Pen Meter (DPH1)

WhatsApp Order

The Pen Meter (DPH1) is a pocket-sized, single-parameter pen tester measuring pH (-2.00 to 16.00) with ±0.01 pH ±1 digit accuracy and 0.1/0.01 resolution, featuring replaceable combined electrode design (DPH1-S), multi-color backlit LCD display with reading stability indicator and automatic data lock, IP67 dustproof and waterproof rating, 0 to 60 degrees Celsius temperature measurement with ±0.2 degrees Celsius accuracy, automatic temperature compensation (ATC), 1 to 3 point automatic pH calibration with buffer recognition, support for CH, USA, and NIST standard buffer solutions, low battery indicator, user-configurable automatic shut-off and backlight duration, power-on self-diagnosis, and complete field-ready kit including hard carrying case (28.0 × 23.0 × 8.2 centimeters), pH buffers (pH 4.00, 6.86, and 9.18, 30 mL each), 3 mol KCl electrode storage solution (10 mL), sample vials (30 mL × 3), four AAA batteries, and lanyard—ideal for water quality testing in clinical, pharmaceutical, and environmental applications .

The Pen Meter (DPH1) can also measure oxidation-reduction potential (ORP) by simply adding the optional DORP1-S ORP electrode, extending the instrument’s utility for disinfection efficacy monitoring in water treatment systems .

For the dialysis technician, water quality specialist, clinical laboratory scientist, and pharmaceutical QC chemist, the Pen Meter (DPH1) enables rapid, on-site pH measurement of biological fluids (serum, plasma, urine, cerebrospinal fluid) for metabolic assessment, purified water systems, dialysis fluids, and pharmaceutical process water—critical parameters for ensuring patient safety during renal replacement therapy, diagnosing acid-base disorders, and supporting drug manufacturing .

Key features include multi-color backlit display with reading stability indicator and automatic data lock when stable (smiley icon), power-on self-diagnosis function, low battery indicator, user-configurable automatic shut-off time and backlight duration, replaceable electrode design for extended instrument life, and compatibility with CH, USA, and NIST calibration standards . The IP67 dustproof and waterproof rating ensures reliable operation in harsh field environments, while the complete accessory kit provides field-ready capability .

The replaceable DPH1-S electrode is pre-installed in new meters and is available as a replacement part, extending instrument service life—electrode replacement rather than complete meter replacement . The electrode must be stored with the pH sensing bulb moist using 3 mol KCl storage solution to prevent drying .

For the patient, accurate pH monitoring of water used in dialysis and pharmaceutical manufacturing ensures that critical treatment fluids meet stringent safety and quality standards—preventing potential harm from improperly treated water and supporting the production of safe, effective medications. Additionally, pH measurement of biological fluids supports early detection of metabolic disturbances, acid-base imbalances, and renal dysfunction—enabling timely clinical intervention.

Compare

Add to wishlist

Categories: LABORATORY EQUIPMENT AND SUPPLIES, Analyzers Tags: Dialysis Water Testing, DLAB Pen Meter (DPH1), IP67 pH Tester, Pen Meter (DPH1), Pen-Type pH Analyzer, pH Pen Meter, Pharmaceutical Water QC, Pocket pH Tester, Portable pH Meter, Water Quality Testing

Description

Pen Meter (DPH1)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. pH Measurement of Biological Fluids for Metabolic Assessment

Primary Use: Provides a pocket-sized, single-parameter pen meter that measures pH (-2.00 to 16.00) with high precision (±0.01 pH ±1 digit), automatic temperature compensation (0-60°C), and 1 to 3-point automatic calibration, specifically designed for assessing pH of serum, plasma, urine, cerebrospinal fluid, and other biological specimens .
How it helps: For the clinical laboratory scientist and medical technologist, the DPH1 enables rapid, accurate pH measurement of biological fluids—supporting diagnosis of metabolic acidosis, alkalosis, diabetic ketoacidosis, and renal tubular disorders. The multi-color backlit display ensures easy reading in various lighting conditions, while the IP67 dustproof and waterproof rating allows for use in demanding clinical 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. ORP Measurement for Disinfection Efficacy Monitoring (with Optional Electrode)

Primary Use: When equipped with the optional DORP1-S ORP electrode, the DPH1 measures oxidation-reduction potential from -1000.0 to +1000.0 mV with accuracy of ±0.1 percent of full scale ±1 digit, providing direct assessment of the oxidizing power of disinfection processes .
How it helps: For infection control officers and dialysis technicians, ORP measurement using the DPH1 with optional ORP electrode enables rapid, on-site verification of disinfection efficacy in purified water loops, dialysis water systems, and hospital plumbing—directly confirming that oxidizing agents such as chlorine are present at effective concentrations for microbial control . For the patient, accurate ORP monitoring ensures that water used in renal replacement therapy meets critical safety standards for dialysis treatment.

