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Inventory Ready
Editorial status
Listed · source-checked
Last reviewed
Jun 24, 2026
Next review due
Jun 24, 2027
Commercial relationship
Listed editorially
Challenge window
Self-reported certifications labeled

INGREDIENT SUPPLIERS

Gustav Heess Oleochemische Erzeugnisse GmbH

Gustav Heess is a German manufacturer and supplier of vegetable oils and fats for the food, dietary-supplement, cosmetic, and pharmaceutical industries, headquartered in Leonberg with production at Caloy and Bischofswiesen. The company offers cold-pressed and refined oils in both conventional and certified-organic grades (including black cumin, hemp, MCT, evening primrose, and sesame oils) and operates an ISO/IEC 17025-accredited fat-analysis laboratory under an ISO 9001 quality-management system. It supplies oil and fat raw materials on a B2B basis.

Directory Listing · Certifications Confirmed

One or more certifications independently confirmed via public registries.

What this means →

Leonberg, Baden-Wurttemberg

MOQ
Not publicly disclosed
LEAD TIME
Not publicly disclosed
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§1Editorial assessment

Gustav Heess is a German manufacturer and supplier of vegetable oils and fats for the food, dietary-supplement, cosmetic, and pharmaceutical industries, headquartered in Leonberg with production at Caloy and Bischofswiesen. The company offers cold-pressed and refined oils in both conventional and certified-organic grades (including black cumin, hemp, MCT, evening primrose, and sesame oils) and operates an ISO/IEC 17025-accredited fat-analysis laboratory under an ISO 9001 quality-management system. It supplies oil and fat raw materials on a B2B basis.

Ingredient SourcingCOA (Certificate of Analysis)NOP (National Organic Program)Identity Testing

§2Our review

The six checks in our review, applied before any name appears in the directory. Each check is auto-derived from public evidence on this profile.

Independent confirmation: warn.
Sources we traced: miss.
How recent: pass.
Right to respond: pass.
What they told us: pass.
What we don’t know: miss.

§3Certifications

1 of 3 certifications independently confirmed. What this means

USDA Organic(Confirmed)ISO 9001(Self-Reported)ISO/IEC 17025(Self-Reported)

§4Capability matrix

PRODUCT TYPES
Organic Vegetable Oils · Cold-Pressed Oils · Refined Oils and Fats · MCT Oil · Specialty Seed Oils
CAPABILITIES
Oil and Fat Manufacturing · Cold Pressing and Refining · Organic-Grade Production · In-house Fat-Analysis Laboratory

§5Sources

Dietary supplement manufacturers must comply with 21 CFR Part 111 (Current Good Manufacturing Practice for dietary supplements). This includes requirements for personnel, facilities, equipment, production, laboratory operations, and record-keeping.

For the check-by-check breakdown that produces this vendor's score, see our scoring framework. The connection map between Gustav Heess Oleochemische Erzeugnisse GmbH and other vendors, capabilities, and certifications is in the manufacturer atlas.

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Educational information only. Not legal, regulatory, or professional advice. Inventory Ready provides independent assessments based on publicly available information. See Terms for details.