Ortho phosphoric acid, also known as phosphoric acid (H₃PO₄), is an essential chemical widely used in fertilizer, food processing, and industrial applications. To ensure product quality, safety and compliance, manufacturers and importers of ortho phosphoric acid in India must obtain BIS certification as per Indian Standard IS 798:2020.
What Is BIS Certification?
The Bureau of Indian Standards is the national quality certification body of India responsible for maintaining the quality and safety standards of products sold or imported into India.
BIS certification confirms that a product meets the required Indian Standard specifications for safety, performance and reliability.
For chemical products like ortho phosphoric acid, BIS ensures:
- Correct concentration and purity level
- Controlled impurities
- Safe handling and packaging
Read More: Introduction To Bureau Of Indian Standards
Applicable Standard
IS 798:2020 – Ortho phosphoric acid – Specification
This standard covers the requirements, sampling and test methods for ortho phosphoric acid. It specifies acceptable limits for:
- Purity (as H₃PO₄)
- specific gravity
- Chloride and sulphate content
- heavy metal impurities
- form and color
The product must conform to these quality standards before a BIS license can be granted.
Who Needs BIS Certification for Ortho Phosphoric Acid?
The following entities are required to obtain BIS certification before manufacturing or importing ortho phosphoric acid in India:
- Indian manufacturer producing ortho phosphoric acid for domestic sales.
- Foreign manufacturers exporting to India (under FMCS – Foreign Manufacturers Certification Scheme).
- Importers or traders dealing in packaged chemical supplies for industrial or laboratory use.
Types of BIS Certification Schemes Applicable
- For Indian Manufacturers:
Certification is issued under the normal process (ISI Mark Scheme) or the simplified process of BIS.
- For foreign manufacturers:
The product must be registered under the Foreign Manufacturers Certification Scheme (FMCS), which allows the use of the ISI mark on products made outside India.
Step-by-Step Process for BIS Certification For Ortho Phosphoric Acid
Below, we mentioned steps to obtain BIS certificate for ortho-phosphoric acid
Step 1: Identify the standard and product category: Confirm that your product falls under IS 798:2020. If you produce different grades or concentrates, each may require different evaluation.
Step 2: Filing the Application: Submit your online application on BIS Manakonline portal (www.manakonline.in)
) with details of your factory, brand name and testing facilities.
Step 3: Product Testing: Send the product samples to a BIS-accredited laboratory for testing as per the methods specified in IS 798:2020.
Step 4: Inspection and Verification: A BIS inspection officer visits your manufacturing site to verify the quality control process, testing equipment, raw materials and production capacity.
Step 5: License Grant: After successful testing and inspection, BIS issues ISI License, which authorises the manufacturer to use the Standard Mark (ISI Mark) on product packaging.
Read More: Process for getting BIS for Certification
Documents Required for BIS Certification For Ortho Phosphoric Acid
Below, we mentioned required documents for BIS certification for ortho-phosphoric acid
- Factory registration and incorporation certificates
- Test report from a BIS-recognised laboratory
- List of manufacturing equipment and quality control instruments
- Process flow diagram
- Packaging and labelling details
- Trademark registration or authorisation letter (if applicable)
- Details of authorised signatory and manufacturing location
Read More: Documents Required For BIS Registration
Validity and Renewal of BIS License
- The initial license is valid for 2 years.
- Renewal can be done for up to 5 years based on continued compliance.
- Regular surveillance audits and product tests are conducted by BIS to maintain conformance.
Key Benefits of BIS Certification for Ortho Phosphoric Acid
Below we mentioned key benefits of BIS certificate for ortho phosphoric acid
- Regulatory Compliance: Legal requirement under Indian Standards.
- Better market access: ISI mark increases the acceptability of the product among buyers.
- Enhanced Reliability: Ensures confidence in industrial and food-grade applications.
- Export Competitiveness: Supports global recognition of Indian made products.
- Rejections and complaints reduced: Quality consistency reduces customer problems.
Penalties for Non-Compliance
Selling or manufacturing Ortho Phosphoric Acid without BIS certification is a violation of the BIS Act, 2016, which may result in:
- Seizure of goods
- Suspension or cancellation of license
- Monetary fines
- Legal prosecution
Hence, timely compliance is crucial to avoid regulatory risks.
How ELT Corporate Can Help
Navigating BIS certification for chemicals can be complex — involving testing, documentation, and coordination with BIS officers.
At ELT Corporate Pvt. Ltd., our team of BIS consultants helps you with:
- End-to-end documentation
- Product testing coordination
- Application submission
- Inspection preparation and follow-up
- License grant and renewal support
Whether you’re a domestic manufacturer or a foreign exporter, we ensure a smooth certification process for Ortho Phosphoric Acid (IS 798:2020).





