Escali Primo Digital Food Scale Review

NSF International certifies equipment to commercial food-safety and sanitation standards — the same body that certifies restaurant gear. For the Primo it means the design and materials meet standards for cleanability and food contact, which is genuinely rare at this price and a real trust marker for something that touches your food daily. What it is NOT is a certification of weighing accuracy: NSF listing speaks to sanitation and build, and we score it under build and material, not under accuracy. It's one honest signal among several — alongside years of Wirecutter/NYT acclaim — that this scale is a proven quantity.

It's the honest middle of it. Our material principle ranks a 304 stainless platform first for a daily wet-food surface, and the Primo's body is durable plastic — which is why it scores 8.6 on build rather than the OXO's 9.6 and sits at #3. But it's the best-executed plastic in the category: a sealed, rounded, gap-free body with no crevices for food to lodge in, NSF-listed for sanitation, that wipes clean in one pass. That's materially different from a cheap plastic shell with seams and stickers. We demote bare commodity plastic honestly (see the Amazon Basics at #8); the Primo's sealed construction earns its podium spot.

It's the point. The Primo has exactly the controls a food scale needs — one button for on/off/tare, one for units (g, oz, lb:oz) — and nothing to misconfigure, mis-press, or break. For daily weight-loss tracking your loop is: bowl on, tare, food in, read grams, log. The Primo does that loop with zero friction and keeps doing it for years, which is why reviewers who test scales professionally keep recommending it. If you want ml modes, backlights or bowls, other picks oblige — the Etekcity (#1) in particular. If you want a tool that just works, this is that tool.

This model's defining reputation is longevity: it has been in continuous production and on recommendation lists for well over a decade, and its sealed body is the reason — no display rails, no removable parts, no electronics exposed to spills. Escali backs it with a limited lifetime warranty on the design's durability (check the current listing for exact terms). In a category where $12 scales die quietly of flour in the seams and battery-door fatigue, a Primo that keeps reading true to 1 g for years is the workhorse outcome you're paying the modest ~$25 for. Batteries are standard replaceables, so there's no battery-pack obsolescence either.

1. [1] Lichtman 1992 PMID 1454084 — Discrepancy between self-reported and actual caloric intake and exercise in obese subjects. Doubly-labeled-water study: obese adults who reported diet resistance underreported their actual caloric intake by 47% on average and overreported activity by 51% — self-report fails exactly where weighing is exact. The evidence for owning a food scale at all; the Primo's specs are manufacturer claims, and its NSF listing certifies sanitation, not accuracy.
2. [2] Lasschuijt 2019 PMID 31255647 — Unaware of the amount consumed: systematic error in estimating food- and drink intake. Estimation error was roughly ten times greater for solid foods than liquids — the foods a kitchen scale weighs. An honest 1 g gram weight, logged, beats any eyeballed portion.