The Receipts Behind NZ Whey
Proof, not promises.Backed by the lab, not just the label.
Anyone can print a number on a tub. We can show you where it came from. Every claim on this page traces back to a real document — the Fonterra batch our whey was made from, the independent test on every batch we pack, and the audited plant where it's made.
Why Everyday Kiwis Trust Xplosiv
Three Things Most Brands Can't Show You
Transparency isn't a tagline here — it's a paper trail. Here's what sits behind every tub of Xplosiv NZ Whey.
What's in the tub is tested
Every batch is independently lab-tested — protein content, heavy metals, contaminants, and 250+ banned substances — and we're publishing the results here, batch by batch. Not the first batch. Every batch.
Where it came from is traceable
Take any batch: our whey traces back through our production records to a single Fonterra batch — provable because the same reference numbers appear across independent documents, ending in Fonterra's signed Certificate of Analysis.
Where it's made is verified
Blended and packed at VitaLabs, a New Zealand-owned GMP facility in Auckland — independently audited by SGS and AsureQuality to GMP-NZ, HACCP and MPI standards.
Tested. Every. Batch.
From Protein-Only to a Full Panel — On Every Batch
We used to test protein content on selected batches. Now every batch is independently tested across a full panel — and we're publishing the Certificate of Analysis here, batch by batch.
Protein content
Verified against the number on the label — within normal analytical variation, on file for every batch.
Heavy metals
Screened for lead, cadmium, arsenic and mercury — including contaminants that can come from added ingredients.
Contaminants
Microbiological and contaminant screening on the finished, blended and packed product — not just the raw whey.
250+ banned substances
HASTA certified — a programme accredited by the World Anti-Doping Agency (WADA) screening for 250+ banned substances.
Transparency, in progress
We're publishing it as it lands.
Given what's happened across the supplement industry in recent days, we moved fast to pull this together and put it in the open. We've built this testing section at pace — the full finished-product Certificate of Analysis data, and more, will be added right here over the coming days.
Don't take our word for it — check HASTA.
Every batch of our NZ Whey and NZ Isolate is listed on HASTA's public certified register — verified independently, not by us.
Check our batches on HASTA →Earlier Test
NZ Whey Chocolate
✓ Tested within 5% variance — PASS
An earlier independent test of our NZ Whey Chocolate came in within 5% of its 23g label claim. We're adding the full test figures here as we build this section out.
Why the finished product, not just the raw whey? Added ingredients (like cocoa) can introduce their own contaminants — so heavy-metal and contaminant testing is done on the final product, after blending and packing. That's the honest place to test.
How It's Made
Documented End to End — Here's the Process
Made at VitaLabs in Auckland under a controlled, signed-off production system — every step checked and signed before a batch is released.
Goods arrive & get a number
Every incoming raw material is assigned its own unique Inwards Goods (IG) number. Nothing enters production unlabelled.
Dates checked, samples kept
Best-before dates and batch numbers are checked and recorded on arrival, and a 50 g retention sample is kept so any batch can be re-checked later.
Pre-production sign-off
Before a batch starts, dates and batch numbers are re-verified, the formulation is confirmed against the approved master formula, and hygiene and equipment checks are completed and signed.
Controlled blending
Blended in controlled sub-batches, then sieved — for an even, consistent mix from the first scoop to the last.
In-line weight checks
Fill weights are checked throughout the run and held at or over target — never under. You get at least what's on the label.
Seal, label & reject checks
Seal, label, batch number and best-before are checked and signed; any unit that fails a check is pulled and recorded as a reject.
Sample pulled for testing
A sample is pulled from every batch and sent for independent laboratory testing — the Certificate of Analysis behind the "tested every batch" promise.
Yield recorded & released
Final yield is recorded and the batch is released only once every check is complete and signed off.
Traceable to the Source
From Our Production Sheet to Fonterra's Signed COA
"NZ whey" should mean something. Here's a worked example — one batch, traced end to end — showing how every Fonterra delivery links to its own certificate. Every link backed by a document, every document sharing the same reference numbers.
Our production sheet
Logs the whey used in the batch by its Inwards Goods number.
IG 16787The Fonterra delivery
That IG number matches the Fonterra consignment delivered to our VitaLabs plant in Rosedale, Auckland — 5,000 kg of NZ whey protein concentrate.
Consignment 14657718One Fonterra batch
The delivery ties to a single Fonterra production batch from the Lichfield whey factory.
Batch 23369597That batch's signed COA
That exact batch has its own Fonterra Certificate of Analysis — raw whey (WPC80) at 77.91% protein (81.8% dry basis), with E. coli, Salmonella and Listeria all not detected — signed and stamped by Fonterra's GM of Global Quality.
COA 501042355The proof: same numbers, independent documents
The incoming raw whey. This is the Fonterra ingredient certificate — proof of genuine NZ Fonterra whey, traceable to the exact batch. The finished tub is then tested separately (see Tested Every Batch).
Independently Verified
Made at a Plant That's Audited by Others
Our NZ Whey is blended and packed at VitaLabs, an Auckland GMP facility whose systems are independently certified and audited.
SGS
Independent auditor of the VitaLabs plant's quality and food-safety systems.
AsureQuality
New Zealand government-owned food assurance body — independent verification of the facility.
GMP-NZ
Good Manufacturing Practice certification for the manufacturing facility.
HACCP
Hazard Analysis & Critical Control Points — the food-safety management standard.
MPI standards
Manufactured to New Zealand Ministry for Primary Industries requirements.
HASTA (product)
Product-level: every batch screened for 250+ WADA banned substances. Verify on HASTA →
Two kinds of proof, kept separate on purpose: SGS, AsureQuality, GMP-NZ, HACCP and MPI verify the plant and its systems — where our product is made. HASTA and the finished-product Certificate of Analysis verify the product itself — what's in the tub. Certificates available on written request.
That's Our Founder — Made in New Zealand
That's John Birrell, our founder, inside VitaLabs — the New Zealand facility where every tub of Xplosiv NZ Whey & NZ Isolate is made and tested. — John Birrell, Founder, Xplosiv Supplements
Now You've Seen the Proof
NZ Sourced. NZ Made. Lab-Verified.
Three formulas, one standard — backed by the lab, not just the label. Choose yours.
Our quality guarantee: if your first tub doesn't meet your expectations, email us at [email protected] and we'll make it right.