Select 350 Selective Silicate Adsorbent for Oils & Biodiesel
Select 350 Selective Silicate Adsorbent for Oils & Biodiesel - Pallet - 40 x 50lb bags is backordered and will ship as soon as it is back in stock.
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Bulk pricing (2+ pallets): 2–3 @ $3,749 ea • 4+ @ $3,449 ea. Live freight quotes at checkout.
| Minimum Qty | Discount |
|---|---|
| 2 + | $3,749.00 |
| 4 + | $3,449.00 |
Overview
Pure-Flo® Select 350 by Oil-Dri is a finely divided selective silicate adsorbent positioned for targeted reduction of soaps, phospholipid-related impurities, selected trace metals and other polar contaminants in compatible edible-oil, renewable-feedstock and biofuel-processing applications.
Unlike traditional bleaching earth, which is generally selected for broader color reduction and oil polishing, Select 350 is more naturally positioned as a pretreatment adsorbent. It can be evaluated ahead of bleaching, filtration, conversion or other downstream processing where specific contaminants may interfere with product quality, catalyst performance or process consistency.
For process-level guidance, see our Adsorbents for Biodiesel Feedstock Pretreatment , Bleaching Clays & Purification Adsorbents , and Adsorbents for Oil Purification & Refining .
Minimum order: 2 pallets.
- 2–3 pallets: $3,749 per pallet
- 4+ pallets: $3,449 per pallet
Bagged pallet configuration: 40 × 50 lb (22.68 kg) bags — 2,000 lb (approximately 907 kg) net per pallet.
Bulk format: 2,000 lb (approximately 907 kg) supersack available by request. Contact Sorbents Direct for current pricing and availability.
Freight is calculated at checkout using live LTL rates for eligible configurations.
Where Pure-Flo® Select 350 Fits
- Edible-oil pretreatment: Reduction of soaps, phospholipid-related impurities, selected trace metals and other polar contaminants before downstream refining or polishing.
- Biodiesel feedstock pretreatment: Treatment of compatible vegetable oils, recycled oils and other feedstocks where contaminant reduction may support more consistent downstream conversion.
- Pretreatment before bleaching: Selective removal of problem contaminants before a broader bleaching-earth step.
- Dry-treatment process evaluation: Adsorptive cleanup in compatible systems designed to reduce selected contaminants without relying exclusively on conventional washing steps.
- Industrial oil purification: Targeted treatment where soaps, phosphorus-related contaminants or trace metals affect downstream process performance.
- Feedstock conditioning: Preparation of oils for subsequent bleaching, filtration, refining, conversion or finishing operations.
Select 350 is not simply another bleaching earth.
Traditional bleaching clays such as Pure-Flo® B80, Supreme B81 and Supreme 55 are generally positioned around broader bleaching, color reduction and oil polishing.
Select 350 is more naturally positioned for targeted feedstock pretreatment before those broader purification steps.
Why Choose Select 350?
- Selective impurity reduction: Positioned around soaps, phospholipid-related contaminants, selected metals and other compatible polar impurities.
- Pretreatment utility: Can be evaluated before bleaching clay, filtration or downstream conversion.
- Process flexibility: Relevant to compatible edible-oil, renewable-feedstock, biodiesel and industrial-oil treatment systems.
- Fine powdered form: Provides close contact with the liquid during controlled mixing.
- Integrated-treatment potential: Allows processors to optimize selective-adsorbent dosage together with the downstream bleaching-earth or filtration step.
- Industrial packaging: Available in bagged pallets and 2,000 lb supersacks.
- Manufacturer-document support: Current technical and lot documentation can be requested for qualification.
Typical Reference Properties
| Product type | Selective silicate adsorbent |
|---|---|
| Primary function | Pretreatment and targeted reduction of soaps, phospholipid-related impurities, selected trace metals and other polar contaminants |
| Physical form | Fine mineral powder |
| Free moisture | Less than 5.0% by weight at 105°C |
| pH | 3.6 at 5% solids in deionized water |
| Tamped density | 37.0 lb/ft³ (approximately 593 g/L) |
| Particle size | 62% passing 325 mesh; less than 45 microns |
| Manufacturer | Oil-Dri Corporation of America |
Technical-data note: The reference values above are retained from previously supplied product information but have not yet been independently confirmed against a current publicly available lot-specific COA.
Confirm current manufacturer specifications before qualification, purchase or process design.
What Can Select 350 Help Reduce?
| Treatment Target | General Role | Important Considerations |
|---|---|---|
| Residual soaps | Core selective-pretreatment objective | Incoming soap concentration and feed chemistry influence required dosage. |
| Phospholipid-related impurities | Relevant pretreatment target | Actual phosphorus-related contaminant profile should be measured when downstream specifications are critical. |
| Selected trace metals | May support targeted reduction | Performance depends on the element, feedstock chemistry and treatment conditions. |
| Other polar impurities | Application dependent | Adsorption should be confirmed against the actual contaminant profile. |
| Color bodies | Not the primary positioning | Broader color reduction is generally more naturally associated with a bleaching-earth step. |
Important: Select 350 should be selected around the actual feed analysis and downstream process requirement rather than assumed to remove all oil impurities equally.
