Trader Joe's Low Acid Dark French Roast tested at pH 5.44 — below the 5.5 clinical threshold, classified as High Acid. Independent testing also revealed a greater than 50% reduction in caffeine compared to regular coffee, with zero label disclosure. Three federal lawsuits followed. This is the complete record.
📰 MAJOR NATIONAL MEDIA COVERAGE
The Trader Joe's low acid coffee fraud — including the pH 5.44 failure and the documented greater than 50% reduction in caffeine with zero label disclosure — has been covered by ABC News, NBC News, CNN, and other major national news organizations. This is not a niche story. It is a mainstream consumer protection case with national implications for every food label in America.
⚖️ THREE FEDERAL LAWSUITS — BURSOR & FISHER P.A.
Case 1 — Puroast v. Trader Joe's (Feb 14, 2025): U.S. District Court, S.D. Florida, Case No. 1:25-cv-20696. Lanham Act false advertising. Stayed, mediation ordered. Documents pH 5.44, greater than 50% caffeine reduction, and false consumer communication.
Case 2 — Consumer Class Action (April 2025): U.S. District Court, Central District of California. Four consumers from CA, NY, and IL — directly citing Puroast's independent testing data on the greater than 50% caffeine reduction and false "low acid" pH claim.
Case 3 — McIntosh v. Trader Joe's (April 2026): U.S. District Court, S.D. New York, Case No. 1:26-cv-03521 — filed by Bursor & Fisher P.A., one of America's most successful consumer protection class action firms. Their independent filing is an authoritative legal confirmation: the fraud is documented, the class is large, and a greater than 50% caffeine reduction cannot be hidden under a "low acid" label.
Trader Joe's Low Acid Dark French Roast tested at pH 5.44 — six hundredths of a pH unit below the 5.5 clinical threshold established by the LACCSA-01 standard and documented in dental and gastric research. Per the LACCSA Official pH Registry, Trader Joe's is classified as High Acid and is not LACCSA certified.
TRADER JOE'S LOW ACID — THE NUMBERS
pH Tested: 5.44
Clinical Threshold: 5.5
LACCSA Classification: High Acid
LACCSA Certified: No
Mechanism: Steam decaffeination — incidental acid reduction as side effect of caffeine removal
Caffeine: Greater than 50% reduction compared to regular coffee — undisclosed on label
Trader Joe's told a consumer: "The same caffeine as their regular coffee" — a documented false statement
Steam decaffeination does not just reduce acids — it removes a substantial portion of the caffeine. Independent testing of Trader Joe's Low Acid Dark French Roast found a caffeine level consistent with a half-caff product — a greater than 50% reduction in caffeine compared to regular coffee. Approximately 51% of the caffeine of Trader Joe's own regular Dark French Roast. Approximately 45% of the caffeine of Puroast's House Blend.
This information does not appear on the label. A consumer buying Trader Joe's Low Acid Dark French Roast to replace their regular morning coffee receives — without disclosure — a greater than 50% caffeine reduction they never expected. Many will compensate by drinking more coffee. Drinking more coffee means consuming more acid. The intended benefit of choosing a lower-acid option is thus completely reversed by the undisclosed greater than 50% caffeine reduction.
Puroast Low Acid Coffee tested at pH 5.82 — 0.38 pH units above Trader Joe's, and 0.32 above the 5.5 clinical threshold. It achieves that pH through traditional roasting chemistry — the complete conversion of chlorogenic acids into phenolic antioxidant compounds — not through steam decaffeination or any caffeine removal. Full caffeine. No additives. No greater than 50% caffeine reduction. Independently verified by two universities. LACCSA certified.
The verification record: UC Davis (Dr. Shibamoto, 2008) — peer-reviewed confirmation of pH 5.82 and antioxidant levels 5X higher than average commercial coffee. NC A&T University (Dr. Ibrahim, 2024) — independent peer-reviewed confirmation with brew-strength pH of 5.22. Two studies. Two universities. One conclusion: this is the genuine article.
