Unified Certificate of Analysis (COA) — Rubber & Plastics Chemicals
Template for accelerators, anti-scorch agents, antioxidants, fillers, plasticisers, resins, masterbatches · Document ref: GBL-COA-RC · Effective 2026-10-18
This is the unified COA template for the rubber and plastics chemical families. Each shipment is accompanied by a
per-lot COA stating the measured values for that batch. The table below lists the common test items and their typical
acceptance ranges; the actual lot results are filled in on the batch document.
1. Identification (per lot)
| Product / SKU | _______________ (as agreed in Proforma Invoice) |
|---|
| Lot / Batch No. | _______________ |
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| Manufacture date | _______________ |
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| Net weight | _______________ |
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2. Common Test Items & Typical Acceptance
| Appearance | Per product specification (powder / granule / pellet / flake / liquid) |
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| Assay / active content | Typical ≥ 97% for accelerator grades; per product spec for others |
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| Moisture | ≤ product specification (commonly ≤ 0.5% – 1.0%) |
|---|
| Heating loss | Within industry-standard limit for the grade |
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| Ash content | Within product specification |
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| Sieve residue (residue on sieve) | Per mesh specification |
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| Particle size / pellet hardness | Where applicable, per product spec |
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| Specific gravity / density | Where applicable, per product spec |
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3. Packing & Marking
| Packing | 25 kg kraft / PP bag with PE liner; jumbo 500–1000 kg where applicable |
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| Marking | Product name, lot No., net weight, and handling note on each unit |
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Result basis: Values shown on the delivered batch COA are measured at the manufacturing site's QC laboratory.
Independent / third-party testing is available on request at the buyer's cost. Carbon black and filler grades additionally report
iodine number and DBP absorption where applicable.
Disclaimer: This unified template describes the common test framework. The binding results are those on the per-lot COA issued with the
shipment. GlobalB2B is the export trading platform; manufacturing and QC are performed by the designated supplier shown on each product
page. No result herein should be read as a guarantee beyond the delivered batch's measured values.