3. 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 dialysis technicians, water quality specialists, and pharmaceutical QC chemists, the DPH1 provides reliable pH verification of water used in renal replacement therapy and drug manufacturing. The replaceable electrode design (DPH1-S) extends instrument service life, while the reading stability indicator and automatic data lock ensure accurate, reproducible measurements . 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.

4. Replacement Electrode Design for Extended Instrument Life

Primary Use: Features a replaceable combined electrode (DPH1-S) design that allows electrode replacement when the original probe reaches end of life, significantly extending instrument service life .
How it helps: For the laboratory manager and equipment coordinator, the replaceable electrode design reduces total cost of ownership by allowing electrode replacement rather than complete instrument replacement when performance degrades. The combination electrode integrates pH sensing, reference, and temperature sensor into a single replaceable probe . For the patient, reliable, well-maintained equipment ensures consistent water quality monitoring, reducing the risk of undetected water quality issues.

5. Smart Features for Field and Laboratory Use

Primary Use: Pocket-sized pen design with multi-color backlit LCD display, reading stability indicator with automatic data lock, low voltage indicator, power-on self-diagnosis function, user-configurable automatic shut-off time and backlight duration, and IP67 dustproof and waterproof rating .
How it helps: For hospital facility engineers and environmental safety officers, the DPH1’s portable, battery-operated design (4 × AAA batteries) allows for convenient spot-checking of water quality at various points in hospital water distribution systems. The kit includes a hard carrying case (28.0 × 23.0 × 8.2 centimeters), pH buffer solutions (pH 4.00, 6.86, and 9.18, 30 mL each), 3 mol KCl electrode storage solution (10 mL), sample vials (30 mL × 3), and lanyard for complete field-ready capability . For the patient and community, consistent monitoring of hospital water systems helps prevent healthcare-associated infections and ensures environmental compliance.

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.

13. Reagent and Buffer Quality Verification: Used to verify pH of diagnostic reagents, buffers, staining solutions, and culture media in clinical chemistry, histopathology, and microbiology laboratories.

14. Aquaculture and Zebrafish Facility Management: Monitors pH in aquatic animal housing facilities within research institutions to ensure optimal environmental conditions .

15. ORP Measurement for Redox Status Assessment (with Optional Electrode): Measures the oxidation-reduction potential of aqueous solutions when equipped with DORP1-S electrode, providing information about the total oxidizing or reducing capacity of water samples.

KEY PRODUCT FEATURES

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A pocket-sized, single-parameter pen meter capable of measuring pH, ORP (with optional electrode), and temperature, with replaceable combined electrode design (DPH1-S), multi-color backlit LCD display, IP67 dustproof and waterproof rating, and complete field-ready accessory kit .
Designation: DPH1 Pen Meter, DPH1 Pen-Type pH Meter, Pocket pH Analyzer, DLAB DPH1, Pen-Type pH Tester.
Key Components:
- Instrument Meter: Pocket-sized pen housing with multi-color backlit LCD display, IP67 dustproof and waterproof rating, low battery indicator, and power-on self-diagnosis function .
- pH Electrode: Replaceable combined probe (DPH1-S, pre-installed) with glass pH sensing bulb and integrated temperature sensor .
- pH Buffer Solutions: pH 4.00, pH 6.86, and pH 9.18 calibration buffers, 30 mL each .
- Electrode Storage Solution: 3 mol KCl pH/ORP electrode soaking solution, 10 mL .
- Sample Vials: 30 mL sample vials (3 pieces) for convenient sample collection and testing .
- Power Supply: Four 1.5 volt AAA alkaline batteries (pre-installed) .
- Accessories: Hard carrying case (28.0 × 23.0 × 8.2 centimeters), lanyard, instruction manual .
- Optional ORP Capability: Compatible with DORP1-S ORP electrode for oxidation-reduction potential measurement .

