🏭 Sector-Specific Bentonite Testing Guide
Mandatory Tests, Standards and Acceptance Criteria
🛢️ Oil Drilling
API 13A Sec.9Mandatory Tests
- Viscosity (600/300 rpm)
- Filtration loss
- Gel strength (10 sec / 10 min)
- Moisture content
- 75μ sand (wet sieve analysis)
- pH measurement
Acceptance Criteria
600 rpm ≥ 30 cP | Filtration ≤ 15 mL | Moisture ≤ 13%
• Plastic viscosity: 300 rpm value
• Yield point: 600 rpm - 300 rpm
• Gel strength: 10 sec and 10 min values
• Yield point: 600 rpm - 300 rpm
• Gel strength: 10 sec and 10 min values
🚧 HDD (Horizontal Directional Drilling)
API 13A + HDDMandatory Tests
- 3 rpm viscosity (low-shear viscosity)
- Filtration loss
- Gel strength
Acceptance Criteria
3 rpm ≥ 8 cP | Filtration ≤ 12 mL
• Low-shear viscosity (3 rpm) critical for transportability
• Low filtration loss mandatory
• High suspension stability
• Low filtration loss mandatory
• High suspension stability
🏗️ Foundry
TSE 5360Mandatory Tests
- Green compression strength
- Green deformation
- Methylene blue index (MBI)
- Moisture content
Acceptance Criteria
Strength ≥ 0.7 N/cm² | Deformation ≥ 15%
• High MBI value (>100 meq/100g) preferred
• High plasticity index (PI > 100)
• Low iron content (Fe₂O₃ < %3)
• High plasticity index (PI > 100)
• Low iron content (Fe₂O₃ < %3)
💊 Pharmaceutical
TSE 10252, USPMandatory Tests
- pH measurement
- Arsenic determination
- Heavy metals (Pb, Cd, Hg, Cr)
- Microbiological analysis
- Swelling index
Acceptance Criteria
As < 3 ppm | Pb < 15 ppm | pH 9.5 - 10.5
• USP General Chapter <233> compliance
• Microbiological limits: TAMC < 1000 CFU/g
• High purity and swelling capacity
• Microbiological limits: TAMC < 1000 CFU/g
• High purity and swelling capacity
💄 Cosmetic
TSE 10252, ISO 16128Mandatory Tests
- pH measurement
- Heavy metals
- Microbiological analysis
- Viscosity
- Color and odor assessment
Acceptance Criteria
Pharma limits + Color/Cosmetic suitability
• ISO 16128 natural cosmetic standard
• Absence of allergen contamination
• Cosmetic-grade brightness and texture
• Absence of allergen contamination
• Cosmetic-grade brightness and texture
🐱 Cat Litter
Domestic Market StandardMandatory Tests
- Clumping test
- Moisture content
- Granulometry (particle size distribution)
Acceptance Criteria
Clumping > 90% | Dust < %5
• Rapid clumping (< 30 seconds)
• Hard clump structure (low breakage)
• Low dust ratio (respiratory health)
• Hard clump structure (low breakage)
• Low dust ratio (respiratory health)
🌾 Agriculture
TSE 5360Mandatory Tests
- CEC (Cation Exchange Capacity)
- pH measurement
- Moisture content
- Granulometry
Acceptance Criteria
CEC > 65 meq/100g | pH 6 - 8
• Neutral pH important for plant health
• High CEC nutrient retention capacity
• Suitable granulometry (0.5-2 mm)
• High CEC nutrient retention capacity
• Suitable granulometry (0.5-2 mm)
🌊 Dam/Environment
ASTM D5890, GRI-GM13Mandatory Tests
- Swelling index
- Plasticity index (PI)
- Permeability
Acceptance Criteria
Swelling > 25 mL/2g | PI > 100
• High swelling = low permeability
• Geosynthetic clay liner (GCL) suitability
• Long-term chemical stability
• Geosynthetic clay liner (GCL) suitability
• Long-term chemical stability
🍽️ Food
Turkish Food CodexMandatory Tests
- Arsenic determination
- Lead determination
- Microbiological analysis
- Crystal structure analysis (XRD)
Acceptance Criteria
As < 3 ppm | Pb < 10 ppm
• Food codex limits (EC 1881/2006)
• Montmorillonite purity
• No carcinogenic polycyclic aromatics
• Montmorillonite purity
• No carcinogenic polycyclic aromatics
📦 Desiccant (Moisture Absorber)
BS 7529Mandatory Tests
- Moisture adsorption capacity
- pH measurement
- Color stability
Acceptance Criteria
Adsorption > 20% | pH 5 - 8
• 25°C, 75% relative humidity for 24 hours
• Color change indicator (blue → pink)
• Dusting test (low abrasion)
• Color change indicator (blue → pink)
• Dusting test (low abrasion)
⚠️ Important Note: All sectoral tests must be performed under environmental conditions (temperature, humidity, pressure) specified in relevant standards and with calibrated equipment. Test results must be approved by accredited laboratories and retained for at least 5 years.
📋 Sectoral Test Procedures and Certificates
Contact us for detailed test protocols and accredited analysis reports specific to your industry.
📞 +90 530 321 4 999
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