Our take
The Astra Unimax LED has a useful, clearly documented capacity distinction: the vessel holds 3 L in total, while the filtered-water compartment is 1.5 L. DAFI also documents an LED reminder and a Unimax cartridge target of up to 200 L, with monthly replacement guidance. These facts describe a current model configuration. They do not identify the old anthracite Amazon listing, its 12-cup convention, or an included alkaline cartridge. Treat the light as a maintenance aid, not a water-quality monitor.
Consider this Astra version if you want a clearly separated total and filtered capacity, a pitcher light that reminds you about filter age, and the Unimax cartridge format. Check the exact cartridge and package before relying on a reduction claim, because the reviewed DAFI pages do not establish a contaminant-specific claim or US NSF/ANSI certification for this configuration..
This configuration is not a match for a hard requirement for confirmed lead, PFAS, microplastics, or other named contaminant reduction, because the reviewed DAFI pages do not give a claim-specific performance result for the Unimax package. It is also a poor fit if you need 3 L of finished filtered water at once: the maker states 1.5 L for the filtered compartment. Do not use this article to authenticate the historical anthracite/alkaline listing or its seller bundle.
Pros & cons
What could work for you, and what to consider before buying.
What works in its favor
- DAFI separately states a 3 L total vessel capacity and 1.5 L filtered-water compartment, which makes the amount ready to pour easier to plan.
- The manufacturer describes Unimax cartridges as rated for up to 200 L and recommends monthly replacement, giving the maintenance discussion both a volume target and a calendar cue.
- The Astra LED configuration has a visible filter-change reminder, which is more convenient than relying only on memory while still being distinct from a TDS meter or contaminant test.
What to weigh up
- A 3 L headline capacity overstates the single filtered batch if a shopper reads it as finished water; DAFI separately lists 1.5 L filtered capacity.
- The pages reviewed here do not provide a model-specific contaminant reduction table or establish US NSF/ANSI certification for the Unimax configuration.
- The old Amazon listing's anthracite finish, alkaline cartridge, cup convention, and parent are not mapped to the current LED/Unimax catalogue package.
Specifications and exact model details
The key details
| Model covered | Astra 3 L / Unimax filter / LED sensor configuration |
|---|---|
| Model and compatible filter | Astra 3 L body with Unimax filter; the catalogue lists an LED package with three filters (GTIN 5900950927707) |
| Pitcher capacity | 3 L total capacity and 1.5 L filtered-water compartment; about 12.7 US cups total, not a claim about an old Amazon listing |
| Documented filter maintenance | DAFI rates Unimax for up to 200 L and says to replace a pitcher cartridge monthly |
| Maintenance monitor | LED sensor is a filter-change reminder; it does not test water or measure contaminants |
| Care and handling | DAFI describes a high-quality plastic body; dishwasher care for this exact configuration was not confirmed |
| Documented reduction and certification scope | The reviewed sources do not establish a contaminant-specific reduction claim or US NSF/ANSI certification for this package |
Performance figures are manufacturer claims. Source checked October 16, 2026. Regional models and included accessories can differ.
Full review: how the features affect your choice
What the features mean for you
Separate the vessel size from a finished filtered batch
DAFI lists 3 L as the Astra body's total capacity and 1.5 L as the filtered-water capacity for the Unimax family. That difference matters when estimating how much water is ready after one fill cycle: the open reservoir also needs room for tap water waiting to pass through. The 3 L figure is not 3 L of completed filtered water. DAFI's catalogue separately lists a package called Astra LED with three Unimax filters, but this does not prove that the older Amazon title's 12-cup wording uses the same cup convention or belongs to this package. Keep those two records separate when a specific serving volume is a hard requirement.
Unimax is a cartridge family with a calendar routine
The DAFI Astra page distinguishes Classic and Unimax cartridge formats. DAFI says the Unimax type can filter up to 200 L and recommends replacing a pitcher cartridge after one month. The volume target is conditional on water quality, while the monthly interval is a simple routine to follow. The exact historic listing instead says alkaline filter, which is not enough to identify a Unimax Standard cartridge. DAFI sells different cartridge types, so check the code printed on the seller's cartridge and the matching manufacturer instructions before applying any replacement or performance detail to a particular bundle.
Use the LED as a reminder, not as a water reading
DAFI describes two reminder styles for Astra: a manually set indicator and an LED sensor. Its support material says the sensor counts the filter's service period and changes color as replacement approaches. That is a calendar cue tied to the cartridge routine. It does not report total dissolved solids, identify a contaminant, or show whether a filter is performing as expected. A shopper who needs an included handheld TDS meter should compare that feature separately, and a person who needs a reduction claim should check the specific cartridge's performance documentation rather than the light.
Keep cartridge performance claims specific
The reviewed Astra sources support model configuration, volume, cartridge type and replacement routine. They do not provide a claim-specific result for lead, PFOA/PFOS, microplastics, mercury or chlorine taste and odor for the Unimax package. DAFI's broader line includes different filter types, including an Alkaline Up cartridge, but that does not establish which cartridge was included in the old anthracite listing. Do not translate an alkaline label, a filter-media description or an indicator light into a contaminant reduction result. Leave those facts unknown unless documentation identifies the precise cartridge and its tested claim.
Check the exact package and care instructions
DAFI's catalogue identifies an Astra LED package with three Unimax filters and a product code, which gives shoppers a useful comparison point. It does not connect that modern catalogue package to the old Amazon parent, finish or alkaline wording. The reviewed pages describe the vessel as plastic but do not settle dishwasher care for this exact package. Before buying, check the pitcher body, cartridge code, number of filters and included accessories in the seller's current photos and description. Use the DAFI instructions for the exact filter, and do not substitute a retailer's generic capacity or bundle title for model evidence. This review therefore compares the current documented configuration on its own terms and keeps listing-specific questions open for the shopper to verify.
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Before you buy
Does the 3 L Astra provide 3 L of filtered water at once?
No. DAFI lists 3 L total capacity and 1.5 L filtered-water capacity for this Astra family. The historical 12-cup listing is not mapped to this current configuration.
Does the LED test water quality?
No. DAFI describes it as a filter-change reminder. It tracks the replacement period; it is not a TDS meter or contaminant test.
Is this the old anthracite pitcher with an alkaline filter?
That relation is unverified. This article covers a catalogued Astra Unimax LED configuration. The old listing's finish, cartridge, package and Amazon parent remain unresolved.
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 and review basis
Sources & review basis
We use the linked product documentation for the features above. Our suitability notes and buying advice are editorial judgments based on those features, not measured performance results.
- DAFI Astra family page ↗ — checked October 16, 2026.
- DAFI Astra family page ↗ — checked October 16, 2026.
- DAFI 2023 product catalogue ↗ — checked October 16, 2026.
- DAFI filter and indicator support ↗ — checked October 16, 2026.
Is it the right fit?
Check the exact model and today’s offers on Amazon.