water-soluble type wood preservatives, Part 1: Acid-copper-chrome (ACC) preservative

IS 10013 Part 1 - Scope Summary & Key Specifications

Scope (from IS 10013 Part 1 - 1981):

• Specifies requirements for Acid-Copper-Chrome (ACC) preservative, a water-soluble (fixed) type wood preservative.
• Intended to augment durability of less durable timbers by preservative treatment.
• Aligns with IS 401-1981 (Code of Practice for Timber Preservation).
• Emphasizes quality of preservative for effective absorption and penetration.
• Supports economic utilization of timber resources.

Key Specifications

Units (SI System Used)

Notes:

• ISI Certification Mark may be used under ISI rules.
• Results/tests rounded as per IS 2-1960.
• Scope covers preservative formulation and quality control for timber treatment.

flowchart TD
    A[Timber] --> B[Preservative Treatment]
    B --> C[Acid-Copper-Chrome (ACC) Preservative]
    C --> D[Improved Durability]
    D --> E[Extended Service Life]

Summary: IS 10013 Part 1 defines the formulation and quality requirements of ACC preservative for wood, ensuring enhanced timber durability through standardized chemical composition and treatment processes.

IS 10013 (Part 1) – Composition & Properties of Acid-Copper-Chrome Preservative

1. Composition (Nominal proportions by weight)

2. Specifications

• Minimum percentage of each ingredient must not be less than above proportions (Clause 2.1.1).
• Quality and sampling procedures are per TS: 2753 (Part I) - 1964.
• Analysis methods for copper, chromium, arsenic, etc., are detailed in IS 10013 Part 1.

3. Notes

• The preservative is an acid-copper-chrome (ACC) formulation widely used for timber treatment.
• Proper chemical analysis ensures effective wood preservation and compliance with standards.

flowchart LR
    A[Chromic acetate/Boric acid 5%] --> C[Preservative Mix]
    B[Copper sulphate 50%] --> C
    D[Sodium or Potassium dichromate 45%] --> C
    C --> E[Acid-Copper-Chrome Preservative]

This formulation ensures fungicidal and insecticidal protection for treated timber as per IS 10013 (Part 1).

IS 10013 Part 1 - Sampling Key Points

1. Sampling Procedure (Clause 3.1):

   • Samples must be taken from a requisite number of drums from a single supply batch.
   • Follow random sampling methods as per IS 4905-1968.

2. Chemical Analysis (Clause 4.1):

   • Analyze preservative solution ingredients according to IS 2753 (Part 1)-1964.
   • Ensure chemical proportions comply with Clauses 2.1 and 2.1.1 of IS 10013.

3. Marking (Clause 5.1.1):

   • Containers may bear the ISI Certification Mark, indicating compliance with IS standards and quality control.

Sampling Summary Table

Important Notes:

• Sampling ensures representative quality check of preservative solutions.
• Chemical estimation methods are standardized for accuracy.
• ISI Mark guarantees product conformity under ISI supervision.

flowchart TD
    A[Supply Batch] --> B[Random Sampling (IS 4905)]
    B --> C[Sample Collection from Drums]
    C --> D[Chemical Analysis (IS 2753)]
    D --> E{Compliance Check}
    E -->|Yes| F[Mark with ISI Certification]
    E -->|No| G[Reject / Reprocess]

This process ensures quality and consistency in preservative solutions per IS 10013 Part 1.

IS 10013 (Part 1) - Chemical Analysis of Preservative Solution

Key Specifications (Clause 2.1 & 2.1.1)

• The preservative is an acid-copper-chrome formulation.
• The percentage of each ingredient shall not be less than the values above.
• Sodium or potassium dichromate can be used interchangeably.

Chemical Analysis Method (Clause 4.1)

• Follow IS 2753 (Part 1) - 1964, Clause 3.4 for estimation methods.
• Analysis includes copper, arsenic, chromium, zinc, boron, creosote, and fuel oil.
• Sampling should be random as per IS 10013 Part 1 guidelines.

Summary of Steps for Chemical Analysis

flowchart TD
    A[Sampling of Preservative Solution] --> B[Prepare Sample as per IS 2753]
    B --> C[Estimate Copper Content]
    B --> D[Estimate Chromium Content]
    B --> E[Estimate Arsenic, Zinc, Boron]
    B --> F[Estimate Creosote & Fuel Oil]
    C --> G[Compare with Minimum %]
    D --> G
    E --> G
    F --> G
    G --> H{Complies with IS 10013?}
    H -->|Yes| I[Accept Batch]
    H -->|No| J[Reject or Reprocess]

Note: Always round off numerical values as per IS 10013 rules before reporting results.

Marking Requirements as per IS 10013 Part 1 (Clause 5.1)

Each container must be legibly marked with the following:

• Manufacturer's name or trade-mark
• Date of manufacture
• Percentage of dry active ingredients

Additional Marking Notes (Clause 5.1.1)

• Containers may also bear the ISI Certification Mark.
• The ISI Mark assures compliance with the standard, backed by inspection, testing, and quality control by ISI.
• Use of ISI Mark is regulated under the Indian Standards Institution (Certification Marks) Act.

Summary Table for Marking Information

Important Notes

• The percentage of active ingredients must meet or exceed minimum values specified in Clause 2.1.1.
• Marking must be clear and durable to ensure traceability and quality assurance.

If you need details on minimum percentages of preservatives or rounding rules, please specify.