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NixTech
//XAU Testing

From the XRF to a certificate anyone can verify.

XAU Testing runs a gold, silver and platinum testing centre from counter to collection. It connects your XRF machines directly to the software, so a purity reading travels from the instrument to a certificate with a verification QR code without anyone retyping it, and every step is tracked, audited and printable.

  • XRF readings straight to screen
  • QR-verifiable certificates
  • Nothing lost in an outage
  • Full audit trail
[ XAU Testing ]xrf → certificate
XRF station 02 · job T-4812streaming
Readings · Au %0/3
  • Spot 1--.--
  • Spot 2--.--
  • Spot 3--.--
Avg
--
Karat
--
Touch
--
spread --% · within limit
CertificateXT-004812
Item
Bangle · 18.42 g
Gold
pending
Copy
original
Waiting for readings
Audit trailreceived · tested · approved · handed over
//The problem

A certificate people pawn gold on shouldn't depend on retyping.

A testing centre takes in jewellery, measures its purity on an X-ray fluorescence machine and issues a certificate that customers rely on to buy, sell or pawn. On paper that means receipt books, readings copied by hand off the machine's screen, and certificates typed up afterwards.

It is slow at the counter, every copy is a chance for a mistake on a document with real money riding on it, and a buyer has no way to check that a certificate is genuine.

//How it works

One item, followed from receipt to collection.

  1. 01

    Intake

    Find the customer as you type, choose a service to set the price, print a QR receipt.

  2. 02

    Photograph

    Scan the QR on any phone, confirm the serial, photograph the item. No app.

  3. 03

    Test

    Readings stream from the XRF with purity, karat and touch calculated live.

  4. 04

    Certify

    Quality checks pass and the certificate is issued once, with its QR code.

  5. 05

    Hand over

    Match the item to its intake photo, take payment, send the certificate on WhatsApp.

//At the counter and the bench

Built around the instrument, not a notebook.

01

Fast counter intake

Returning customers appear as you type, choosing a service sets the price, and the receipt prints with a QR code. Serial numbers continue from your existing paper book, so nothing restarts on day one.

02

Item photos from any phone

Scan the receipt, confirm the serial matches the item in hand and take the photo. There is no app to install.

03

Live testing stations

Readings arrive from the XRF machine directly on the operator's screen, with average purity, karat and touch calculated as they come in.

04

Quality checks with sign-off

When readings disagree, the certificate can't be issued unless a manager signs off, and every adjustment needs a recorded reason.

05

Handover & payment

Scan the receipt, compare the item with its intake photo, and take cash, card or trade credit. The certificate goes to the customer on WhatsApp in one tap.

06

Customer tracking page

Customers follow their item through each stage from received to collected. Results are revealed only once the item is certified.

//Certificates you can stand behind

Issued once. Checkable by anyone.

01

Can't be quietly altered

Each certificate is issued once and stored. Reprints are marked as duplicates, and corrections are made by revoking and reissuing under a new number.

02

Public verification by QR

Every certificate carries a QR code that opens a public verification page showing the tested item's photo.

03

Your designs, and your partners' brands

Keep several certificate designs, and issue certificates under the brand of jewellers who resell your testing.

04

Reports & trade accounts

Daily reports, pending items, machine utilisation, and monthly statements for trade customers.

05

Roles & audit trail

Four staff roles with individual logins, and a full record of who took in, tested, approved and handed back every item.

//Who it's for

Trusted on both sides of the counter.

Testing centresWalk-in customers, trade accounts and a queue at the counter, run from one system.
Jewellers who resell testingCertificates under their own brand, with monthly statements on trade credit.
Buyers & lendersScan the QR and see the certificate and the item's photo before money changes hands.
//Built for a real shop floor

The counter keeps working when the WiFi doesn't.

A testing centre can't close because a cable was pulled. XAU Testing is designed for the conditions a counter actually works in.

  • Each machine PC saves every reading to disk before sending it, so a dropped network or a restart never loses a result
  • A reading that can't be matched to a job lands in an inbox for staff to resolve instead of disappearing
  • If a machine goes offline, operators type the result in and the audit trail marks it as manual
  • Runs on one small PC in the shop, with counters, tablets and phones using a browser over WiFi, or hosted in the cloud
  • Guided first-run setup, with no default passwords
//Technology

Under the hood

  • Fischer XRF (WinFTM) integration
  • Windows machine agent
  • Next.js · React · TypeScript
  • PostgreSQL · Prisma
  • Live updates (Server-Sent Events)
  • PDF certificate rendering
  • Docker · on-premise or cloud
//Questions about XAU Testing

Straight answers about XAU Testing.

XAU Testing

Take the retyping out of your testing centre.

Show us how an item moves through your counter today, and we'll walk the same item through XAU Testing, from receipt to verified certificate.