Our take
The historical Amazon capture identifies row 346 as Mueller Ultra-Grind CG900-BLACK and places it in the electric burr-grinder category. The listing describes conical burrs, a ten-position dial, timer controls, automatic stopping, a removable top burr and an 8.5 oz bean-hopper claim. No maker-hosted page or original manual was found. The listing also says 230 V, which is not confirmed for this US-history candidate. Treat these details as clues to verify, not as manufacturer-backed matches.
Exploratory comparison only when the buyer can verify the item identity, mechanism and rating plate..
Not for hard voltage, workload, grounds-capacity, burr-size or performance requirements based on the historical seller listing alone.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- The historical exact-ASIN page provides a model clue and a detailed set of claims to inspect.
- Listing text describes adjustable time controls and a removable top burr, if confirmed on the unit.
- The review preserves conflicts instead of treating an old no-offer label as current availability.
What to weigh up
- No Mueller product page or original CG900-BLACK manual was located.
- The 230 V field does not confirm a US unit’s nameplate and wattage remains unknown.
- Thirty to 32 cups does not define grounds mass, and 40 mm gears do not establish burr diameter.
The key details
| Model covered | CG900-BLACK historical ASIN B0833F31MS; listed features are seller claims without maker confirmation |
|---|---|
| Grind and dose controls | Historical seller page describes a ten-position dial and conical burrs |
| Capacity and use | Seller lists an 8.5 oz bean hopper, removable top burr and automatic stop |
| Fit and limitations | Voltage, wattage, grounds capacity, duty and current offer are unresolved |
Performance figures are manufacturer claims. Source checked October 2, 2026. Regional models and included accessories can differ.
What the features mean for you
An identifiable historical candidate, not a verified specification sheet
The saved Amazon page identifies the old listing as Ultra-Grind CG900-BLACK and places it in the electric burr-grinder category. Its indexed capture is about seven months old, so its unavailable/no-featured-offer label is historical and cannot establish present stock. The exact-model search of Mueller Home did not surface a maker product page or original manual. The product title and category help retain this candidate in the ledger, but its seller-entered feature details need independent confirmation on the unit or its documentation.
The listed burr and controls are provisional claims
The historical page describes conical burrs, hardened-alloy-steel material, a ten-position fine-to-coarse dial, plus/minus time controls, automatic stopping and a removable top burr. These are listing statements rather than maker-confirmed specifications. The phrase 40 mm hardened gears does not establish a 40 mm burr diameter. The saved tag profile keeps the claimed burr geometry, material, setting count and hopper capacity at low confidence. A buyer should inspect the actual mechanism and model label before treating any one of these claims as a feature match.
Electrical and duty details are not settled
The Amazon capture and an unauthenticated Manuals+ transcription list 230 V, but the row is a US-history candidate and the exact unit rating is unresolved. Wattage is not established. Manuals+ repeats suggested cycles under 90 seconds with rest and an overheat lockout, but no original maker manual was found and its operating claims are not used as a verified duty rating. Do not infer household or commercial suitability from the words Professional Series, from an unverified cycle or from a stale seller record.
Capacity wording needs a precise definition
The seller page lists an 8.5 oz bean hopper and says 30–32 cups, but the cup phrase does not define grounds mass, grind setting or batch yield. The listing does not give a reliable grounds-bin capacity. The title’s 40 mm wording refers to hardened gears and cannot be converted into a burr diameter. These distinctions matter if a buyer has a required bean load, grounds-bin size or burr threshold. Keep those fields unknown unless a source tied to the offered unit resolves them.
Use the search link only to investigate the candidate
This record can be useful as a lead for shoppers who are willing to verify the physical CG900-BLACK and its manual before comparing it. It should not receive hard-match credit for seller-only claims or a direct purchase link based on an old ASIN. Confirm the rating plate, burr assembly, operating instructions and capacity definitions; otherwise choose a better documented model. Grind consistency, retention, noise, espresso results, current price and present availability remain unknown. The page is an evidence review, not firsthand testing or a buyer-review summary.
What else to compare
Before you buy
Does a maker manual confirm CG900-BLACK features?
No maker manual or product page was found; the saved feature list comes from seller records.
Does the title establish 40 mm burrs?
No. It says 40 mm hardened gears, which does not establish a burr diameter.
Can a US buyer rely on the 230 V field?
No. Verify the offered unit’s nameplate; the saved listing field is not a confirmed US rating.
What does 30–32 cups mean?
The seller page does not define that phrase as bean load, grounds capacity or measured yield.
Are the suggested run/rest cycles confirmed?
No. They come from an unauthenticated third-party transcription, not a maker manual.
Is B0833F31MS currently available?
No current exact Amazon offer was verified; the old capture’s availability label is not current.
Where can I check the current price?
Use the Amazon link for current offers. Check the exact model, seller, product condition, delivery, and return terms. This page does not display a live price or confirm stock.
Sources & review basis
We use the following manufacturer documentation for the product features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- Historical Amazon listing and unauthenticated Manuals+ transcription; specifications remain conditional ↗Paid link · We may earn a commission. — checked October 2, 2026.
- Historical Amazon capture identifies CG900-BLACK and seller-provided features; crawl is stale and not current-offer evidence ↗Paid link · We may earn a commission. — checked October 2, 2026.
- Third-party ASIN-indexed manual transcription; not authenticated as a Mueller original manual ↗ — checked October 2, 2026.
- Saved exact-model search did not locate a maker product page or original manual ↗ — checked October 2, 2026.
The decision
The historical Amazon capture identifies row 346 as Mueller Ultra-Grind CG900-BLACK and places it in the electric burr-grinder category. The listing describes conical burrs, a ten-position dial, timer controls, automatic stopping, a removable top burr and an 8.5 oz bean-hopper claim. No maker-hosted page or original manual was found. The listing also says 230 V, which is not confirmed for this US-history candidate. Treat these details as clues to verify, not as manufacturer-backed matches.
Is it the right fit?
Check the exact model and today’s offers on Amazon.