Professional Digital Benchtop pH Meter with Pharmaceutical & Cosmetics Testing Use
Engineered for Advanced Laboratory Accuracy and Data Traceability
Instrava Benchtop pH Meters are designed for high-precision laboratory analysis where measurement accuracy, calibration flexibility, and data traceability are essential.
With 0.001 pH resolution, ±0.002 pH electronic accuracy, 1–5 point calibration with automatic buffer recognition, and full GLP-compliant data management, the system delivers research-grade analytical reliability.
The 7-inch high-definition color LCD, intelligent endpoint detection, automatic electrode diagnostics, and multi-mode reading functions provide a stable and professional measurement experience.
For laboratories, environmental agencies, research institutions, and industrial quality control departments, Instrava offers precision backed by structured data control.
Liquid Analysis Description
Benchtop pH Meters Applicable Scenarios
Instrava Benchtop pH Meters are suitable for:
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Research laboratories and universities
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Pharmaceutical and medical laboratories
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Environmental monitoring centers
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Chemical process laboratories
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Water quality compliance testing
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Industrial product quality verification
The instrument supports high-accuracy measurement across complex and variable laboratory sample conditions.
Benchtop pH Meters Engineering Advantages
0.001-Level High Precision Measurement
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pH range: -2.000 – 20.000 pH
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Resolution selectable: 0.001 / 0.01 / 0.1 pH
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Electronic unit error: ±0.002 pH
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mV range: -2000.00 – 2000.00 mV
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mV resolution selectable: 0.01 / 0.1 / 1 mV
Delivers laboratory-grade sensitivity and analytical flexibility.
Multi-Point Intelligent Calibration (1–5 Points)
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Automatic standard buffer recognition
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Selectable buffer groups: NIST, DIN, GB, USA, MERK
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Custom buffer group support
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Automatic electrode slope and offset diagnosis
Multi-point calibration enhances linearity and improves measurement accuracy across wide pH ranges.
Intelligent Reading Modes
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Auto-read
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Timed-read
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Continuous-read
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Auto-hold endpoint detection
Smart endpoint recognition ensures stable and repeatable data capture.
Advanced Temperature Compensation
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Temperature range: -10.0 – 135.0°C
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Automatic / Manual temperature compensation
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Temperature unit selectable (°C / °F)
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Electronic temperature error: ±0.1°C
Ensures accurate slope correction across varying laboratory conditions.
GLP-Compliant Data Management
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Data storage: 500 sets
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Supports viewing, deleting, filtering by time
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Table and curve display modes
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Data export via USB
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Direct printing via RS-232
Designed for full traceability in regulated laboratory environments.
Professional Laboratory Interface
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7-inch high-definition color LCD
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Button operation with bilingual support
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Startup self-diagnosis
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Auto power-off
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Power failure protection
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Firmware upgrade support
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Reset to factory settings
IP54-rated housing enhances reliability in laboratory conditions.
Complete Laboratory Configuration
Includes:
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E-301-QC 3-in-1 pH composite electrode
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NIST standard buffer solutions (4.01 / 7.00 / 10.01)
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REX-5 electrode stand
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Dust cover
Ready for immediate laboratory deployment.
Liquid Analysis Parameter
Benchtop pH Meters Technical Specifications
Measurement Performance
| Parameter | Specification |
|---|---|
| pH Range | -2.000 – 20.000 pH |
| pH Resolution | 0.001 / 0.01 / 0.1 pH |
| Electronic pH Error | ±0.002 pH |
| mV Range | -2000.00 – 2000.00 mV |
| mV Resolution | 0.01 / 0.1 / 1 mV |
| mV Error | ±0.03% or ±0.1 mV |
| Temperature Range | -10.0 – 135.0°C |
| Temperature Resolution | 0.1°C |
| Temperature Electronic Error | ±0.1°C |
| Instrument Temp Error | ±0.3°C (0–60°C), ±1.0°C (others) |
Calibration & Data
| Parameter | Specification |
|---|---|
| Calibration Points | 1–5 points |
| Buffer Groups | NIST, DIN, GB, USA, MERK + Custom |
| Data Storage | 500 sets (GLP compliant) |
| Communication | USB / RS-232 |
| Print Support | Yes |
| Display | 7-inch HD color LCD |
| Protection Rating | IP54 |
Mechanical & Electrical
| Parameter | Specification |
|---|---|
| Power Supply | AC100–240V input, DC20V output adapter |
| Dimensions | 242 × 195 × 68 mm |
| Weight | Approx. 0.9 kg |
Designed for High-Integrity Laboratory Measurement
Instrava Benchtop pH Meters combine ultra-high resolution, intelligent calibration systems, electrode diagnostics, and GLP-compliant data management to meet the requirements of advanced laboratory environments.
