data Storage Capacity: 3000 data sets (parameter, measured value, temperature, date/time) .
Display: 3.5-inch TFT LCD color screen, brightness adjustable .
User Features: Timed measurement, parameter setting, data lock function, automatic power-off, factory reset .
Power Supply: Rechargeable lithium battery (model DH10-LI01) .
Charging Port: Type-C / USB (conforms to EU standards) .
Protection Class: IP57 (dustproof and waterproof against temporary immersion) .
Dimensions (Carrying Case): 33 × 27.2 × 8.2 cm .
Electrode Compatibility: Compatible with DLAB pH and ORP electrodes; pre-amplified pH electrode ensures long-distance stable signal transmission .
Certifications: ISO 9001:2015, CE .
Warranty: 2-year manufacturer warranty (electrodes are consumables) .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Rugged, ergonomic handheld design with hard carrying case for transport and storage; IP57 dustproof/waterproof rating for field use .
Display: 3.5-inch high-resolution TFT LCD color screen with adjustable brightness for superior visibility in various lighting conditions; new UI design for intuitive operation .
User Interface: Intelligent operating system with functions for timed measurement, parameter setting, data locking, auto-power off, and factory reset .
Calibration: pH module supports 1-3 point automatic calibration with buffer recognition; supports electrode calibration and standard solution calibration .
Data Management: Stores up to 3000 data sets with full traceability (parameter, value, temperature, timestamp); supports GLP data management standards .
Power Management: Rechargeable lithium battery with low-power management, automatic power-off, and power failure protection functions .
Portability: Compact hard case and IP57 rating allow for safe transport and use in field or industrial environments; foldable stand allows use as a benchtop meter .
Electrode Technology: Plastic body ATC pH electrode with integrated temperature sensor for automatic temperature compensation; pre-amplified design ensures stable signal transmission over long cable distances .
Connectivity: Type-C charging port for convenient field recharging; supports low-power management and power failure protection .

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: IVD (In Vitro Diagnostic) preparatory equipment; complies with GLP standards for data management .
Safety Certifications: ISO 9001:2015 certified; CE certified .
Protection Class: IP57 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes) .
Electrical Safety: Low-voltage operation with rechargeable lithium battery; Type-C charging port with over-current protection; safe for use in laboratory and field environments.
GLP Compliance: Data storage (3000 sets) with timestamps supports GLP documentation; user authentication and data traceability .
Power Management: Built-in low-power management, automatic power-off, and power failure protection functions for sample and data safety .
Electrode Safety: Plastic body pH electrode with pre-amplified design for stable signal transmission; integrated temperature sensor for ATC .

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store the meter in its hard carrying case in a clean, dry environment. pH electrode should be stored with the sensing element moist (in storage solution or pH 4 buffer); never store in distilled or deionized water .
Cleaning: Rinse pH electrode with distilled water after each use. Wipe the meter body with a soft, damp cloth using a mild detergent. Do not submerge the meter body. Do not touch or wipe the glass sensing bulb with abrasive materials .
Inspection: Inspect power cord for damage before each use; check pH electrode for cracks, damage, or contamination; verify calibration before critical measurements .
Operation: Place on stable, level surface; connect appropriate pH electrode; power ON; select measurement mode; calibrate with fresh buffer solutions; immerse electrode in sample; read stabilized pH value after ATC equilibration .
Calibration: Calibrate daily or before critical use using fresh pH buffer solutions (4.00, 6.86, 9.18). Perform 1-3 point calibration depending on required accuracy and sample pH range. Always use fresh calibration standards; do not return used buffer to original container .
Hydration: If pH electrode has dried out, soak in storage solution or pH 4 buffer for 24-48 hours before use; recalibrate before use .
Data Management: Use data storage function to save up to 3000 measurements with timestamps for quality records and GLP documentation. Export data as needed for laboratory information management systems .
Battery Care: Recharge lithium battery as needed; battery is user-replaceable but considered a consumable item; low-power management and automatic power-off functions extend battery life .
Spill Management: If liquid spills onto meter, disconnect power immediately, clean thoroughly with appropriate disinfectant, allow to dry before reuse; IP57 rating provides splash protection but meter should not be submerged .

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: High-precision pH measurement of biological fluids, dialysis water, pharmaceutical process water, buffers, reagents, and environmental samples in clinical diagnostic, pharmaceutical, and research laboratories .
Clinical Role: Essential pH measurement equipment in clinical chemistry laboratories, hospital pathology departments, dialysis units, pharmaceutical QC laboratories, and research facilities requiring accurate pH measurement for patient sample testing .

