Chamberlain Coffee vs DoMatcha Matcha: 2026 Comparison
This 2026 comparison covers Chamberlain Coffee and DoMatcha across price, testing transparency, heavy metal disclosure, and organic certification. Both brands are priced within 5% of each other per gram, so price is not a meaningful differentiator here.
Verdict by Axis
No single overall winner is declared. The better choice depends on which axis matters most to you.
Price per gram
Tie / indeterminate
Both brands are priced within 5% of each other ($0.93/g vs $0.95/g). Effectively a tie.
Testing transparency
DoMatcha
DoMatcha is Tier 3 vs Unrated for Chamberlain Coffee. Lower tier number means more disclosure.
Published lead level
Tie / indeterminate
Neither brand has published a numeric lead value. Cannot compare.
Origin
Tie / indeterminate
One or both brands have not publicly disclosed their leaf origin region.
Organic certification
Tie / indeterminate
Both brands hold organic certification (ORGANIC and ORGANIC). Tie.
Side-by-Side Spec Table
| Field | Chamberlain Coffee | DoMatcha |
|---|---|---|
| Origin | Not disclosed | Kagoshima and Uji, Japan |
| Grade | Premium | Ceremonial |
| Price per gram | $0.93/gBetter | $0.95/g |
| Transparency tier | -- | Tier 3 |
| Publishes numeric COA | No | No |
| Third-party tested | No | YesBetter |
| Organic certification | ORGANIC | ORGANIC |
| Lead (published) | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Cadmium (published) | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Arsenic (published) | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Mercury (published) | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Pesticide tested | No | No |
| Last verified | June 27, 2026 | June 27, 2026 |
Origin
Grade
Price per gram
Transparency tier
Publishes numeric COA
Third-party tested
Organic certification
Lead (published)
Cadmium (published)
Arsenic (published)
Mercury (published)
Pesticide tested
Last verified
Heavy Metals and Safety Disclosure
Neither Chamberlain Coffee nor DoMatcha has published numeric heavy metal values as of the last verification dates (June 27, 2026 and June 27, 2026 respectively). Without published ppb values, independent verification is not possible.
| Metal | Chamberlain Coffee | DoMatcha |
|---|---|---|
| Lead | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Cadmium | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Arsenic | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
| Mercury | Not publicly published (checked June 27, 2026) | Not publicly published (checked June 27, 2026) |
Source: brand-published COAs and independent test results. Values are from specific batches and dates. Absence of published data does not indicate safety or danger. Last verified: Chamberlain Coffee June 27, 2026, DoMatcha June 27, 2026.
Price Comparison
Chamberlain Coffee ($0.93/g) and DoMatcha ($0.95/g) are priced within 2% of each other per gram. The price difference is negligible for most buyers.
Detailed Analysis
Testing Transparency
No public testing statement has been found for Chamberlain Coffee as of the last verification date. DoMatcha states that it tests its products but has not published numeric results publicly.
Origin and Sourcing
DoMatcha sources from Kagoshima and Uji, Japan. Chamberlain Coffee has not publicly disclosed a specific leaf origin region. Origin cannot be fully compared.
Which Should You Buy?
If testing transparency is your priority: DoMatcha (Tier 3) discloses more than Chamberlain Coffee (Unrated).
Frequently Asked Questions
Is Chamberlain Coffee or DoMatcha cheaper?
Chamberlain Coffee is cheaper at $0.93/g vs $0.95/g per gram, a difference of $0.02/g. Prices verified as of 2026-06-27.
Does Chamberlain Coffee publish lab results?
No public testing statement or COA has been found for Chamberlain Coffee as of June 27, 2026.
Does DoMatcha publish lab results?
DoMatcha states that it tests its products but has not published numeric results publicly as of June 27, 2026.
Which is third-party tested: Chamberlain Coffee or DoMatcha?
DoMatcha is third-party tested. Chamberlain Coffee does not have a confirmed third-party testing status as of the last verification date.
Related comparisons
All data in this comparison is sourced from publicly available COAs, brand websites, and independent test results. Every safety data point carries its source and last-verified date. Steady Matcha does not conduct or claim ownership of third-party test results for other brands. Brand information changes: verify current status before purchasing.