Most select bean — complex, premium, genuinely low acid cold brew.
Shop NowMost cold brew brands compete on taste, caffeine claims, and packaging design. But almost none compete on the metric that matters most to health-conscious coffee drinkers: verified acidity (pH).
| Brand | Approx. pH | Low Acid Claim | 3rd Party Verified |
|---|---|---|---|
| Puroast | 5.82 | ✅ Yes | ✅ NC A&T / LACCSA |
| Starbucks Cold Brew | ~4.9–5.0 | ❌ No | ❌ No |
| Chameleon Cold Brew | ~4.9 | ❌ No | ❌ No |
| Stumptown Cold Brew | ~5.0 | ❌ No | ❌ No |
| La Colombe Cold Brew | ~4.8–5.0 | ❌ No | ❌ No |
Starbucks Cold Brew: Widely available. pH ~4.9–5.0 — no acid benefit. Chameleon: USDA Organic, clean label. Estimated pH ~4.9. Excellent for convenience, not for acid reduction. Stumptown: Strong complex flavor. pH ~5.0. No verified low-acid claims. La Colombe Draft Latte: Nitrogen-pressurized RTD. pH ~4.8–5.0. Not appropriate for acid-sensitive drinkers.
A 2.5lb bag of Puroast makes 30+ servings of cold brew concentrate at approximately $1.00 per serving vs. $3–5 for RTD. All you need is a mason jar, filtered water, and 12–24 hours. Puroast is the only coffee to have passed the rigorous LACCSA standard for low acid certification.
For taste and convenience: Stumptown, Chameleon, and La Colombe are strong options. For verified low-acid and maximum antioxidants, make your own with Puroast: the only coffee certified by NC A&T's LACCSA standard (pH 5.82).
No. Starbucks cold brew has an estimated pH of approximately 4.9–5.0 — comparable to regular hot coffee. It is not meaningfully lower in acid than any other standard coffee product.
No major RTD cold brew brand has been independently verified as genuinely low acid. The only way to guarantee low-acid cold brew is to brew it yourself using Puroast coffee — verified at pH 5.82 by NC A&T State University under the LACCSA certification standard.
No. Chameleon Cold Brew has an estimated pH of approximately 4.9 — standard for cold brew and comparable to hot coffee. It is organic and uses quality beans, but it is not a low-acid product by any scientific standard.
A 2018 peer-reviewed study in Scientific Reports (Rao & Fuller) confirmed that cold and hot brew coffee have comparable pH values (4.85–5.13). Coffee acidity is primarily determined by the roasting process — not whether it's brewed hot or cold.
Puroast sits at pH 5.82 — verified by NC A&T University — with 5X more antioxidants. Brew it cold. Brew it hot. The acid advantage is always there.
Shop Puroast NowMedical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare provider if you have acid reflux, GERD, or any other digestive condition.
