Ar Buffer Solution Ph 4
Analytical Standard
Analytical Reagent

Buffer Solution pH 4.00

Analytical Reagent grade Buffer Solution pH 4.00 manufactured for pH meter calibration, analytical chemistry, and precision measurements. Our AR grade buffer provides reliable pH standards for instrument calibration, quality control testing, and analytical procedures.

  • Analytical Grade Purity
  • pH Meter Calibration
  • Precision Standards
  • Quality Control Testing
  • Stable pH Value
  • Research Laboratory Use
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Technical Specifications

pH Value: 4.00 ± 0.01 at 25°C
Buffer System: Potassium hydrogen phthalate
Chemical Formula: KHC₈H₄O₄
CAS Number: 877-24-7
Molecular Weight: 204.22 g/mol
Physical State: Clear, colorless solution
Buffer Capacity: High buffering capacity
Temperature Coefficient: -0.0001 pH/°C
Ionic Strength: 0.05 M
Conductivity: 5.0 ± 0.5 mS/cm
Chloride (Cl): ≤ 0.0005%
Sulfate (SO₄): ≤ 0.001%
Heavy Metals (as Pb): ≤ 0.0005%
Traceability: NIST SRM certified
Shelf Life: 2 years from manufacture
Storage Temperature: 15-25°C
Packaging Options: 100ml, 250ml, 500ml, 1L bottles

Applications

pH Meter Calibration
Analytical Method Validation
Buffer System Testing
Educational Laboratories
Quality Control Testing
Reference Standard
Pharmaceutical Analysis
Environmental Testing
Water Quality Analysis
Soil pH Standardization
Research Applications
Instrument Maintenance

Industry-Specific Grades

DRAVYOM offers specialized pH 4.00 buffer solution grades tailored for specific analytical and calibration requirements, ensuring optimal pH measurement accuracy and regulatory compliance across diverse laboratory applications.

AR Grade (Analytical Reagent)
pH Accuracy: ± 0.01 at 25°C Heavy Metals: ≤ 0.0005% Chloride: ≤ 0.0005% Application: General analytical procedures
NIST Traceable Grade
pH Accuracy: ± 0.005 at 25°C Traceability: NIST SRM certified Documentation: Complete COA Application: Calibration standards
Research Grade
pH Accuracy: ± 0.002 at 25°C Temperature Range: 0-60°C Stability: 2+ years Application: Advanced research work
Educational Grade
pH Accuracy: ± 0.02 at 25°C Safety: Student-safe formulation Packaging: Small bottles Application: Teaching laboratories

Quality Standards

DRAVYOM's AR Grade pH 4.00 Buffer Solution is manufactured under stringent quality control protocols, meeting international analytical standards including NIST, ISO, and pharmacopoeia specifications. Our analytical-grade production ensures consistent pH measurement accuracy and regulatory compliance.

ISO 9001:2015 Certified Manufacturing
NIST Traceable Standards
Precise pH 4.00 ± 0.01
Advanced pH Testing
Temperature Stability
Batch-to-Batch Consistency
Traceable Certificate of Analysis
Extended Shelf Life

Advanced Chemical Properties & Performance

AR Grade pH 4.0 Buffer Solution exhibits exceptional pH stability and precision essential for analytical calibration. Its ultra-pure composition ensures reliable performance in pH meter calibration, analytical procedures, and quality control applications requiring accurate pH 4.0 reference standards.

Buffer Properties
pH Value: 4.00 ± 0.01 at 25°C
Buffer System: Potassium hydrogen phthalate
Buffer Capacity: High resistance to pH change
Ionic Strength: 0.05 M nominal
Physical Properties
Appearance: Clear, colorless solution
Conductivity: 1.5-2.0 mS/cm at 25°C
Temperature Coefficient: -0.0002 pH/°C
Osmolality: 100 ± 10 mOsm/kg
Calibration Performance
Accuracy: ±0.01 pH units
Precision: ±0.005 pH units repeatability
Traceability: NIST SRM certified
Measurement Range: 15-35°C operational
Purity Specifications
Phthalate Content: Precisely controlled
Chloride: ≤0.0005%
Heavy Metals: ≤0.0001%
Organic Impurities: ≤0.001%
Stability Properties
Shelf Life: 2 years (unopened)
Working Life: 3 months after opening
pH Drift: ≤0.01 pH/month
Container Type: HDPE bottles with seal

Performance Characteristics

Detailed performance metrics demonstrate AR Grade pH 4.0 Buffer Solution superiority in calibration applications with exceptional pH accuracy, reliable electrode response, and reproducible results across diverse analytical instrumentation.

pH Accuracy

Precision: 4.00 ± 0.01 pH at 25°C

Exceptional calibration accuracy
Electrode Response

Stable reading: <30 seconds equilibration

Rapid measurement response
Temperature Stability

Coefficient: -0.0002 pH/°C

Minimal temperature dependence
Long-term Stability

pH drift: ≤0.01 pH/month storage

Extended calibration validity
Batch Consistency

Variation: ±0.005 pH between batches

Outstanding lot-to-lot reproducibility
Buffer Capacity

High resistance to contamination effects

Robust measurement performance

Safety Information

Generally safe to handle with standard laboratory precautions. May cause mild eye irritation. Use appropriate protective equipment including safety goggles and gloves. Avoid ingestion and ensure adequate ventilation. Rinse thoroughly if contact occurs with skin or eyes.