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Electrical Safety: Disconnect power before cleaning; do not immerse meter in liquid; keep charging cable away from heat sources and sharp edges; ensure Type-C port is dry before charging .
Glass Bulb Care: pH electrode glass sensing bulb is fragile; handle with care to prevent breakage; do not touch or wipe glass bulb with abrasive materials .
Storage: Always keep pH electrode wet (in storage solution or pH 4 buffer); never store in distilled or deionized water, which leaches ions from the glass membrane and damages the reference system .
Calibration Verification: Calibrate daily before testing patient samples using fresh pH buffer solutions; verify calibration with quality control materials before patient testing .
Sample Temperature: Allow samples to equilibrate to room temperature for most accurate measurements, though ATC compensates within specified range (-10 to 135°C) .
Cross-Contamination Prevention: Rinse electrode thoroughly with distilled water between different samples; use fresh calibration buffers; do not return used buffer to original container.
Dehydration Prevention: If electrode shows sluggish response or unstable readings, check for dehydration; soak in storage solution for 24-48 hours and recalibrate before use .
Training: Only trained laboratory personnel should operate the DPH10 for clinical diagnostic applications .

2. FIRST AID MEASURES

Sample Splash: If biological sample or buffer splashes into eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Glass Breakage: If pH electrode glass bulb breaks, carefully collect fragments using forceps; dispose in sharps container; inspect sample for glass contamination before further use.
Buffer Exposure: If buffer solution contacts eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Electrical Malfunction: If meter shows signs of electrical malfunction (smoke, erratic readings, charging issues), disconnect power immediately; do not attempt to operate; contact service personnel.
Chemical Spill: If corrosive chemicals spill on meter, disconnect power immediately, wipe with appropriate neutralizer, dry thoroughly before reconnecting power.

3. FIRE FIGHTING MEASURES

Flammability: Plastic housing, cable, and carrying case are combustible; may melt or burn if exposed to flame or high heat.
Extinguishing Media: Use carbon dioxide (CO₂) or dry chemical extinguisher for electrical fires.
Fire Response: Disconnect meter from charging cable; do not use water on electrical fire; evacuate area if fire cannot be quickly contained.

Portable pH Meter -Single Parameter (DPH10)

Portable pH Meter -Single Parameter (DPH10)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. pH Measurement of Biological Fluids for Diagnostic Assessment

Primary Use: Provides a portable, single-parameter pH meter with 3.5-inch TFT LCD color screen, capable of measuring pH (-2.000 to 20.000 pH) with high precision (±0.002 pH) and automatic temperature compensation .

2. Quality Control of Dialysis Water and Purified Water Systems

Primary Use: Used to verify pH of dialysis water, purified water loops, and water-for-injection (WFI) systems in healthcare and pharmaceutical facilities, ensuring compliance with quality standards .

3. Pharmaceutical Process Water and Cleaning Validation

Primary Use: Supports validation and routine monitoring of purified water systems, as well as verification of pH in cleaning validation protocols for pharmaceutical manufacturing equipment .

4. ORP Measurement for Disinfection Efficacy Monitoring

Primary Use: The DPH10 also measures Oxidation-Reduction Potential (ORP) from -1999.9 mV to +1999.9 mV with ±0.03% F.S. accuracy, enabling assessment of disinfection efficacy in water treatment systems .

5. Reagent and Buffer Quality Verification

Primary Use: Used to verify pH of diagnostic reagents, buffers, staining solutions, and culture media in clinical chemistry, histopathology, and microbiology laboratories .

SECONDARY & SUPPORTIVE USES

1. pH Measurement of Pharmaceutical Preparations: Used to verify pH of intravenous solutions, parenteral nutrition formulations, dialysis fluids, and other pharmaceutical preparations requiring precise pH control.

2. pH Testing of Purified Water Systems: Monitors pH of purified water, water-for-injection (WFI), and distilled water in hospital and laboratory water treatment systems .

3. pH Assessment of Gastrointestinal Fluids: Measures pH of gastric aspirate and other gastrointestinal fluid samples for diagnostic evaluation of digestive disorders.

4. pH Monitoring in Dialysis and Renal Care: Measures pH of dialysate solutions and patient samples in hemodialysis and peritoneal dialysis settings to ensure proper acid-base management.

5. Quality Control in Blood Gas Analysis: Supports pH verification of blood gas quality control materials for assessment of blood gas analyzer performance.

6. pH Testing of Culture Media: Used to verify pH of microbiological culture media and cell culture media to ensure optimal growth conditions for diagnostic cultures.

7. pH Measurement in Veterinary Diagnostic Laboratories: Used for pH measurement of animal blood, urine, and tissue samples in veterinary diagnostic workflows.

8. Environmental and Water Quality Monitoring: Measures pH of water samples in hospital environmental monitoring programs, including cooling towers, boiler feed water, and wastewater discharge.

9. Educational and Training Laboratories: Serves as a teaching tool for demonstrating pH measurement principles in medical technology and clinical laboratory science training programs.

10. Pharmaceutical Quality Control: Used in QC laboratories for pH verification of raw materials, in-process samples, and finished pharmaceutical products.

11. Food and Beverage Quality Control: Verifies pH of food and beverage products in hospital nutrition services and food safety testing.

12. Field and Remote Sample Testing: Portable design allows for on-site pH measurement in diverse locations including patient bedside, field studies, and remote healthcare facilities.

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A portable, single-parameter benchtop/field pH meter with 3.5-inch TFT LCD color screen, automatic temperature compensation, and multi-point automatic calibration, designed for high-precision pH measurement in clinical diagnostic, pharmaceutical, and research laboratories .