How Select 350 Fits Into a Treatment Process
| Process Stage | Potential Role |
|---|---|
| 1. Incoming oil or feedstock | Characterize soaps, phosphorus-related impurities, selected metals, moisture, acidity, color and other relevant feed properties. |
| 2. Select 350 pretreatment | Target compatible soaps, phospholipid-related contaminants, trace metals and other polar impurities. |
| 3. Bleaching-earth treatment | Where required, follow with broader color reduction, chlorophyll treatment and polishing. |
| 4. Filtration | Remove spent adsorbent and associated contaminants from the oil. |
| 5. Downstream refining or conversion | Continue toward the required finished-oil, biodiesel or other process specification. |
The exact treatment sequence depends on feedstock chemistry, equipment, contaminant profile and downstream process requirements.
Think treatment train - not single media.
A selective adsorbent can remove contaminants that are especially important to downstream processing, while a bleaching earth can then handle broader color and purification objectives. In some feeds, this staged approach may be more useful than asking one adsorbent to perform every treatment function.
Select 350 vs. Bleaching Earth
| Selection Factor | Pure-Flo® Select 350 | Traditional Bleaching Earth |
|---|---|---|
| Primary role | Selective feedstock pretreatment | Broader bleaching and oil polishing |
| Typical emphasis | Soaps, phospholipid-related impurities, selected metals and other polar contaminants | Color bodies, chlorophyll, oxidation products and broader compatible impurities |
| Typical process position | Before downstream bleaching, filtration or conversion | Bleaching / polishing stage |
| Is Select 350 a direct substitute? | No. The products perform different treatment roles and should be evaluated against the actual process. | |
Compare bleaching-earth options including Pure-Flo® B80, Supreme B81 and Supreme 55.
Select 350 vs. Select 450
| Selection Factor | Pure-Flo® Select 350 | Pure-Flo® Select 450 |
|---|---|---|
| Product family | Selective silicate adsorbent | Selective silicate adsorbent |
| General application area | Edible-oil, renewable-feedstock and compatible pretreatment applications | Particularly relevant to biodiesel and renewable-feedstock pretreatment based on current product positioning |
| Typical contaminant focus | Soaps, phospholipid-related impurities, selected metals and other polar contaminants | Similar selective-pretreatment contaminant classes; exact performance is grade dependent |
| Which is better? | Neither should be assumed universally superior. Compare current Oil-Dri guidance and representative trials using the actual feedstock. | |
Compare Pure-Flo® Select 450 →
Application & Trial Guidance
Appropriate Select 350 dosage depends on feedstock, incoming soap content, phosphorus-related impurity concentration, selected metal profile, moisture, mixing conditions, contact time, temperature, filtration equipment and downstream specifications.
- Begin with controlled bench trials using the actual oil or feedstock.
- Characterize the untreated feed before establishing the treatment target.
- Evaluate multiple Select 350 dosages rather than assuming one universal rate.
- When used before bleaching earth, optimize both adsorbent dosages together.
- Measure relevant contaminants before and after treatment.
- Evaluate filtration behavior, product retention and downstream performance along with contaminant removal.
- Confirm that the treated feed meets the actual downstream process or finished-product requirement.
No universal dosage is stated because treatment rate must be established through process testing and current manufacturer guidance.
Biodiesel & Renewable-Feedstock Pretreatment
Select 350 may be evaluated in compatible biodiesel and renewable-feedstock systems where soaps, phosphorus-related impurities, selected metals or other process-sensitive contaminants need to be reduced before downstream conversion or finishing.
The treatment objective should be defined from the actual feedstock analysis rather than assuming one universal impurity profile across vegetable oils, recycled oils, fats or other renewable feedstocks.
For a deeper process-level discussion, see: Adsorbents for Biodiesel Feedstock Pretreatment .
Packaging & Availability
| Package | Configuration |
|---|---|
| 2,000 lb (approximately 907 kg) | One pallet containing 40 × 50 lb (22.68 kg) bags |
| 2,000 lb (approximately 907 kg) | One bulk supersack |
- Minimum order: Two pallets for published bagged-pallet pricing
- Bagged material: Forty individual 50 lb bags per pallet
- Bulk material: Supersacks available by request, subject to current supplier availability
- Lead time: Confirmed at quotation or order placement
- Freight: Nationwide LTL shipping with live checkout rates for eligible configurations
- Volume purchasing: Contact Sorbents Direct for recurring supply, multi-pallet requirements or delivered pricing
Handling & Storage
- Store unused material in a dry, protected location.
- Keep bags or supersacks closed until needed.
- Minimize airborne dust during transfer, mixing and handling.
- Use appropriate ventilation and personal protective equipment as directed by the current SDS.
- Avoid contact with incompatible materials identified in current manufacturer documentation.
- Handle fresh and spent adsorbent according to the treated oil, facility procedures and applicable regulations.
Important: Review a current manufacturer SDS before handling or use. This product page does not replace formal safety documentation.
Shipping & Support
- Nationwide shipping: LTL freight service available throughout the United States.