2. TECHNICAL & PERFORMANCE PROPERTIES

Measurement Parameters: pH/millivolts/degrees Celsius | ORP/millivolts/degrees Celsius (with optional electrode) .
pH Measurement Range: (-2.00 to 16.00) pH .
pH Resolution: 0.1 or 0.01 (selectable) .
pH Accuracy: ±0.01 pH ±1 digit .
pH Calibration: 1 to 3 points automatic calibration; automatic buffer recognition; supports CH, USA, and NIST standard buffer solutions .
pH Automatic Temperature Compensation Range: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) .
ORP Measurement Range (with optional electrode): (-1000.0 to +1000.0) millivolts .
ORP Resolution (with optional electrode): 0.1 or 1 (selectable) .
ORP Accuracy (with optional electrode): ±0.1 percent of full scale ±1 digit .
Temperature Measurement Range: 0.0 to 60.0 degrees Celsius (32.0 to 140.0 degrees Fahrenheit) .
Temperature Accuracy: ±0.2 degrees Celsius .
Display: Multi-color backlit LCD display; display mode changes color based on measurement status; reading stability indicator (smiley icon); automatic data lock when stable .
User Settings: Customizable automatic shut-off time; adjustable backlight display duration; low voltage indicator; power-on self-diagnosis function; restore to factory default function .
Calibration Options: CH, USA, and NIST standard buffer solutions for region-specific calibration requirements .
Protection Class: IP67 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes), suitable for harsh field environments .
Operating Conditions: 0 to 60 degrees Celsius; suitable for field and laboratory use .
Power: Four AAA alkaline batteries (1.5 volts each); user replaceable; low battery indicator .
Dimensions (Carrying Case): 28.0 × 23.0 × 8.2 centimeters .
Electrode Compatibility: Replaceable combined probe (DPH1-S) with integrated temperature sensor for automatic temperature compensation .
Quality System: Manufactured under ISO 9001:2015 quality management system .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Pocket-sized, ergonomic pen-style handheld design with replaceable combined probe; IP67 dustproof and waterproof rating for field use and harsh environments .
Display: Multi-color backlit LCD display; screen color changes based on measurement status and data stability; power-on self-diagnosis function .
User Interface: Simple operation; short press to power on; mode selection for pH and optional ORP; reading stability indicator (smiley icon) confirms stable measurement; automatic data lock automatically locks readings when stable .
Calibration: pH module supports 1 to 3 point automatic calibration with buffer recognition; supports CH, USA, and NIST standard buffer options .
Measurement Mode: Single parameter pH measurement; displays pH in pH units and temperature in degrees Celsius or degrees Fahrenheit simultaneously .
Data Locking: Auto-hold function automatically locks readings when stability indicator confirms stable measurement; short press to release auto-hold .
Replaceable Electrode: Combined probe design allows electrode replacement (DPH1-S) to extend instrument service life .
Portability: Compact pocket-sized design with hard carrying case for safe transport and storage; lanyard included for convenient carrying .
Power Management: Low voltage indicator alerts when batteries need replacement; user-configurable automatic shut-off and backlight duration to conserve battery life .
Self-Diagnosis: Power-on self-diagnosis function verifies system integrity before each use .
Factory Reset: Restore to factory default function available for calibration and parameter restoration .
Electrode Storage: Store electrode with protective cap in place; keep pH sensing bulb moist using 3 mol KCl storage solution to prevent drying; never store dry .

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: In Vitro Diagnostic preparatory equipment; laboratory water quality testing instrument .
Safety Certifications: Manufactured under ISO 9001:2015 quality management system; CE compliant .
Protection Class: IP67 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes), suitable for harsh field environments .
Electrical Safety: Low-voltage operation with four AAA batteries (1.5 volts each); safe for use in laboratory and field environments.
Material Safety: Plastic housing with replaceable combined probe; glass pH sensing bulb; polycarbonate electrode body (avoid organic solvents such as carbon tetrachloride, trichloroethylene, tetrahydrofuran, toluene, xylene, methyl ethyl ketone, which may damage plastic components) ; RoHS compliant materials.
Calibration Compliance: Supports CH, USA, and NIST standard buffer solutions for region-specific calibration requirements .
GLP Compliance: Multi-point calibration capability and data locking support quality documentation for regulatory compliance.
Electrode Replacement Indicator: Replace probe when readings become unstable, calibration fails repeatedly, glass bulb is cracked, or physical damage is visible.
Warranty: 1 year manufacturer warranty (electrodes and batteries are consumables and not covered) .

