Reference Materials
Reference Materials, or laboratory standards, are pulversied rock with known gold content and suitable for analysis by assay or aquaregia digest.
These are low cost, quality control aids used on an "every batch" basis to monitor the analytical process. They can be used by laboratories or by geologists who can submit Reference Materials in sachets together with their samples.
How are they prepared?
Reference Materials (also known as laboratory standards) are prepared from mineral matrices that contain gold which is uniformly distributed throughout the pulverized rock. Once appropriate material has been prepared and been confirmed as suitable by laboratory analysis it is packaged in to sachets or jars. A full homogeneity test is then carried out on a representative number of sub-samples from the packaged batch.
If there is no significant difference found between the sub-samples then the gold content is determined by consensus testing using a minimum of 15 reputable laboratories from several different countries. Standard statistical techniques are used to assign a recommended gold value with associated 95% confidence interval. Each sachet or jar is labeled with a unique number. A certificate, which includes details of the production and characterisation of the Reference Material, is issued with each consignment of sachets or jars sold.
Who can use them?
Laboratories will use them as part of their normal quality control process. Competent laboratories already do this but often they use "standards" which they have made themselves and which have not been subjected to rigorous homogeneity tests or had the gold concentration accurately determined through analysis by a large number of quality laboratories. Sachets are supplied with a "Labcheck" label when used by laboratories as part of their own quality-monitoring program. Laboratories may prefer to use Reference Materials packed in wide mouthed jars and which contain 2.5kg. Jars of Reference Material have been tested to check that the gold does not settle out from vibrations, eg. during transport.
Exploration and mine geologists can submit one sachet (option of 30g or 50g sizes available) with every batch of samples they send to the laboratory for gold analysis. If they send large batches they may choose to include one sachet with every 50 samples submitted. The sachets are robust and can be "thrown" in with their other samples. Because the sachets are sealed it does not matter if they get dirty or wet on the outside. Sachets are supplied with a "Geocheck" label when used by geologists submitting samples to a laboratory. They have a unique number on every sachet, but do not have the name of the Reference Material on the label.
Company Profile:
QINGDAO YOSION LABTECH CO., LTD. is a laboratory
service provider which devotes to R&D, production, sales and service.
Our
main business is automated sampling & preparation system, sample preparation
equipment, containerized laboratory, fire assay equipment & consumable etc.
Our products are mainly used in major ports, entry-exit inspection system,
research institutes, steel mills, mining companies, independent detection
institutions and so on. We have started global business expansion pace by
exporting our independent R&D products to our partners and customers all
over the world and planning to set up offices in Australia and Brazil.
After
years of operation, we have established strategic partnership with some leading
brands in Australia, United States, Germany, Canada and Brazil and have been
authorized as general agent which is responsible for sales and service in
China.
We believe in the philosophy of winning market by quality, obtaining
development by innovation and building brand by trustworthiness. So we devote
ourselves to promoting innovation and development of modern laboratory equipment
and creating safe, efficient and comfortable working environment for laboratory
workers.
Our first-class product quality and superb technical service have
won our customers' consistent high praise. Now we are working with domestic and
foreign scientific institutions to design and produce humane, intelligent and
modular laboratory equipments. Nowadays Yosion's staff adhere to the principle
of "proactivity, unity, factualism and rigorousness" and keep exploring and
innovating and dedicate to provide the most cost-effective products,
high-efficiency sample preparation project and meticulous
service.
FAQ
>> 1.Are you a factory or a trading company?
1.We are a factory focused on Reference Materials over 8 years.
2.Our main business is automated sampling & preparation system, sample preparation equipment, containerized laboratory, fire assay equipment & consumable etc.
3.We have numerous distributors at home and board.
>> 2.How do you control your quality?
1.Production process standardization, process standardization, refinement.
2.100% Finished Product Testing.
3.The third party product inspections are acceptable.
4.ISO Quality Management System Certificated Factory ,Can according to customer's requirement customize.
5.Inspection before loading
>> 3.What are your advantages compared with others?
1.Owned factory, the same quality product, the best price.
2.Timely Delivery with the support.