How to read a coffee powder specification, line by line
What we settle before a coffee powder specification sheet goes out. Most coffee powder enquiries arrive with a competitor sheet quoting a single line, so the first thing we establish is the application the powder is going into, because ready-to-drink coffee, café-style beverage mixes, functional energy drinks and baking pull the roast character and the mesh in different directions. We then confirm the mesh the process needs, 80 mesh as standard or 100 mesh on request, and whether the buyer needs OEM packing, because that changes the drum and label work rather than the powder. Before the sheet goes out we also ask our manufacturing partner for the most recent lot COA to send alongside it: the sheet states limits, the COA states results, and on a marginal lot those are two different documents. If the buyer needs an alternative mesh size or carrier system, we confirm feasibility and lead time with the partner within one business day rather than quoting blind.
A coffee powder specification is a short sheet, and buyers read it in the wrong order more often than any other document in the beverage-ingredient category. Most people open it looking for a single potency number, find “100% coffee solids”, and are not sure what to compare. This article reads the coffee powder specification in the order that matters: what the source and process lines tell you, what the assay and physical lines actually commit to, and what the batch COA adds on top. The commercial side — how quotations are compared and what a first order looks like — is covered in our coffee powder sourcing guide.
What the source and process lines tell you
The standard material is spray-dried pure coffee made from coffee (Coffea arabica / robusta beans) by roasting, extraction and spray drying. Two details matter more than they look. First, the species line: arabica and robusta beans are the stated source, which is the raw material behind the full, roasted character of the powder. Second, the process line: spray drying is what turns a roasted extraction into a dark brown fine powder that dissolves readily, and that is the single biggest practical difference between this material and a liquid coffee concentrate. The same material reaches buyers under several names at once — soluble coffee, instant coffee powder, spray dried coffee powder — and on our sheet all of them mean the same grade: 100% coffee solids, dark brown fine powder, 80 mesh. If your process handles a concentrate instead, that is a different product line, and it is worth saying so before prices are compared.
The coffee powder assay line: 100% coffee solids
The assay line states 100% coffee solids. That single line is the most useful filter in the category: a powder at 100% coffee solids has nothing in it but coffee, which rules out blended and carrier-extended products before you compare a single price. The result is a dark brown fine powder with a full, roasted character and characteristic odour and taste, supplied at 80 mesh as standard with 100 mesh on request. When you compare spray dried coffee powder specifications from different suppliers, this is the first line to settle, because a sheet that does not state the assay explicitly is describing something else.
The coffee powder specification, line by line
Mesh is the line that decides whether the powder works in your process. The standard grade is 80 mesh, and 100 mesh is available on request where a finer dispersion or a smoother mouthfeel is needed. The remaining lines are the standard limits for the category: loss on drying at 5.0% or less and total ash at 5.0% or less. The full standard sheet reads as follows:
| Line | Standard grade |
|---|---|
| Source | Coffee (Coffea arabica / robusta beans) |
| Process | Roasting, extraction and spray drying |
| Assay | 100% coffee solids |
| Appearance | Dark brown fine powder |
| Odour & taste | Characteristic |
| Particle size | 80 mesh standard, 100 mesh on request |
| Loss on drying | ≤ 5.0% |
| Total ash | ≤ 5.0% |
| Packing | 25 kg fibre drum, double polyethylene liner |
| Shelf life | 24 months in unopened original packing |
| Storage | Cool, dry, away from direct sunlight |
A specification sheet states limits. A Certificate of Analysis states results. On a marginal lot those are two different documents, and buyers who keep both are never surprised.
What the batch COA adds
Every lot ships with a batch Certificate of Analysis. The specification sheet above states the limits each lot is produced and released against; the COA states the results for the lot that would actually ship to you. That is why we ask our manufacturing partner for the most recent lot COA before a quotation goes out, and why we recommend buyers ask every coffee powder supplier for the latest lot COA — the coffee powder COA that would ship with the order, not a generic sample. If the assay, mesh or carrier system you need differs from the standard grade, we confirm feasibility and lead time with the partner within one business day rather than quoting blind.
What to check when comparing coffee powder specifications
- The assay line first. 100% coffee solids, stated explicitly, which rules out blended and carrier-extended products before any price comparison.
- The mesh line. 80 mesh as standard, 100 mesh on request; confirm which one each supplier is quoting.
- The physical limits. Loss on drying and total ash each at 5.0% or less on the standard sheet.
- The documentation. A batch COA per lot, plus a sample COA with the quotation, rather than a one-off document.
- Packing and shelf life. 25 kg fibre drum with a double polyethylene liner, 1 kg and 5 kg foil bags for pilots, 24 months in unopened original packing.
Frequently asked questions
What is coffee powder standardised to?
The assay is 100% coffee solids: roasted, extracted and spray-dried coffee from Coffea arabica / robusta beans, supplied as a dark brown fine powder with a full, roasted character. Loss on drying and total ash are each limited to 5.0% or less, and the powder is 80 mesh as standard with 100 mesh on request.
What should I check when comparing coffee powder specifications?
Check the assay line first: 100% coffee solids, stated explicitly, which rules out blended and carrier-extended products. Then the mesh line (80 mesh standard, 100 mesh on request), the physical limits (loss on drying and total ash each at 5.0% or less), and the documentation: ask each supplier for the latest lot COA, the coffee powder COA that would ship with your order, rather than a generic sample.
What packing and shelf life does coffee powder come in?
Standard packing is a 25 kg fibre drum with a double polyethylene liner, with 1 kg and 5 kg foil bags for samples and pilot runs. Shelf life is 24 months in unopened original packing, stored cool, dry and away from direct sunlight. MOQ is 1 kg.
Related reading
Related: Coffee Powder — full specification, grades and documentation.