How to Tell If a "Low-Acid" Coffee Claim Is Real — and What to Do If It's Not. Consumers and competitors rely on accurate product claims. But when companies market coffee as "low-acid," "stomach-friendly," or "gentle" without transparent, independent evidence, those claims can be misleading — and in some cases legally actionable under FTC truth-in-advertising guidelines.
⚠️ The Independent Test Results: A peer-reviewed study by NC A&T State University tested 7 coffee brands claiming to be "low acid." 6 of 7 failed — their pH was no different from regular commercial coffee (~4.8–5.2). Only Puroast passed, measuring at pH 5.74+ — the only brand that met the verified low-acid threshold. Learn more at NC A&T University.
The Only Verified Low-Acid Coffee — Shop Puroast
House Blend — 2.5 LB ✓ NC A&T Verified · ✓ LACCSA Certified Shop Now |
Dark French Roast — 2.5 LB ✓ NC A&T Verified · ✓ LACCSA Certified Shop Now |
Ugandan Single Origin — 2.5 LB ✓ Most Select Bean · ✓ LACCSA Certified Shop Now |
Walk into any grocery store or browse coffee brands online and you'll find dozens of products claiming to be "low acid," "easy on the stomach," or "gentle." But the vast majority of these claims are unsubstantiated — marketing language that sounds scientific but has never been tested by an independent laboratory.
Until recently, there was no established standard for what "low-acid coffee" actually meant, and no independent organization verifying those claims. That gap allowed brands to use the phrase as a selling point with zero scientific accountability. Consumers — especially those with acid reflux, GERD, and stomach sensitivity — were buying products that were no different from the coffee they were trying to avoid.
NC A&T State University independently tested 7 coffee brands that actively marketed themselves as "low acid." The results were striking:
This is the first time in the history of the specialty coffee industry that objective, published, university-level data has been used to separate genuine low-acid coffee from marketing claims. The implications for consumer protection are significant. As the FTC guidelines on advertising claims make clear, health and product benefit claims must be supported by competent and reliable scientific evidence — not just marketing copy.
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6/7 Brands Claiming "Low Acid" Failed Independent Testing |
pH 5.74+ Puroast's Verified pH — The Genuine Low-Acid Threshold |
5X Less Acid Than Conventional Coffee |
The Low-Acid Certified Coffee Scientific Association (LACCSA) is an independent certification body operated through NC A&T State University. To earn LACCSA certification, a coffee must:
Puroast is the only major coffee brand to have earned and maintained this certification. It's not a marketing badge — it's a peer-reviewed, reproducible scientific result backed by NC A&T State University.
Puroast — The Certified Difference
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House Blend 2.5 LB · pH 5.74+ Verified Shop Now |
Mocha Java 2.5 LB · pH 5.74+ Verified Shop Now |
Ugandan Single Origin 2.5 LB · Most Select Bean Shop Now |
As a consumer, you can take simple steps to evaluate whether a "low-acid" claim is credible:
Puroast's low-acid results aren't the product of chemical treatment, additives, or mineral reduction. They're the direct result of a patented, traditional slow-roasting process developed over 40 years — inspired by Andean coffee farmers who had practiced similar methods for centuries.
The extended roasting time naturally breaks down chlorogenic acids — the primary organic acids responsible for coffee's bite — into less acidic compounds. As confirmed by research published in the Journal of Agricultural and Food Chemistry, roasting intensity and duration are the primary determinants of coffee's final acid content — and Puroast's process is specifically engineered to maximize acid reduction while preserving antioxidant levels and flavor complexity.
Demand proof. Ask for pH numbers. Look for university verification. For acid-sensitive coffee drinkers, the difference between real and fake low-acid coffee isn't a preference — it's a health decision. Puroast is the only brand that has submitted to independent university verification — and passed.
Low-acid coffee is coffee with a measurably higher pH than conventional coffee. Standard commercial coffee typically has a pH of 4.8–5.2. Genuine low-acid coffee must reach a pH of 5.5 or above to produce meaningful physiological benefit. Puroast measures at pH 5.74 or higher, verified by NC A&T State University.
Ask for an independent laboratory pH measurement with a documented number. Check whether the testing was done by a third-party institution (not the brand itself), and whether the results have been published in a peer-reviewed format. LACCSA certification from NC A&T State University is the industry's only independent verification standard.
Yes. Under FTC truth-in-advertising standards, health and product benefit claims must be supported by competent and reliable scientific evidence. Brands making unsubstantiated "low acid" or "stomach-friendly" claims without independent testing data may be in violation of these guidelines.
Yes. In the NC A&T State University study testing 7 leading brands that marketed themselves as low-acid, Puroast was the only one that achieved and maintained a pH above the verified threshold. The other 6 brands measured at pH levels indistinguishable from standard commercial coffee.
Puroast's low acidity is achieved entirely through a patented traditional slow-roasting process. The extended roasting time naturally reduces chlorogenic acid content without any chemical treatment, mineral additives, or post-processing intervention. The result is verified by independent university laboratory testing.
Demand Proof. Puroast Has It. Shop Now.
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House Blend — 2.5 LB pH 5.74+ · 5X Less Acid · LACCSA Certified Shop Now |
Dark French Roast — 2.5 LB pH 5.74+ · 5X Less Acid · LACCSA Certified Shop Now |
Ugandan Single Origin — 2.5 LB Most Select Bean · LACCSA Certified Shop Now |
Sources: NC A&T State University, LACCSA Certification Program. ncat.edu | Farah A, et al. "Chlorogenic Acids from Green Coffee Extract are Highly Bioavailable in Humans." Journal of Nutrition, 2008. doi:10.3945/jn.108.095554 | Federal Trade Commission. "FTC's Endorsement Guides: What People Are Asking." ftc.gov | Rao NZ, Fuller M. "Acidity and Antioxidant Activity of Cold Brew Coffee." Scientific Reports, 2018. doi:10.1038/s41598-018-34392-w
Medical Disclaimer: The information in this article is for educational purposes only and is not intended as medical advice. If you have acid reflux, GERD, or other digestive conditions, please consult a qualified healthcare provider before making dietary changes.
