Acrylic-based polymer waterproofing material - Methods of the test, Part 4: Determination of pH value

IS 13435 Part 4: Scope Summary & Key Specifications

Scope:

• Specifies the method of determination of pH value for acrylic-based polymer waterproofing materials.
• Ensures quality control by standardizing test procedures for pH measurement.

Key Specifications & Procedures (Clause 5.4 and 6)

• Sample Preparation:
  • If viscous, dilute 25 ml sample + 25 ml distilled water.
• Electrode Handling:
  • Remove electrodes immediately after pH reading.
  • Wash electrodes after use.
  • Store electrodes in distilled water when not in use.
• Reporting:
  • pH value reported to the nearest 0.1 pH unit.

Important Notes:

• The standard ensures consistent quality and performance evaluation of acrylic polymer waterproofing materials.
• Related parts cover other tests like solid content, coarse particles, water uptake, film forming temperature, and alkali resistance.

Summary Table: pH Measurement Procedure

This concise scope ensures reliable pH testing critical for waterproofing polymer quality control.

IS 13435 Part 4 (1992) – Key Specifications for pH Determination

• Scope: Method for determining pH of acrylic-based polymer waterproofing materials.
• Sample Preparation:
  • If viscous, dilute 25 ml sample with 25 ml distilled water.
• Measurement Procedure:
  • Measure pH with electrode.
  • Immediately remove and wash electrode after measurement.
  • Store electrodes in distilled water when not in use.
• Result Presentation:
  • Report pH to nearest 0.1 pH unit.
• Relevant IS:
  • Use IS 2:1960 for rounding off numerical values.
• Additional Parts for Acrylic Polymers:
  • Part 1: Solid content
  • Part 2: Coarse particles
  • Part 3: Capillary water uptake
  • Part 5: Minimum film forming temperature & white point
  • Part 6: Alkali resistance test

Quick Reference Table for pH Test (Clause 5.4)

This ensures consistent, reliable pH measurement for quality control of acrylic waterproofing polymers.

IS 13435 Part 4 (1992) — Terminology & Key Specifications for pH Determination

This part covers the method for determining pH value of acrylic-based polymer waterproofing materials.

Key Points & Procedures (Clause 5.4)

• Sample Preparation:
  • For viscous samples, dilute 25 ml sample with 25 ml distilled water.
• Electrode Handling:
  • Remove electrodes immediately after pH reading.
  • Wash electrodes with distilled water.
  • When idle, keep electrodes immersed in distilled water.
• Reporting:
  • pH values must be reported to the nearest 0.1 pH unit.

Important Notes

• The pH test ensures the polymer's chemical stability and compatibility.
• Follow IS 2:1960 for rounding off numerical values.
• The standard is part of a series covering tests like solid content, coarse particles, water uptake, film formation temperature, and alkali resistance.

Summary Table: pH Testing Procedure

flowchart TD
    A[Start: Sample Collection] --> B{Is sample viscous?}
    B -- Yes --> C[Dilute 25 ml sample with 25 ml distilled water]
    B -- No --> D[Use sample as is]
    C --> E[Measure pH with electrode]
    D --> E
    E --> F[Remove electrode immediately]
    F --> G[Wash electrode with distilled water]
    G --> H{Not in use?}
    H -- Yes --> I[Keep electrode immersed in distilled water]
    H -- No --> J[Proceed to next test]
    I --> J
    J --> K[Report pH to nearest 0.1 unit]

For detailed test methods and other parts, refer to IS 13435 series.

IS 13435 Part 4 — Apparatus & Test Procedure for pH Determination

Apparatus Specifications (Clause 1.1 & 5)

• pH Meter: Direct reading type conforming to IS 2711:1979, with glass electrode and suitable reference electrode.
• Glass Beaker: 100 ml capacity with cover and stirring rod.
• Wash Bottle: Filled with distilled water.
• Buffer Solutions: Prepared as per IS 3225:1965 for calibration.

Key Procedure Points (Clause 5)

• Use 50 ml sample in beaker; temperature maintained at 27 ± 5°C.
• For viscous samples, dilute 25 ml sample + 25 ml distilled water.
• After pH reading, electrodes must be immediately removed and washed.
• When idle, electrodes should be kept immersed in distilled water.

Reporting (Clause 6)

• pH value reported to nearest 0.1 pH units.