5. STORAGE & HANDLING ATTRIBUTES

Storage: Store the meter in its hard carrying case in a clean, dry environment; protect from extreme temperatures and direct sunlight; remove batteries for long-term storage .
Cleaning: Rinse the 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 beyond the IP67 rating limits; for the glass pH bulb, avoid touching or scrubbing with abrasive materials .
Inspection: Inspect the electrode for damage or contamination before each use; check the glass pH bulb for cracks or damage; verify calibration before critical measurements; power-on self-diagnosis function verifies system integrity.
Operation: Remove the protective cap; power on by short pressing the power button; rinse electrode with distilled water; immerse electrode in sample, stir gently; wait for stability indicator (smiley icon); read stabilized value; automatic data lock will lock readings when stable.
Electrode Storage: Store electrode with protective cap in place; keep the pH sensing bulb moist using 3 mol KCl storage solution to prevent drying; never store dry .
Electrode Hydration: If the pH sensing bulb has dried out, soak in 3 mol KCl storage solution for 24 to 48 hours before use; recalibrate before use .
Calibration: Calibrate before first use or when measurement errors are suspected; calibrate with pH 4.00, pH 6.86, and pH 9.18 buffers (1 to 3 points) as appropriate for the expected sample pH range .
Battery Replacement: Replace batteries when low voltage indicator appears; use four AAA alkaline batteries (1.5 volts each); ensure correct polarity when installing new batteries .
Electrode Protection: Use the protective cap when not in use to prevent damage to the glass pH bulb .
Spill Management: If liquid spills onto the meter, wipe immediately with a soft, dry cloth; despite IP67 rating, avoid prolonged immersion.

6. LABORATORY & CLINICAL APPLICATIONS

Primary Application: Portable pH measurement of biological fluids (serum, plasma, urine, CSF), dialysis water, pharmaceutical process water, and environmental samples in clinical diagnostic, pharmaceutical, and research laboratories .
Clinical Role: Essential water quality testing instrument for dialysis units, hospital engineering departments, infection control, pharmaceutical quality control laboratories, clinical chemistry laboratories, and environmental monitoring programs requiring rapid on-site pH assessment .

SAFETY HANDLING PRECAUTIONS

1. SAFETY PRECAUTIONS

Electrical Safety: Do not immerse the meter beyond the IP67 rating limits; avoid immersion in liquids other than water samples; ensure battery compartment is properly sealed before use.
Electrode Handling: The glass pH bulb is fragile; handle with care to prevent breakage; do not touch glass bulb with fingers, as oils can affect measurement accuracy.
Electrode Storage: Store electrode with protective cap in place; keep the pH sensing bulb moist using 3 mol KCl storage solution; never store dry .
Calibration Verification: Calibrate daily or before critical use using fresh pH buffer solutions appropriate for the expected measurement range .
Sample Compatibility: Rinse electrode thoroughly with distilled water between different samples to prevent cross-contamination; ensure there are no air bubbles trapped on the electrode surface during measurement.
Chemical Compatibility: Avoid using the electrode in organic solvents such as carbon tetrachloride, trichloroethylene, tetrahydrofuran, toluene, xylene, or methyl ethyl ketone, which may damage the polycarbonate plastic body .
Battery Safety: Use only AAA alkaline batteries; do not mix old and new batteries; remove batteries for long-term storage to prevent leakage; dispose of used batteries properly.
Environmental Protection: Dispose of buffer solutions, sample vials, and other consumables according to local environmental regulations; pH buffer solutions contain salts and may be disposed of via standard laboratory waste streams.
Self-Diagnosis: Run power-on self-diagnosis function before each use to verify system integrity.
Training: Only trained laboratory personnel should operate the DPH1 Pen Meter for water quality testing applications.

