Grades & Models:
Compare Specifications, Not Names

Ask both suppliers for a signed specification and a lot COA covering the same parameters: moisture (state as-is or dry basis), reducing sugars, sulphite as SO₂, microbiology, colour, bulk density and particle distribution. Use USDA A-A-20032H as a benchmark — for the potato flakes grade, references are moisture ≤ 9.0%, reducing sugars ≤ 4.0%, SO₂ ≤ 500 mg/kg, APC < 100,000 CFU/g and Salmonella negative, while the potato granules grade references ≤ 9.5% moisture, SO₂ ≤ 600 mg/kg and yeast & mould < 100 CFU/g. Remember that any dehydrated potato product exported to the EU must also respect the 400 mg/kg SO₂ cap of Regulation (EC) 1333/2008. Request samples drawn from the same lot as the COA, run identical trials with the same water ratio, mixer and measurement method, then compare the numbers line by line — if they differ, the two grades share only the name.

Upgrading usually means tighter moisture, colour or microbial limits, which can change hydration speed and finished texture; downgrading may relax reducing sugars or SO₂ limits, affecting fry colour, flavour or destination compliance. In practice the difference between a food grade potato flour and an economy grade of the same form is often a few tenths of a percent of moisture and a different SO₂ target — enough to shift dough handling and shelf life. Under USDA A-A-20032H, flakes grade moisture sits at ≤ 9.0% while granules run ≤ 9.5%, and SO₂ must stay within the 500–600 mg/kg reference range — and under the 400 mg/kg EU cap of Regulation (EC) 1333/2008 for dehydrated potato products. Revalidate water addition, mixing time and target texture whenever the grade changes, check a fresh lot COA for reducing sugars and bulk density, and trial with your own water ratio and mixer before locking the new grade into your specification.

Grades with tight specifications (food, bakery) are usually produced on dedicated runs, so MOQs tend to be higher or fixed; economy and bulk grades can often be consolidated from stock with lower MOQs. This is a production-planning reality at any China supplier: a dedicated run of food grade potato flour for a full container has different economics than pulling economy grade flakes from warehouse stock. The relationship also affects price — tighter grades carry more raw-material selection and screening cost, which shows in the per-ton price, while bulk grade volume unlocks the best price per kilogram. Ask for the MOQ of the exact grade you need, not of the product family, together with the price curve from trial container to annual contract, and confirm that the MOQ lot ships with a matching COA.

Particle distribution, rehydration behaviour, bulk density, colour consistency between lots, microbial results on the COA, sulphite compliance with destination rules (EU 1333/2008, GB 2760), packaging, transit time and the supplier's ability to hold a specification across seasons. For the potato flakes grade, also verify flake-size distribution and clump resistance; for the potato granules grade, check granulation uniformity because it drives dosing accuracy. Keep the USDA A-A-20032H references as your floor — moisture ≤ 9.0% for flakes and ≤ 9.5% for granules, reducing sugars ≤ 4.0% — and remember the EU 400 mg/kg SO₂ cap for dehydrated potato products. A low price on a loose spec usually reappears as process variation: ask the China supplier for three consecutive lot COAs and a trial run before comparing price per ton.

Start from your target: if fry colour is critical, the food grade potato flakes specification with reducing sugars ≤ 4.0% (USDA A-A-20032H) is the safer anchor, because higher reducing sugars darken fried colour. If the finished product tolerates colour shift, economy grade flakes at a lower price per ton can work — but check the lot COA for moisture (≤ 9.0% reference), SO₂ (≤ 500 mg/kg USDA, ≤ 400 mg/kg EU 1333/2008) and microbiology (APC < 100,000 CFU/g, Salmonella negative). Ask the China supplier for both specifications side by side, request samples of both grades from the same season's raw potatoes, and run identical fry trials with your water ratio, oil temperature and batter before choosing. This is the grade vs model comparison done with data, not names.

There is no single number: the MOQ depends on the grade, the form, the season and the packaging. As a rule at our factory, economy and bulk grade flakes can be consolidated from stock at a lower MOQ, while food grade potato flour and bakery-grade granules need dedicated runs with a higher, fixed MOQ — typically from one full container. Price moves with grade for a reason: tighter moisture, reducing sugars and microbial limits mean more raw-material selection and screening, so the price per ton climbs from bulk grade to economy grade to food grade. Ask for the MOQ and the price curve for the exact grade you need, plus a trial lot COA, and compare like for like across suppliers.

The two forms are made for different jobs, so their specifications differ in texture-relevant parameters. Under USDA A-A-20032H, flakes grade moisture is ≤ 9.0% and granules ≤ 9.5%, while reducing sugars stay ≤ 4.0% in both; sulphite differs — flakes ≤ 500 mg/kg SO₂, granules ≤ 600 mg/kg — and both must respect the EU 1333/2008 cap of 400 mg/kg for dehydrated potato products. Bulk density is the practical difference: granules pack denser and dose more precisely, flakes rehydrate faster. Microbiologically, flakes reference APC < 100,000 CFU/g with Salmonella negative, while granules reference yeast & mould < 100 CFU/g. Ask the China supplier for a side-by-side specification and lot COA for the exact grade — this is the real grade vs model comparison before you commit.