General product information：

2023  Professional Flux factory with free samples
Fire Assay Flux is used in geochemical assay laboratories for detection of gold in ore samples. HUNAN FU QIANG SPECIAL CERAMIC MANUFACTURING CO.,LTD.  is the Chinese premier manufacturer and supplier of quality, gold free flux and litharge. Our quality system guarantees the levels of gold in the fire assay flux are less than 1-1.5ppb in the litharge component of the flux, making it ideal for low level assay work.
 
HUNAN FU QIANG SPECIAL CERAMIC MANUFACTURING CO.,LTD. prepares fluxes for fire test with raw materials of first quality with the formulas that each client requests. 
 
The raw materials are certified for the use of fire test flow, the main ones are litharge or lead oxide with SGS certified amounts of gold <1 ppb and Silver<1 ppm. In addition is used Borax anhydrous, sodium carbonate, silicon oxide, fluorite, and other elements to order of each customer.  
 
For each batch that is made for a given customer, a counter sample is left, which is kept for three months.
 
The fire assay flux is packed in 25kg bags, 25kg iron drum or as customers’ requirement. 
 
Technical specification for core material litharge:
Au< 1PPB    Ag<0.5PPM
 
 
FAQ
 
Can I get the sample order?
Yes, we welcome sample order to test and check quality. Mix sample are accepted.
 
How do you ship the goods and how long it takes arrive?
We usually ship by DHL, EMS Fedex or TNT. It usually takes 3 –5 days working days to arrive.
 
How to proceed the order if I have logo to print?
First, artwork for visual confirmation, and next the is sample picture to you.
 
Do you offer guarantee for the products?
Yes, we offer one year warranty for the products.