How to Read a Coconut Sugar COA: What a Valid Certificate Must Contain
Direct answer
What must a valid coconut sugar certificate of analysis contain?
A valid coconut sugar certificate of analysis names the laboratory and its accreditation, the lot it covers, and for each parameter the result, the unit, the test method and the limit it was judged against. The core lines are moisture, ash and sucrose, then heavy metals and microbiology. A line without a method or a limit tells you nothing you can check.
The checklist below works on any supplier’s certificate, ours included. Our own limits are on bulk coconut sugar quality and handling, the page this one belongs to.
The required lines
Check the certificate against this list before you read a single result.
The buyer question, answered
| Line | What it must show |
|---|---|
| Laboratory | Name, address and accreditation to ISO/IEC 17025 |
| Report identity | A report number, the date of issue and a named signatory |
| Sample and lot | The product name and form, the lot number, and the dates the sample was taken and tested |
| Moisture, ash, sucrose | For each: result, unit, test method and the specification limit |
| Heavy metals | Each metal tested, its result and unit, and the method |
| Microbiology | Each organism tested, for example Salmonella, with result, unit and method |
| Verdict | Whether each result meets the specification it was tested against |
ISO/IEC 17025 is the standard that “sets out requirements for the competence, impartiality, and consistent operation of laboratories”, and accreditation bodies use it to assess and accredit them (ISO, ISO/IEC 17025:2017, as read 1 November 2026).
The lot number is the line that ties a certificate to a bag. For pre-packaged food, each container is to be marked “to identify the producing factory and the lot” (Codex Alimentarius, CXS 1-1985, section 4.6, as read 1 November 2026). Whatever the pack, the lot on the certificate should be the lot on the bags you received.
How to read each line
| Line | What it tells you | What to ask for |
|---|---|---|
| Moisture | The water left in the sugar, by weight | The method, and the limit on your specification sheet |
| Ash | The mineral residue left after the sample is burned | The method, and the limit it was judged against |
| Sucrose | The main sugar in coconut sugar | The method; a sugar profile if you also need glucose and fructose |
| Heavy metals | Which metals were tested, each in mg/kg | The limit each result was judged against, named on the report |
| Microbiology | Which organisms were tested, and the count or presence found | The method and the sample size for each test |
| Accreditation | Whether the laboratory is accredited | Whether each test on this report falls under that accreditation |
What these lines cannot show is what was added. Analysing 107 coconut blossom sugar samples bought in shops, online and from producers and traders, Wrage et al. found the product “may contain gluten, starch, an addition of sugars from C4 plants, and coconut or palm oil” (Wrage et al., LWT, 2019, abstract as read 1 November 2026). A certificate limited to moisture, ash and sucrose is not built to detect those additions, so ask the laboratory which test covers each one, by name.
Tests EU buyers add
Each line below can be written into a specification for the EU market, with the rule behind it.
- Pesticide residues. Where no maximum residue level is set for a processed food, it takes the level of the product it is made from, “taking into account changes in the levels of pesticide residues caused by processing” (EUR-Lex, Regulation (EC) No 396/2005, Art. 20(1), as read 1 November 2026). Where no specific level is set at all, the default is 0.01 mg/kg (Art. 18(1)(b)). Ask for the substances the screen covers and its limit of quantification.
- Chlorate. Chlorate is “formed as by-product resulting from the use of chlorine disinfectants in food and drinking water processing”, and Regulation (EU) 2020/749 set maximum residue levels for it under Regulation (EC) No 396/2005 (EUR-Lex, Regulation (EU) 2020/749, as read 1 November 2026).
- Acrylamide, for your own product. Acrylamide forms from asparagine and sugars in certain foods “when prepared at temperatures typically higher than 120 °C and low moisture” (EUR-Lex, Regulation (EU) 2017/2158, as read 1 November 2026). The rule covers the foods it lists, among them bread, breakfast cereals and fine bakery wares (Art. 1(2)), and their makers run their own sampling and analysis (Art. 4(1)). Coconut sugar is not on that list; if you make one of those foods, you set the test.
COA questions
Does a COA prove the sugar has not been adulterated? Not on moisture, ash and sucrose alone. A study of 107 coconut blossom sugar samples found the product may contain gluten, starch, added sugars from C4 plants, and coconut or palm oil (Wrage et al., LWT, 2019, abstract as read 1 November 2026). Ask the laboratory which test covers each one.
What does ISO/IEC 17025 accreditation tell me? That an accreditation body has assessed the laboratory against the standard for the competence, impartiality and consistent operation of testing laboratories (ISO, ISO/IEC 17025:2017, as read 1 November 2026). Ask whether each test on the report falls under that accreditation.
Should the lot number on the COA match the bags? Yes. The lot is what ties a certificate to the goods. For pre-packaged food, each container is to be marked to identify the producing factory and the lot (Codex Alimentarius, CXS 1-1985, section 4.6, as read 1 November 2026).
Which EU pesticide limit applies when no specific level is set? For products covered by Annex I of Regulation (EC) No 396/2005 with no specific maximum residue level, the default is 0.01 mg/kg (EUR-Lex, Art. 18(1)(b), as read 1 November 2026).
Sources
- International Organization for Standardization (ISO) · ISO/IEC 17025:2017 — General requirements for the competence of testing and calibration laboratories · standards-body · fetched
- FAO / WHO Codex Alimentarius Commission (FAO Knowledge Repository) · General Standard for the Labelling of Pre-packaged Foods (CXS 1-1985) · standards-body · fetched
- Wrage, Burmester, Kuballa and Rohn — LWT 112 (2019) 108227, Elsevier · Coconut sugar (Cocos nucifera L.): Production process, chemical characterization, and sensory properties · peer-reviewed · fetched
- Publications Office of the European Union (EUR-Lex) · Regulation (EC) No 396/2005 on maximum residue levels of pesticides in or on food and feed of plant and animal origin · government · fetched
- Publications Office of the European Union (EUR-Lex) · Commission Regulation (EU) 2020/749 amending Annex III to Regulation (EC) No 396/2005 as regards maximum residue levels for chlorate in or on certain products · government · fetched
- Publications Office of the European Union (EUR-Lex) · Commission Regulation (EU) 2017/2158 establishing mitigation measures and benchmark levels for the reduction of the presence of acrylamide in food · government · fetched