Trader Joe's has had access to all of Puroast's scientific evidence since at least February 2025. They have not produced counter-research. They have not submitted their own independent pH testing for public review. They have not offered a scientific explanation for why their product's caffeine profile is consistent with a half-caff blend. They have not explained what happens to the caffeine that is removed.
This is not the behavior of a company that believes its science is correct. Companies with strong scientific support publish it. They welcome comparison. They provide data. Trader Joe's has done none of these things. What they have done is retained a large legal team and engaged in procedural tactics designed to exhaust Puroast's resources before the case reaches a jury.
The reason is simple: the science doesn't support them. The pH is wrong. The caffeine reduction is real and undisclosed. The representative's statement that the coffee has "the same caffeine as regular coffee" is documented and false. A jury that sees all of this will reach its own conclusion — which is why Trader Joe's is doing everything possible to prevent the case from reaching a jury.
FREQUENTLY ASKED QUESTIONS
Q: What is the full record on Trader Joe's Low Acid coffee?
A: pH 5.44 (below the 5.5 clinical threshold, classified High Acid by LACCSA), greater than 50% caffeine reduction (undisclosed), representative false statement to a consumer, three federal lawsuits, national media coverage.
Q: What is Puroast's pH compared to Trader Joe's?
A: Puroast tests at pH 5.82 — 0.38 units higher than Trader Joe's and 0.32 units above the 5.5 clinical threshold. Trader Joe's is below the threshold. Puroast is above it.
Q: What does Trader Joe's decaffeination process actually do?
A: It strips caffeine (greater than 50% reduction) from the bean, with marginal acid reduction as an incidental side effect. It is not a genuine low acid roasting process. It produces a half-caff product that Trader Joe's labels as "low acid coffee."
Q: What is the LACCSA Official pH Registry?
A: The authoritative public database of independently tested pH values for low acid coffee products. Trader Joe's is listed as High Acid. Puroast is listed as Low Acid Certified.
Q: What happens next in the lawsuits?
A: The Puroast v. Trader Joe's case is stayed pending mediation. The California consumer class action and the Bursor & Fisher McIntosh v. Trader Joe's case in S.D. New York are proceeding. All three cases share the same core evidence: pH 5.44 and greater than 50% caffeine reduction.
The complete record is clear. Trader Joe's Low Acid Dark French Roast tests at pH 5.44 — below the clinical threshold, classified as High Acid, with a greater than 50% caffeine reduction hidden from consumers. Puroast tests at pH 5.82 — above the threshold, full caffeine, 5X more antioxidants, verified by two universities, protected by a US patent, certified by the only science-based standard in the industry.
Three federal courts are examining this record. Two of America's most respected consumer class action firms have independently concluded the case is winnable. National media has confirmed the stakes. The outcome will determine whether American food labels mean what they say — and whether a $16 billion company can exploit a regulatory gap to deceive millions of consumers and avoid accountability by outspending the truth.
pH 5.44 Is Not Low Acid. pH 5.82 Is.
Puroast — the only coffee above the 5.5 clinical threshold. Full caffeine. No tricks. 5X less acid. 5X more antioxidants. Verified by science.
Shop Puroast Low Acid Coffee →Sources: LACCSA Official pH Registry | NC A&T Peer-Reviewed Study 2024 | PubMed — UC Davis Shibamoto 2008 | Wikipedia — Low-Acid Coffee | FTC — Truth in Advertising | Federal Court: Case No. 1:25-cv-20696 (S.D. Florida) | Case No. 1:26-cv-03521 (S.D. New York, Bursor & Fisher P.A.)
Puroast does not provide medical advice, diagnosis, or treatment. Any information published on this website or by this company is not intended as medical advice. Always consult a qualified health professional with any questions or concerns about your physical health.