- Freight options: Liftgate, delivery appointment and other accessorial services may be available.
- Bulk purchasing: Volume pricing and recurring-supply support are available for qualified industrial customers.
- Documentation assistance: Sorbents Direct can request current manufacturer documents before order placement.
- Technical assistance: Share feedstock data, contaminant levels, process flow and downstream targets for grade-selection guidance.
Why Buy Select 350 from Sorbents Direct?
Selective adsorbent selection is highly process dependent. Sorbents Direct helps industrial buyers compare Select 350 with Select 450 and Oil-Dri bleaching-earth grades based on the actual feedstock and treatment objective.
- Published multi-pallet pricing on qualifying bagged configurations
- Bagged and supersack formats for production-scale requirements
- Live LTL freight quotes at checkout on eligible shipments
- Manufacturer-document support including SDS, TDS and available lot documentation
- Grade-comparison support across Select 350, Select 450, B80, Supreme B81 and Supreme 55
- Application-focused guidance for pretreatment, bleaching and filtration workflows
- Bulk purchasing support for recurring and multi-pallet requirements
Need to compare the entire Oil-Dri purification family?
Browse Bleaching Clays & Purification Adsorbents to compare Select 350 with Select 450, B80, Supreme B81 and Supreme 55.
For process-level feedstock guidance, see Biodiesel Feedstock Pretreatment .
Documentation & Quality Support
Documentation requested for Select 350 may include:
- Safety Data Sheet (SDS)
- Technical Data Sheet or current product bulletin
- Certificate of Analysis, when available for the supplied production lot
- Packaging and freight information
- Manufacturer confirmation of current technical properties
- Product-selection and application assistance
Contact Sorbents Direct if documentation is required for evaluation, supplier qualification or purchase approval.
Visit our Documentation Center or contact Sorbents Direct to discuss feedstock, process conditions, packaging and documentation requirements.
Need Help Designing a Pretreatment Trial?
Adsorbent selection depends on feedstock, soap concentration, phosphorus-related impurities, selected metals, moisture, acidity, treatment temperature, contact time, filtration system and downstream specification. Sorbents Direct can help compare Select 350 with Select 450 and available Oil-Dri bleaching-earth grades for controlled evaluation.
Questions & Answers
What is Pure-Flo® Select 350?
Select 350 is a finely divided selective silicate adsorbent positioned for targeted pretreatment and impurity reduction in compatible edible-oil, biodiesel, renewable-feedstock and industrial-oil processes.
What impurities does Select 350 target?
Select 350 is positioned around soaps, phospholipid-related impurities, selected trace metals and other compatible polar contaminants that can interfere with downstream processing.
Is Select 350 a bleaching clay?
It is more accurately positioned as a selective silicate adsorbent for targeted pretreatment. Traditional bleaching earth generally has a broader emphasis on color reduction, chlorophyll and oil polishing.
When should Select 350 be used before bleaching earth?
It may be evaluated when soaps, phospholipid-related impurities, selected metals or other polar contaminants need targeted reduction before broader bleaching or downstream processing.
Can Select 350 be used in biodiesel processing?
Select 350 may be evaluated for pretreatment of compatible biodiesel feedstocks. Suitability depends on feedstock chemistry, contaminant levels, process configuration and downstream requirements.
What is the difference between Select 350 and Select 450?
Both belong to the selective-adsorbent family and can be evaluated for similar contaminant classes. Select 450 has particularly strong current positioning around biodiesel and renewable-feedstock pretreatment. The appropriate grade should be selected using current Oil-Dri guidance and comparative testing with the actual feedstock.
Should Select 350 replace B80, Supreme B81 or Supreme 55?
Not automatically. Select 350 is primarily positioned for selective pretreatment, while B80, Supreme B81 and Supreme 55 sit more naturally in the broad bleaching and polishing branch. They may be complementary rather than direct substitutes.
What dosage should I use?
There is no universal dosage. Establish treatment rate through controlled trials using the actual feedstock, contaminant profile, filtration system and downstream specifications.
What is the minimum order?
The current minimum order for published bagged-pallet pricing is two pallets, or 4,000 lb total.
How is each pallet configured?
Each bagged pallet contains forty 50 lb (22.68 kg) bags for a total net weight of 2,000 lb, or approximately 907 kg.
Is Select 350 available in supersacks?
Yes. A 2,000 lb supersack is available by request, subject to current supplier availability. Contact Sorbents Direct for pricing and freight.
Are the technical values on this page manufacturer verified?
The displayed reference values were retained from previously supplied product information, but Sorbents Direct has not yet independently confirmed them against a current publicly available Oil-Dri Select 350 TDS or lot-specific COA. Request current documentation before qualification or process design.
Is freight included in the pallet price?
No. Freight is separate and may be calculated at checkout using live LTL rates for eligible configurations.
What documentation is available?
Sorbents Direct can request current SDS, technical product information and available lot documentation from the supplier or manufacturer. Availability should be confirmed before purchase when documentation is required.
Related Products & Resources
Select 350 Selective Silicate Adsorbent for Oils & Biodiesel
