Quality Assurance

Quality Standards & Industrial Applications

Every parameter of Bleach Master is tested in our in-house laboratory before dispatch. Here's what our numbers mean — and why they matter for your refining operation.

Quality Parameters

The Numbers That Drive Performance

Each quality parameter is not arbitrary — it directly impacts your refining process economics. Here's what each one means.

75%
Bleachability (min)

Bleachability measures how effectively the earth removes colour from a standard rapeseed oil test. A higher percentage means darker oils can be refined to a lighter colour using less product — reducing dosage requirements and cost per tonne of oil processed.

290–310
Surface Area (m²/g)

Surface area determines adsorption capacity. Our acid activation process creates a network of pores in the clay, expanding surface area to 290-310 m²/g. Higher surface area means more binding sites for pigments and impurities — directly improving bleaching efficiency.

≤ 20%
Oil Retention (max)

Oil retention is the % of oil that remains trapped in spent bleaching earth after filtration. At ≤20%, Bleach Master ensures at least 80% of absorbed oil is recovered. For a refinery processing 100 tonnes/day, even a 2% improvement in oil retention saves lakhs of rupees annually.

4.0
pH (2% suspension)

pH determines the acidity of the clay after activation. At pH 4.0, Bleach Master strikes the optimal balance — acidic enough for effective chlorophyll and carotenoid removal, but not so acidic that it breaks down oil quality or causes equipment corrosion. Critical for food-grade processing.

Edible Oil Applications

Application by Oil Type

Each oil type has distinct bleaching challenges. Here's how Bleach Master addresses each one.

Oil Type
Primary Impurities Removed
Typical Dosage
Soybean Oil
Chlorophyll, carotenoids, phospholipids, soaps
0.5 – 1.5%
Palm Oil (CPO)
Carotenes, phospholipids, oxidation products
0.8 – 2.0%
Rice Bran Oil
Waxes, oryzanol, pigments, soaps
1.0 – 2.5%
Sunflower Oil
Chlorophyll (primary concern), carotenoids
0.3 – 1.0%
Peanut Oil
Red pigment bodies, phospholipid residues
0.5 – 1.2%
Industrial / Used Oil
Oxidation products, acids, colour bodies
2.0 – 5.0%

* Dosage ranges are indicative. Actual requirements depend on crude oil quality, process conditions, and target colour specifications. Contact our technical team for application-specific guidance.

FAQ

Frequently Asked Questions

What is activated bleaching earth used for?
Activated bleaching earth is used in edible oil refining to remove colour pigments (carotenoids, chlorophyll), phospholipids, soaps, oxidation products, and trace metals from crude oils like soybean, palm, rice bran, sunflower, and peanut oil. It is also used in industrial oil regeneration.
What is the bleachability of Bleach Master?
Bleach Master has a minimum bleachability of 75%, tested and verified by our in-house QC laboratory for every production batch before dispatch.
What is the difference between activated and natural bleaching earth?
Natural bleaching earth is mined and dried without chemical treatment. Activated bleaching earth undergoes acid activation (usually with sulphuric acid), which increases its surface area from ~50 m²/g to 290-310 m²/g — dramatically improving adsorption capacity. Activated earth is far more effective for edible oil refining.
Do you supply activated bleaching earth across India?
Yes, we supply Bleach Master to edible oil refineries across India. Our proximity to Mundra and Kandla ports enables efficient pan-India delivery by road and rail.
What is the oil retention rate of Bleach Master?
Bleach Master has a maximum oil retention of 20%, meaning at least 80% of oil trapped in the spent clay is recoverable through press filtration — minimising your refining loss per cycle.
What is the pH of your bleaching earth?
Bleach Master has a pH of 4.0 measured as a 2% aqueous suspension. This optimal acidity enables effective chlorophyll and carotenoid removal while ensuring the finished oil meets food-grade quality standards.
Can you provide technical support for dosage optimisation?
Yes. Our technical team provides dosage recommendations, troubleshooting assistance, and application consulting based on your specific oil type, crude quality, process conditions, and target colour specifications. Contact us with your refinery details.
What packaging options are available?
Bleach Master is available in standard 25kg multi-wall paper bags, 500kg FIBC jumbo bags, and bulk tanker supply for large refineries. Custom packaging requirements can be discussed with our sales team.
Can bleaching earth be used for industrial oil refining?
Yes, activated bleaching earth is also used for regenerating used industrial oils, transformer oils, and lubricants by adsorbing oxidation products, acids, and colour bodies — restoring them to reusable quality specifications.
Do you offer sample orders for evaluation?
Yes, we offer trial samples of Bleach Master for qualified refineries. Contact us with your application details and we will arrange a sample dispatch with our technical datasheet.

Need technical guidance for your oil type?

Our team provides application-specific dosage recommendations and support.

Talk to Our Team