2. FIRST AID MEASURES

Buffer Solution Exposure: If pH buffer solution splashes into eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Sample Splash: If biological sample splashes into eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Glass Breakage: If the pH glass bulb breaks, carefully collect fragments using forceps; dispose in sharps container; inspect sample for glass contamination before further use .
Storage Solution Exposure: If electrode storage solution (3 mol KCl) splashes into eyes, flush with water for 15 minutes, seek medical attention; if on skin, wash with soap and water.
Electrical Malfunction: If the meter shows signs of electrical malfunction (erratic readings, display issues, battery leakage), remove batteries immediately; do not attempt to operate; contact service personnel.
Electrode Damage: If the electrode is damaged, discontinue use; replace with a new DPH1-S probe.
Battery Leakage: If battery leakage occurs, remove batteries immediately, clean the battery compartment with a dry cloth, dispose of batteries properly; avoid skin contact with leaked electrolyte .

3. FIRE FIGHTING MEASURES

Flammability: The plastic housing and carrying case are combustible; may melt or burn if exposed to flame or high heat.
Extinguishing Media: Use carbon dioxide or dry chemical extinguisher for fires involving plastic components.
Fire Response: Remove batteries if safe to do so; do not use water on electrical fire; evacuate area if fire cannot be quickly contained.

Pen Meter (DPH1)

The Pen Meter (DPH1) can also measure oxidation-reduction potential (ORP) by simply adding the optional DORP1-S ORP electrode, extending the instrument’s utility for disinfection efficacy monitoring in water treatment systems .

Pen Meter (DPH1)

PRIMARY CLINICAL & DIAGNOSTIC USES

1. pH Measurement of Biological Fluids for Metabolic Assessment

2. ORP Measurement for Disinfection Efficacy Monitoring (with Optional Electrode)

Primary Use: When equipped with the optional DORP1-S ORP electrode, the DPH1 measures oxidation-reduction potential from -1000.0 to +1000.0 mV with accuracy of ±0.1 percent of full scale ±1 digit, providing direct assessment of the oxidizing power of disinfection processes .

3. 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 .

4. Replacement Electrode Design for Extended Instrument Life

Primary Use: Features a replaceable combined electrode (DPH1-S) design that allows electrode replacement when the original probe reaches end of life, significantly extending instrument service life .

5. Smart Features for Field and Laboratory Use

Primary Use: Pocket-sized pen design with multi-color backlit LCD display, reading stability indicator with automatic data lock, low voltage indicator, power-on self-diagnosis function, user-configurable automatic shut-off time and backlight duration, and IP67 dustproof and waterproof rating .

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.

13. Reagent and Buffer Quality Verification: Used to verify pH of diagnostic reagents, buffers, staining solutions, and culture media in clinical chemistry, histopathology, and microbiology laboratories.

14. Aquaculture and Zebrafish Facility Management: Monitors pH in aquatic animal housing facilities within research institutions to ensure optimal environmental conditions .

15. ORP Measurement for Redox Status Assessment (with Optional Electrode): Measures the oxidation-reduction potential of aqueous solutions when equipped with DORP1-S electrode, providing information about the total oxidizing or reducing capacity of water samples.

1. BASIC IDENTIFICATION ATTRIBUTES

Device Type: A pocket-sized, single-parameter pen meter capable of measuring pH, ORP (with optional electrode), and temperature, with replaceable combined electrode design (DPH1-S), multi-color backlit LCD display, IP67 dustproof and waterproof rating, and complete field-ready accessory kit .

Designation: DPH1 Pen Meter, DPH1 Pen-Type pH Meter, Pocket pH Analyzer, DLAB DPH1, Pen-Type pH Tester.

Key Components:

Instrument Meter: Pocket-sized pen housing with multi-color backlit LCD display, IP67 dustproof and waterproof rating, low battery indicator, and power-on self-diagnosis function .

pH Electrode: Replaceable combined probe (DPH1-S, pre-installed) with glass pH sensing bulb and integrated temperature sensor .

pH Buffer Solutions: pH 4.00, pH 6.86, and pH 9.18 calibration buffers, 30 mL each .

Electrode Storage Solution: 3 mol KCl pH/ORP electrode soaking solution, 10 mL .

Sample Vials: 30 mL sample vials (3 pieces) for convenient sample collection and testing .

Power Supply: Four 1.5 volt AAA alkaline batteries (pre-installed) .