Summary Table: Apparatus & Conditions

flowchart TD
    A[Sample Preparation] --> B[50 ml sample in 100 ml beaker]
    B --> C{Viscous?}
    C -- Yes --> D[Dilute 25 ml sample + 25 ml distilled water]
    C -- No --> E[Proceed]
    D --> E
    E --> F[pH Measurement with pH Meter]
    F --> G[Remove electrodes immediately]
    G --> H[Wash electrodes with distilled water]
    H --> I[Store electrodes in distilled water when idle]
    I --> J[Report pH to nearest 0.1 unit]

This ensures accurate, standardized pH measurement of acrylic polymer waterproofing materials as per IS 13435 Part 4.

IS 13435 Part 4: Procedure for Determination of pH Value of Acrylic Based Polymer Waterproofing Materials

Key Procedure Steps (Clause 5.4 & related):

• Sample Preparation:

  • Use 50 ml of sample in a 100 ml glass beaker.
  • Adjust sample temperature to 27 ± 5 °C.
  • If sample is viscous, dilute 25 ml sample with 25 ml distilled water.

• Measurement:

  • Immerse glass (indicator) and reference electrodes in sample.
  • Measure potential difference using a pH meter (IS 2711:1979 compliant).
  • After reading, immediately remove electrodes and wash with distilled water.
  • When not in use, keep electrodes immersed in distilled water.

• Reporting:

  • Report pH value to the nearest 0.1 pH units.

Apparatus Required:

• pH meter with glass and reference electrodes
• 100 ml glass beaker with cover
• Wash bottle with distilled water
• Standard buffer solutions (prepared as per IS 3225:1965)

Summary Table: Sample Handling

flowchart TD
    A[Sample Collection] --> B[Adjust Temperature to 27±5°C]
    B --> C{Is sample viscous?}
    C -- Yes --> D[Dilute 25 ml sample with 25 ml distilled water]
    C -- No --> E[Use 50 ml sample directly]
    D --> F[Immerse electrodes]
    E --> F
    F --> G[Measure pH with pH meter]
    G --> H[Remove & wash electrodes immediately]
    H --> I[Report pH to nearest 0.1 unit]
    I --> J[Store electrodes in distilled water when idle]

This procedure ensures accurate, repeatable pH measurement of acrylic polymer waterproofing materials per IS 13435 Part 4

IS 13435 Part 4 — Presentation of Results for pH Determination

• Reporting Precision: pH values must be reported to the nearest 0.1 pH unit.
• Sample Handling: For viscous samples, dilute 25 ml sample + 25 ml distilled water before measurement.
• Electrode Care: Remove electrodes immediately after reading and wash. When idle, keep electrodes immersed in distilled water.
• Rounding Off: Follow IS 2:1960 for rounding numerical values.

Summary Table for pH Result Presentation

This ensures consistency, accuracy, and reproducibility in reporting pH values for acrylic polymer waterproofing materials.

flowchart TD
    A[Sample Preparation] --> B{Viscous?}
    B -- Yes --> C[Dilute 25 ml sample + 25 ml distilled water]
    B -- No --> D[Use sample as is]
    C --> E[Measure pH]
    D --> E
    E --> F[Record pH to nearest 0.1 unit]
    F --> G[Remove & wash electrodes immediately]
    G --> H[Store electrodes in distilled water when idle]

For detailed test methods, refer to IS 13435 Part 4 (1992).

IS 13435 Part 4: Notes and Precautions for pH Determination of Acrylic Based Polymer Waterproofing Materials

Key Points from Clause 5.4 and Related Clauses:

• Electrode Handling:

  • Remove electrodes immediately after pH reading.
  • Wash electrodes with distilled water to avoid contamination.
  • When not in use, keep electrodes immersed in distilled water.

• Sample Preparation:

  • For viscous samples, dilute 25 ml sample with 25 ml distilled water before testing.

• Result Presentation:

  • Report pH value to the nearest 0.1 pH units.

• Apparatus:

  • pH meter conforming to IS 2711:1979 with glass and reference electrodes.
  • Use buffer solutions prepared as per IS 3225:1965 for calibration.

Summary Table: Sample Handling and Electrode Care

Important Notes:

• Use freshly distilled water for washing and dilution.
• Ensure glassware is alkali-resistant.
• Calibrate pH meter with standard buffer solutions before use.

flowchart TD
    A[Start: Sample Preparation] --> B{Is sample viscous?}
    B -- Yes --> C[Dilute 25 ml sample with 25 ml distilled water]
    B -- No --> D[Use sample as is]
    C --> D
    D --> E[Measure pH with calibrated pH meter]
    E --> F[Remove electrodes immediately]
    F --> G[Wash electrodes with distilled water]
    G --> H{Not in use?}
    H -- Yes --> I[Store electrodes in distilled water]
    H -- No --> E
    I --> J[Report pH to nearest 0.1 units]

This ensures accurate, reliable pH measurement consistent with IS 13435 Part 4 requirements.