Mild Irritant
Eye Protection Required
Rinse After Contact

Storage & Handling

Store in original sealed containers at room temperature away from extreme temperatures and direct sunlight. Avoid contamination by using clean pipettes and containers. Do not dilute or mix with other solutions. Replace cap immediately after use.

Room temperature storage (15-30°C)
Prevent contamination
Keep tightly sealed
Protect from direct sunlight

Chemical Mechanisms & Reaction Pathways

pH 4 Buffer Solution exhibits controlled acidic buffering mechanisms through optimized acid-base equilibria, making it suitable for analytical applications requiring stable acidic conditions and precise pH control in enzymatic and biochemical assays.

Acetate Buffer System

CH₃COOH/CH₃COONa equilibrium maintaining pH 4.00 ± 0.02

Stable acidic buffering capacity
Ionic Strength Control

Controlled ionic environment optimizing analytical conditions

Enhanced electrochemical stability
Enzyme Compatibility

Optimal pH for acidic enzymes and protein stability

Enhanced biochemical applications
Temperature Stability

pH maintained across analytical temperature range

Consistent analytical performance
Buffer Capacity

High buffering capacity against acid/base additions

Robust analytical conditions

Regulatory Compliance & Documentation

Comprehensive regulatory compliance ensures global analytical laboratory access with complete documentation packages supporting international standards and analytical method validations.

ACS Specifications

American Chemical Society analytical reagent standards compliance

ISO 6353 Standard

International standard for reagent specifications and testing

USP Grade Available

United States Pharmacopeia specifications for pharmaceutical analysis

REACH Registration

European Union chemical regulation compliance

EPA Method Support

Validated for EPA environmental analytical methods

SDS Documentation

Multi-language Safety Data Sheets (16 sections, GHS compliant)

Technical Support & Value-Added Services

DRAVYOM's analytical chemistry team provides comprehensive buffer method support, troubleshooting assistance, and analytical services to optimize AR Grade pH 4 Buffer performance in your specific analytical applications.

Buffer Method Development
  • pH optimization and buffer capacity calculations
  • Ionic strength adjustment protocols
  • Temperature stability assessment
  • Custom pH formulation guidance
Analytical Services
  • Certificate of Analysis verification
  • Custom pH and conductivity testing
  • Buffer capacity validation
  • Stability assessment
Technical Support
  • Biochemical assay consultation
  • Safe handling and storage training
  • Method transfer support
  • Laboratory safety protocols
Performance Services
  • Method validation support
  • System suitability testing
  • Stability studies
  • Quality assurance consultation

Environmental Impact & Sustainability

Our AR Grade pH 4 Buffer production emphasizes environmental responsibility through sustainable manufacturing practices, biodegradable components, and comprehensive environmental impact management for analytical laboratory operations.

Biodegradable Components

Environmentally friendly acetate buffer with natural degradation

Waste Minimization

Optimized concentrations reducing chemical usage

Clean Production

Energy-efficient preparation with emission controls

Safe Disposal

Comprehensive disposal and neutralization guidance

ISO 14001

Environmental management system certified production

Container Recycling

Glass container return and recycling programs

Manufacturing Excellence & Quality Control

DRAVYOM's state-of-the-art analytical reagent manufacturing facility employs advanced buffer preparation technology with continuous monitoring systems to ensure consistent AR Grade pH 4 Buffer quality and performance across all production batches.

Production Process

Controlled preparation with high-purity acetic acid and sodium acetate

Precise pH control and ionic strength adjustment
Quality Testing

16-point analytical testing protocol including pH, conductivity, and buffer capacity

Potentiometric verification and stability testing
Quality Systems

ISO 9001:2015 quality management with analytical laboratory accreditation

Continuous improvement and method validation
Packaging Control

Chemical-resistant containers with controlled atmosphere protection

pH stability preservation and contamination prevention

Market Applications & Performance Data

Comprehensive analytical laboratory data demonstrating AR Grade pH 4 Buffer effectiveness across diverse applications with quantified performance metrics and analytical method validations.

Buffer Performance
pH accuracy: 4.00 ± 0.02 at 25°C Buffer capacity: β = 0.05 M/pH unit Temperature coefficient: -0.014 pH/°C
Biochemical Applications
Enzyme activity: >95% maintained Protein stability: Excellent preservation Nucleic acid: Compatible for acidic conditions
Solution Quality
Ionic strength: 0.1 M controlled Clarity: Crystal clear solutions Conductivity: 12.9 mS/cm at 25°C
Validation Data
Method validation: NIST buffer standards Stability: 24+ months proven shelf life Reproducibility: <0.01 pH unit batch-to-batch

DRAVYOM Competitive Advantages

Ultra-Precise pH Control

pH 4.00 ± 0.01, conductivity ±0.1%, guaranteed analytical performance

Biochemical Excellence

Enhanced enzyme compatibility for acidic biochemical applications

NIST Traceable Standards

Certified reference materials with comprehensive documentation

Reliable Supply Chain

Consistent availability with pH-controlled logistics

Buffer Expertise

Analytical chemistry support team with pH specialists

Environmental Responsibility

Biodegradable acetate system with minimal environmental impact