Accessories: Hard carrying case (28.0 × 23.0 × 8.2 centimeters), lanyard, instruction manual .

Optional ORP Capability: Compatible with DORP1-S ORP electrode for oxidation-reduction potential measurement .

2. TECHNICAL & PERFORMANCE PROPERTIES

Measurement Parameters: pH/millivolts/degrees Celsius | ORP/millivolts/degrees Celsius (with optional electrode) .

pH Measurement Range: (-2.00 to 16.00) pH .

pH Resolution: 0.1 or 0.01 (selectable) .

pH Accuracy: ±0.01 pH ±1 digit .

pH Calibration: 1 to 3 points automatic calibration; automatic buffer recognition; supports CH, USA, and NIST standard buffer solutions .

pH Automatic Temperature Compensation Range: 0 to 60 degrees Celsius (32 to 140 degrees Fahrenheit) .

ORP Measurement Range (with optional electrode): (-1000.0 to +1000.0) millivolts .

ORP Resolution (with optional electrode): 0.1 or 1 (selectable) .

ORP Accuracy (with optional electrode): ±0.1 percent of full scale ±1 digit .

Temperature Measurement Range: 0.0 to 60.0 degrees Celsius (32.0 to 140.0 degrees Fahrenheit) .

Temperature Accuracy: ±0.2 degrees Celsius .

Display: Multi-color backlit LCD display; display mode changes color based on measurement status; reading stability indicator (smiley icon); automatic data lock when stable .

User Settings: Customizable automatic shut-off time; adjustable backlight display duration; low voltage indicator; power-on self-diagnosis function; restore to factory default function .

Calibration Options: CH, USA, and NIST standard buffer solutions for region-specific calibration requirements .

Protection Class: IP67 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes), suitable for harsh field environments .

Operating Conditions: 0 to 60 degrees Celsius; suitable for field and laboratory use .

Power: Four AAA alkaline batteries (1.5 volts each); user replaceable; low battery indicator .

Dimensions (Carrying Case): 28.0 × 23.0 × 8.2 centimeters .

Electrode Compatibility: Replaceable combined probe (DPH1-S) with integrated temperature sensor for automatic temperature compensation .

Quality System: Manufactured under ISO 9001:2015 quality management system .

3. PHYSICAL & OPERATIONAL PROPERTIES

Construction: Pocket-sized, ergonomic pen-style handheld design with replaceable combined probe; IP67 dustproof and waterproof rating for field use and harsh environments .

Display: Multi-color backlit LCD display; screen color changes based on measurement status and data stability; power-on self-diagnosis function .

User Interface: Simple operation; short press to power on; mode selection for pH and optional ORP; reading stability indicator (smiley icon) confirms stable measurement; automatic data lock automatically locks readings when stable .

Calibration: pH module supports 1 to 3 point automatic calibration with buffer recognition; supports CH, USA, and NIST standard buffer options .

Measurement Mode: Single parameter pH measurement; displays pH in pH units and temperature in degrees Celsius or degrees Fahrenheit simultaneously .

Data Locking: Auto-hold function automatically locks readings when stability indicator confirms stable measurement; short press to release auto-hold .

Replaceable Electrode: Combined probe design allows electrode replacement (DPH1-S) to extend instrument service life .

Portability: Compact pocket-sized design with hard carrying case for safe transport and storage; lanyard included for convenient carrying .

Power Management: Low voltage indicator alerts when batteries need replacement; user-configurable automatic shut-off and backlight duration to conserve battery life .

Self-Diagnosis: Power-on self-diagnosis function verifies system integrity before each use .

Factory Reset: Restore to factory default function available for calibration and parameter restoration .

Electrode Storage: Store electrode with protective cap in place; keep pH sensing bulb moist using 3 mol KCl storage solution to prevent drying; never store dry .

4. SAFETY & COMPLIANCE ATTRIBUTES

Regulatory Status: In Vitro Diagnostic preparatory equipment; laboratory water quality testing instrument .

Safety Certifications: Manufactured under ISO 9001:2015 quality management system; CE compliant .

Protection Class: IP67 (dustproof and waterproof against temporary immersion up to 1 meter for 30 minutes), suitable for harsh field environments .

Electrical Safety: Low-voltage operation with four AAA batteries (1.5 volts each); safe for use in laboratory and field environments.