Designation: Portable pH Meter - Single Parameter (DPH10), DLAB DPH10, Portable pH Meter, Single-Parameter pH Analyzer .

Key Components:

o Instrument Meter: Portable housing with 3.5-inch TFT LCD color screen, IP57 dustproof/waterproof rating, and Type-C charging port .

o pH Electrode: Plastic body ATC pH electrode D201T-H with integrated temperature sensor .

o pH Buffer Solutions: 50mL each of pH 4.00, pH 6.86, and pH 9.18 calibration buffers .

o Power Supply: Rechargeable lithium battery DH10-LI01 (pre-installed), Type-C charging cable .

o Accessories: Hard carrying case (33 × 27.2 × 8.2 cm), instruction manual .

2. TECHNICAL & PERFORMANCE PROPERTIES

Measurement Parameters: pH/mV.℃ | mV(ORP).℃ .

pH Measurement Range: (-2.000 ~ 20.000) pH .

pH Resolution: 0.1 / 0.01 / 0.001 (selectable) .

pH Accuracy: ±0.002 pH ± 1 digit .

pH Calibration: 1~3 points automatic calibration; automatic buffer recognition .

pH Automatic Temperature Compensation (ATC) Range: (-10.0~135.0) ℃ / (14.0~275.0) °F .

ORP Measurement Range: (-1999.9 ~ +1999.9) mV .

ORP Resolution: 0.1 (selectable to 1) .

ORP Accuracy: ±0.03% F.S. ± 1 digit .

Temperature Measurement Range: (-10.0~135.0) ℃ / (14.0~275.0) °F .

Temperature Accuracy: ±0.2 ℃ .

Data Storage Capacity: 3000 data sets (parameter, measured value, temperature, date/time) .

Display: 3.5-inch TFT LCD color screen, brightness adjustable .

User Features: Timed measurement, parameter setting, data lock function, automatic power-off, factory reset .

Power Supply: Rechargeable lithium battery (model DH10-LI01) .

Charging Port: Type-C / USB (conforms to EU standards) .

Protection Class: IP57 (dustproof and waterproof against temporary immersion) .

Dimensions (Carrying Case): 33 × 27.2 × 8.2 cm .

Electrode Compatibility: Compatible with DLAB pH and ORP electrodes; pre-amplified pH electrode ensures long-distance stable signal transmission .

Certifications: ISO 9001:2015, CE .

Warranty: 2-year manufacturer warranty (electrodes are consumables) .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Rugged, ergonomic handheld design with hard carrying case for transport and storage; IP57 dustproof/waterproof rating for field use .

Display: 3.5-inch high-resolution TFT LCD color screen with adjustable brightness for superior visibility in various lighting conditions; new UI design for intuitive operation .

User Interface: Intelligent operating system with functions for timed measurement, parameter setting, data locking, auto-power off, and factory reset .

Calibration: pH module supports 1-3 point automatic calibration with buffer recognition; supports electrode calibration and standard solution calibration .

Data Management: Stores up to 3000 data sets with full traceability (parameter, value, temperature, timestamp); supports GLP data management standards .

Power Management: Rechargeable lithium battery with low-power management, automatic power-off, and power failure protection functions .

Portability: Compact hard case and IP57 rating allow for safe transport and use in field or industrial environments; foldable stand allows use as a benchtop meter .

Electrode Technology: Plastic body ATC pH electrode with integrated temperature sensor for automatic temperature compensation; pre-amplified design ensures stable signal transmission over long cable distances .

Connectivity: Type-C charging port for convenient field recharging; supports low-power management and power failure protection .

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: IVD (In Vitro Diagnostic) preparatory equipment; complies with GLP standards for data management .

Safety Certifications: ISO 9001:2015 certified; CE certified .

Protection Class: IP57 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes) .

Electrical Safety: Low-voltage operation with rechargeable lithium battery; Type-C charging port with over-current protection; safe for use in laboratory and field environments.

GLP Compliance: Data storage (3000 sets) with timestamps supports GLP documentation; user authentication and data traceability .

Power Management: Built-in low-power management, automatic power-off, and power failure protection functions for sample and data safety .

Electrode Safety: Plastic body pH electrode with pre-amplified design for stable signal transmission; integrated temperature sensor for ATC .

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store the meter in its hard carrying case in a clean, dry environment. pH electrode should be stored with the sensing element moist (in storage solution or pH 4 buffer); never store in distilled or deionized water .

Cleaning: Rinse pH electrode with distilled water after each use. Wipe the meter body with a soft, damp cloth using a mild detergent. Do not submerge the meter body. Do not touch or wipe the glass sensing bulb with abrasive materials .

Inspection: Inspect power cord for damage before each use; check pH electrode for cracks, damage, or contamination; verify calibration before critical measurements .

Operation: Place on stable, level surface; connect appropriate pH electrode; power ON; select measurement mode; calibrate with fresh buffer solutions; immerse electrode in sample; read stabilized pH value after ATC equilibration .