Firebird Metals Confirms 99.99% HPMSM Purity via Customer Testing

Firebird Metals Clears a Key Commercial Hurdle With >99.99% HPMSM Purity Confirmed by Customer Testing

Firebird Metals (ASX: FRB) has reported independent international customer test results confirming that its High-Purity Manganese Sulphate Monohydrate (HPMSM) achieved more than 99.99% MnSO₄ purity, with impurity levels materially below Chinese industry standards across all key measured parameters. According to the ASX announcement dated 2 July 2026, the result provides third-party validation of Firebird's battery-grade manganese sulphate production at a time when its Australian Demonstration Plant (ADP) remains on schedule and within budget.

For investors following the battery materials supply chain, the update matters because external customer testing carries more commercial weight than internal laboratory results alone. It also comes as Firebird continues commercial discussions with global original equipment manufacturers (OEMs), battery manufacturers and other downstream participants, according to the announcement.

What Was Tested and Why the Result Matters

The testing was conducted in June 2026 by an international potential customer on a Firebird HPMSM sample produced at the company's Hunan pilot plant. The sample was made using third-party ore and Firebird's in-line impurity removal process, then assessed against China national industry standards for manganese sulphate.

Those standards are important because they are widely used as a benchmark for battery-grade HPMSM quality. Furthermore, Firebird stated that its sample exceeded the China industry Superior Grade standard across every measured parameter.

The core result is summarised below.

According to the announcement, additional elements including barium, titanium, antimony, selenium, arsenic and mercury were also recorded at or below low detection levels. The majority of tested impurities came in at below 0.5 ppm, indicating a very low level of contamination in the final product.

This matters because battery manufacturers generally require tight chemical specifications. A producer may show strong laboratory performance, however customer testing is a more relevant step in proving whether the material is suitable for qualification programmes and future commercial supply discussions.

"Independent customer testing is one of the most important milestones in the commercialisation of any battery material. These results provide valuable third-party validation that Firebird can consistently produce high-purity manganese sulphate monohydrate (HPMSM) of exceptional purity, while reinforcing our engagement with prospective customers and strategic partners," said Ron Mitchell, CEO of Firebird Metals.

Understanding HPMSM and Why Purity Matters

HPMSM stands for High-Purity Manganese Sulphate Monohydrate. It is a refined manganese chemical used as an input for producing battery cathode materials, which are the part of a lithium-ion battery that stores and releases energy.

According to Firebird, manganese sulphate plays a similar role in manganese-based battery materials to the role lithium carbonate and lithium hydroxide play in other lithium battery supply chains. That makes it a key intermediate product rather than a niche by-product.

Which Battery Chemistries Use HPMSM?

The announcement identified three important cathode chemistries that use high-purity manganese sulphate:

• LMFP — lithium manganese iron phosphate
• LMR — lithium manganese rich
• NCM — nickel cobalt manganese

These chemistries are relevant to both electric vehicles and energy storage systems, two end markets cited in the update as drivers of growing demand.

Why Are Low Impurity Levels Important?

In battery materials, purity has considerable commercial significance because trace contaminants can affect how a battery performs. Elements such as iron, copper, zinc, sodium and calcium are measured in ppm (parts per million) because even very small amounts can matter during cathode production.

In practical terms, lower impurity levels help cathode manufacturers maintain product consistency. That is why passing a recognised industry benchmark is often necessary before a material supplier can progress through formal qualification steps.

What Does ICP-OES Mean?

The testing method referenced in the announcement is ICP-OES, short for Inductively Coupled Plasma Optical Emission Spectrometry. This is a standard laboratory technique used to measure very small concentrations of different elements in a sample.

For non-specialist investors, the key point is straightforward: ICP-OES is a recognised method for checking whether a chemical product contains unwanted trace elements, and at what level.

Firebird's Processing Approach and Why the Company Highlights It

In the announcement, Firebird described its in-line impurity removal process as a different approach from conventional HPMSM production. Standard processing routes often use multi-stage crystallisation, where impurities are removed through several separate steps as the manganese sulphate solution is refined.

Firebird stated that its method removes impurities directly in the solution phase before crystallisation, which the company says reduces the need for a separate two-stage process.

According to Firebird, this approach may offer several operational benefits:

• Fewer unit operations, which can simplify the process flow
• Lower capital requirements, due to reduced equipment needs
• Lower operating costs and energy use, relative to multi-stage routes
• Better impurity control, by treating the material in one continuous phase
• Direct transferability to the ADP, supporting continuity from pilot scale to demonstration scale

From an investor perspective, process quality alone is not enough. The market also looks for signs that quality can be maintained in a repeatable and scalable way. Firebird's use of third-party ore in the tested sample is another point the company emphasised, as it suggests the process is not limited to a single ore source.

Australian Demonstration Plant Remains a Near-Term Focus

While the customer testing validates product quality, Firebird's next major operational step remains the Australian Demonstration Plant. According to the announcement, the ADP is still on schedule and within budget, with major equipment procurement substantially complete and site development progressing as planned.

The ADP is intended to be Australia's first demonstration-scale facility capable of converting manganese ore into:

• HPMSM
• Manganese Iron Phosphate Precursor Cathode Active Material (MFP p-CAM)
• Cathode Active Material (CAM)

Demonstration plants sit between pilot work and full commercial production. They are used to produce larger volumes of material for customer qualification, optimise the process and support engineering for future scale-up.

The company outlined several expected benefits from successful ADP validation.

For the market, the ADP is likely to remain a core milestone because it links technical results with possible commercial outcomes. In addition, Firebird stated that the ADP will produce Australian-made samples for prospective customers while supporting process optimisation and the pathway to commercial-scale production.

Market Backdrop: HPMSM Prices and Demand Trends

The timing of the update also aligns with firmer pricing for battery-grade manganese sulphate. Firebird cited Shanghai Metals Market (SMM) data showing that HPMSM battery grade prices in domestic China increased approximately 23% year to date as of June 2026.

According to the company, this has been supported by demand from electric vehicles, energy storage systems and other lithium-ion battery applications. Firebird also stated that, based on its industry engagement, it anticipates demand for HPMSM to grow strongly over the coming decade.

Investors should note that the price commentary comes from market data cited in the company announcement, while the longer-term demand outlook reflects Firebird's own expectation based on customer engagement. Even so, the combination of stronger prices and positive demand indicators gives useful context to the company's push to qualify its product.

What This Means for Investors Watching ASX Battery Materials Stocks

This ASX announcement does not establish revenue, supply agreements or commercial production. However, it does address a central question often applied to battery materials developers: can the company produce material at the purity level customers require?

Based on the reported customer testing, Firebird now has third-party confirmation that its sample achieved more than 99.99% purity and outperformed the China Superior Grade standard across all listed measured categories. That is a meaningful step in reducing technical uncertainty around product quality.

Several points stand out from the current update:

• Third-party customer validation carries more weight than self-reported internal testing
• The sample was produced using third-party ore, which supports Firebird's claim of process flexibility
• The impurity profile was materially below required thresholds across all key parameters
• The ADP remains on schedule and within budget, preserving a near-term pathway to customer qualification samples
• Firebird continues to advance commercial discussions with global OEMs and battery manufacturers, according to the announcement

The next developments likely to attract market attention include completion of remaining ADP procurement, commencement of Australian-made sample production, further customer qualification progress and any future commercial agreements disclosed to the market.

For now, the 2 July 2026 update positions Firebird as a company moving from pilot-scale technical validation toward demonstration-scale customer engagement. In the battery materials sector, that transition is often closely watched because it helps determine whether promising process results can convert into commercial relevance.

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