BIS Certification for Ether IS 336: 1973

• Purity and composition – ensuring the oil is free from harmful impurities
• Viscosity requirements – to provide effective lubrication
• Flash point and safety parameters – to minimize fire hazards
• Acidity and stability – to ensure longer shelf life and performance
• Moisture content – to prevent corrosion and damage to machinery

• R (Required): Test must be conducted in the manufacturer’s in-house laboratory
• S (Subcontracting Allowed): Test can be conducted in a BIS-recognized or NABL-accredited external laboratory

• Diethyl Ether Composition (R) – Manufacturer must ensure the product primarily consists of diethyl ether as per standard requirements
• Stabilizer Content Check (R) – If stabilizer is added, it must not exceed 0.002% (m/v) and must be declared on the label

• Visual Inspection (R) – Ensures clarity and absence of impurities or suspended matter
• Odour Test (R) – Confirms characteristic ether smell without any abnormal odour Chemical Property Tests
• Solubility Test (R) – Ensures proper solubility in specified solvents
• Relative Density Test (R) – Measures density at 20°C to confirm standard compliance

• Peroxide Content Test (R) – Detects presence of harmful peroxides for safety
• Residue on Evaporation (R) – Ensures minimal non-volatile impurities
• Methyl Alcohol Test (R) – Confirms absence or permissible limits of methanol
• Aldehydes and Acetone Test (R) – Detects presence of unwanted organic impurities
• Sulphurous Acid and Free Acids Test (R) – Ensures product is free from acidic contamination

• Distillation Range Test (R) – Verifies boiling range consistency of ether Packaging and Marking Requirements
• Standard Marking (R) – Each container must carry the BIS Standard Mark
• Labelling Details (R) – Must include BIS Licence Number and BIS website (www.bis.gov.in)
• Flammable Warning Label (R) – Each container must display “FLAMMABLE” with appropriate hazard symbol

• Control Unit Testing (R) – Each batch (same grade, raw material, and production day) is tested as one unit
• Test Records Maintenance (R) – Manufacturer must maintain proper testing records for conformity
• Calibration of Equipment (R) – Regular calibration plan must be implemented for all testing instruments

• Solvent Grade – Used for industrial and laboratory applications
• Anaesthetic Grade – Used for medical purposes

The BIS certification process ensures that Ether (Diethyl Ether) complies with the required quality, purity, and safety standards as specified under IS 336:2021. This certification is granted under Scheme-I (ISI Mark Scheme) by the Bureau of Indian Standards and involves the following steps:

1. Online Registration: Manufacturers must register on the BIS Manak Online Portal by submitting details such as company information, manufacturing unit address, and product specifications. Foreign manufacturers are required to appoint an Authorized Indian Representative (AIR).
2. Testing at BIS-Approved Laboratory: Samples of Ether are tested in BIS-recognized laboratories to evaluate parameters such as purity, acidity, residue on evaporation, water content, and other chemical properties.
3. Application Submission: The manufacturer submits the BIS application along with test reports, product formulation details, manufacturing process, raw material information, and quality control documents. AIR-related documents must be included for foreign applicants.
4. Factory Inspection: BIS officials conduct a detailed inspection of the manufacturing facility to verify production capability, storage conditions (due to high flammability of ether), in-house testing facilities, and quality control systems.
5. Grant of BIS License: After successful verification of documents, test reports, and factory inspection, BIS grants the license under Scheme-I (ISI Mark Scheme).
6. Use of ISI Mark: Once the license is granted, manufacturers are authorized to affix the ISI Mark on Ether containers or packaging along with the CM/L number, indicating compliance with IS 336:2021 and ensuring product safety, quality, and reliability.