From academic research to regulated industrial testing, the system ensures precision, repeatability, and traceable analytical control.
Instrava — Engineered for Laboratory-Grade Excellence.
Instrava OEM/ODM
Tailored Sourcing & Customization: Getting You the Exact Product You Need
As your trusted supplier and sourcing partner, we bridge the gap between your custom requirements and China’s vast manufacturing capabilities.
Finding the right product in a massive supply chain can be challenging. That is where we step in.
As a curated industrial supplier, our core value is simple: we stand in your shoes to help you procure the most optimal products. Whether you are an EPC contractor needing specialized technical compliance, an OEM equipment manufacturer looking for custom branding, or an industrial distributor/trader seeking competitive edge, we customize and tailor products to fit your exact procurement needs.
How We Customize to Fit Your Procurement Needs
For EPC Contractors & Engineers: We custom-configure instruments and devices to match your precise datasheets—tailoring process connections, exotic materials, signal protocols, and managing third-party calibration and testing so you get project-ready solutions.
For OEM Equipment Manufacturers: We provide comprehensive OEM/ODM customization, including custom housing, labeling, branding (private labeling), and tailored technical specifications to seamlessly integrate with your machinery.
For Industrial Distributors & Traders: We offer flexible customization in packaging, product ranges, and technical parameters, helping you differentiate your portfolio and win more local bids.
Why Partner with Us for Custom Sourcing?
One-Stop Engineering Alignment: You don’t have to deal with multiple factories. We translate your technical requirements into precise manufacturer blueprints.
Strict Quality & Compliance Safeguard: We oversee the entire customization and production process in China, ensuring the final customized product meets your local standards and certifications.
Our Ultimate Value: We don’t just sell what’s on the shelf. We find, customize, and deliver the most suitable and cost-effective product for your unique application.
What is the principle behind 5-point pH calibration?
Five-point calibration establishes multiple reference points across a wide pH range to refine electrode slope and offset correction.
Compared to two-point calibration, multi-point calibration improves linearity over extended ranges (e.g., -2.000 to 20.000 pH), particularly when measuring diverse sample matrices.
It is recommended for research applications requiring high accuracy across acidic, neutral, and alkaline conditions.
What is the acceptable electrode slope range in laboratory standards?
The theoretical Nernst slope at 25°C is approximately 59.16 mV per pH.
In practical laboratory conditions, acceptable electrode slope typically ranges between 95%–105% of theoretical value.
Significant deviation may indicate electrode aging, contamination, or reference junction issues. The built-in electrode diagnostics help identify slope and offset status before measurement.
How should electrode offset values be interpreted?
Offset represents the potential deviation at pH 7.00.
A properly functioning electrode typically shows minimal offset (close to 0 mV).
Large offset values may suggest:
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Reference contamination
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Glass membrane degradation
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Improper calibration procedure
Routine monitoring of slope and offset ensures analytical reliability.
How does the system support GLP compliance?
GLP compliance is achieved through:
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Storage of up to 500 measurement datasets
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Time-stamped records
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Calibration data retention
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Data filtering and retrieval functions
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Direct printing via RS-232
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USB data transfer to PC systems
This structured data management enables traceability required in regulated research and pharmaceutical laboratories.
What is the purpose of firmware upgrade functionality in laboratory instruments?
Firmware upgrade capability ensures:
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Long-term compatibility with evolving laboratory standards
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Feature optimization
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Bug fixes and performance improvements
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Extended instrument lifecycle
It protects laboratory investment and maintains compliance adaptability.
When is multi-reading mode (auto, timed, continuous) recommended?
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Auto-read mode is ideal for routine laboratory measurement requiring endpoint stability.
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Timed-read mode supports standardized testing procedures.
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Continuous-read mode is suitable for dynamic reaction monitoring or titration observation.
Selecting the appropriate reading mode improves repeatability and measurement consistency.
Why Trust Instrava?
We select manufacturers from a neutral, impartial standpoint, always with your best interests in mind.
Our very existence depends on helping you source the products that are the perfect fit for your needs.
Based in China, we are able to conduct on-site inspections of production environments and product quality firsthand.
We help you avoid intermediaries posing as factories.
We facilitate smoother after-sales support, eliminating time zone issues and the delays often associated with dealing directly with factories.
Our multilingual team ensures effective communication.
For a trading startup, every interaction with a client is a precious opportunity—a sign that you are willing to place your trust in us and give us the chance to prove ourselves.
In the digital age, while information is easily accessible, misconceptions often cloud the trust between people.
Instrava relies entirely on trust; it is our core philosophy and the foundation of our existence in society. It is the fundamental basis for our long-term growth and our commitment to serving the community.
Please place your trust in us.
