Aczet® Stark Pro Pin - XRF Gold Testing Machine

The Aczet® Stark Pro Pin is a benchtop X-ray fluorescence (XRF) analyzer engineered for rapid, non-destructive gold and precious metals analysis. Built for jewelry professionals and assayers, it delivers precise elemental identification with a high-resolution Silicon PIN detector—offering approximately four times better element separation and lower detection limits than standard proportional counter systems. Key specifications include a bottom-to-top X-ray configuration with a tungsten target tube operating at 50kV, measurement times of 15–180 seconds depending on sample type, and X-MasteR software supporting both empirical and fundamental calibration modes. Pre-calibrated for gold analysis, the system works seamlessly on solids, liquids, and powders without sample preparation or destruction. Ideal for jewelry workshops, assay labs, and quality control environments where speed, accuracy, and non-destructive testing are essential.

Warranties are issued by the manufacturer of an item and not our store. If an item you bought is defective within the 30 days of your purchase date, we will gladly replace it for you if a receipt is present. Otherwise, we will be more than happy to help you obtain any information you need in order to properly communicate with the manufacturer of your item. Please note that if you choose to have us correspond with the manufacturer regarding your item, there will be a shipping fee and/or a repair charge if the item's warranty is deemed to be expired. 

We want you to be happy with your purchase and would like to be transparent with our returns policy.

ONLINE returns are accepted within 30 days of the purchase date. All items must be unused and in their original packaging. To return an item, please contact us by e-mail or by phone to obtain an RMA number. We will gladly refund you in the original form of payment. Shipping costs for returns are paid for by customers unless item(s) are deemed to be defective or shipped incorrectly by us. Items that do not have a receipt will be issued a store credit if and when approved for return within the 30 days period. Please note, special orders are non-refundable and non-exchangeable.

STORE returns are accepted within 7 days of the purchase date but will be credited with a store credit. There are no cash returns on items purchased in store. Returns of damaged or defective items will be considered within 30 days of the purchase date.

Please note, any purchases made specifically for Trade Shows will not be authorized for return or exchange.