TzeroLabs Contact
Our Services

Petroleum Testing Coordination, Cargo Inspection & Certification Support

We arrange and manage petroleum product inspection — from dip test scheduling and tank access coordination to laboratory follow-up, certificate assembly, and chain-of-custody documentation across the global supply chain.

Inspection Coordination Dip Test Certification HSE
Core service areas
Cargo Inspection
Lab Coordination
ESG & HSE
Documentation

Laboratory Testing Support

We coordinate petroleum product testing through accredited inspection agencies — arranging sample collection, method selection, laboratory submission, and result follow-up on your behalf.

  • Sample collection & chain-of-custody management
  • Agency selection & laboratory submission
  • Test method alignment (ASTM, API, ISO, EN standards)
  • Certificate of Analysis (COA) review & delivery

Cargo Inspection Coordination

We facilitate independent cargo inspections for petroleum product transactions — coordinating inspector access, timing, and documentation at load and discharge ports worldwide.

  • Load port & discharge port inspection arrangement
  • Quantity verification & ullage surveys
  • Inspector nomination through recognized agencies
  • Inspection report collection & review

Dip Test Coordination

We arrange and coordinate physical dip tests on storage tanks, shore tanks, and vessel tanks — scheduling access, supervising gauging, and managing measurement documentation.

  • Shore tank & vessel tank dip arrangement
  • Gauging supervision & witness coordination
  • Tank access scheduling & port liaison
  • Measurement record compilation & filing

Documentation & Certification Support

We coordinate the assembly, review, and delivery of all transaction documentation — ensuring certificates, reports, and compliance records are complete, accurate, and ready for use.

  • Certificate of Analysis (COA) coordination
  • Certificate of Origin & quantity report assembly
  • Chain-of-custody record management
  • Regulatory & compliance documentation review

Port-Based Field Support

We provide on-the-ground coordination at loading and receiving ports — liaising with terminals, surveyors, and shipping agents to ensure smooth inspection logistics and timely cargo release.

  • Terminal & surveyor liaison at port
  • NOR, LOI, and port documentation coordination
  • Sampling witness & dispatch supervision
  • Pre-shipment & pre-arrival inspection scheduling

Advisory & Coordination Support

We advise buyers, sellers, traders, and logistics teams on inspection requirements, testing obligations, and documentation best practices — helping reduce transaction risk and avoid cargo disputes.

  • Inspection scope and agency selection guidance
  • Transaction documentation review & gap analysis
  • HSE and petroleum handling compliance support
  • Vendor qualification & coordination process review

Industries we serve

We work across the full petroleum supply chain — from upstream production through refining, trading, marine transport, and end-user delivery.

Refineries & Tank Farms Oil Traders & Brokers Shipping & Marine Logistics & Freight
Trading & Brokerage
  • Pre-shipment inspection coordination
  • COA & certificate review support
  • Cargo dispute documentation
Refining & Blending
  • Product quality verification
  • Blending spec confirmation
  • Release-for-shipment documentation
Marine & Shipping
  • Bunker survey & fuel quality checks
  • Vessel tank dip & ullage coordination
  • Cargo receipt documentation
HSE & Compliance
  • Petroleum handling safety coordination
  • Environmental compliance records
  • Audit-ready documentation packages

How we work

A clear, structured coordination process from initial inquiry through final document delivery — so every inspection engagement is on-spec, on time, and fully documented.

  1. Intake & Scope: We confirm product, quantity, port, and inspection requirements with the client.
  2. Agency Nomination: We identify and engage an appropriate recognized inspection agency for the assignment.
  3. Access & Scheduling: We coordinate terminal access, dip test timing, and inspector attendance.
  4. Inspection & Sampling: The nominated agency conducts the inspection; we supervise and witness as required.
  5. Reporting & Delivery: We compile, review, and deliver all inspection reports, COAs, and transaction documents.
Audit-ready
Full inspection records, COAs, and chain-of-custody files organized for due diligence.
Independence
We act as a neutral coordinator — aligned to client interests, not agency interests.
Transparency
Every inspection engagement is fully traceable — from agency nomination to final certificate.
Outcomes
Faster cargo release, fewer disputes, and complete documentation for every transaction.

Engagement Packages

Select the package that fits your transaction scope and port requirements. All packages include agency coordination, inspection supervision, and document delivery.

Single Cargo
$0k
From — single cargo, one port
  • One inspection assignment
  • Agency nomination & supervision
  • COA & report delivery
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Most popular
Multi-Cargo
$0k
From — multiple cargoes, multi-port
  • Load & discharge port coverage
  • Multi-agency coordination
  • Full documentation package
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Ongoing Retainer
Custom
Recurring coordination — volume pricing
  • Dedicated coordination support
  • Priority agency engagement
  • Monthly reporting & account review
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Frequently asked questions

If you don’t see your question here, we’re happy to discuss your specific product, port, and inspection requirements.

No. Tzero Labs is a coordination and inspection management company. All physical testing is performed by accredited inspection agencies — including SGS, Intertek, Bureau Veritas, Cotecna, and Saybolt — selected and engaged on behalf of our clients based on the product, port, and inspection requirement.

We coordinate inspections for a wide range of petroleum products including EN590 diesel, Jet A-1, D6 fuel oil, crude oil, marine bunker fuel, LPG/LNG, renewable diesel, naphtha, and other refined petrochemicals. If you have a specific product inquiry, contact us to confirm coverage.

Depending on the scope, clients typically receive an inspection report, Certificate of Analysis (COA), quantity survey report, and chain-of-custody records. We coordinate the assembly and delivery of all required documents and can advise on what documentation is appropriate for your specific transaction type.

Yes. While Tzero Labs is a United States-based company, we coordinate petroleum inspections at ports across multiple regions by working through recognized international inspection agencies with established global networks. Contact us to confirm coverage at your specific port or terminal.

Discuss your inspection requirements

Tell us about your product, port, and transaction timeline. We’ll confirm the right inspection scope, agency, and documentation package for your needs.