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To meet the special needs of customers for product quality
Committed to lead oxide products, lead salt products, inorganic pigments, rubber and plastic additives research and development, production and sales
火试金专用一氧化铅（黄丹）
Gold and silver free litharge (Lead Oxide Yellow)
Qingdao Dechen Chemical Co., Ltd. is top one choice for premium quality litharge. We guarantee gold levels are ≤1ppb in all litharge and guarantee silver levels are <0.5ppm. We are also the exclusive Chinese factory for both fire assay flux also gold and silver litharge.
The Fire Assay can supply all the necessary fluxes for the fire assay process, and we can also pre-mix them according to your own recipe. Externalising the production of your fluxes not only saves you time, but also avoids the manipulation of hazardous chemicals in your laboratory.
To protect the customers benefit, every shipment with SGS inspection before ETD.
For each batch that is made for a given customer, a counter sample is left, which is kept for three months.
The gold and silver free litharge is packed in 25kg bags, 25kg iron drum or as customers’ requirement.
青岛德臣化工有限公司是优质火试金专用一氧化铅的首选。 我们确保我们生产的一氧化铅中的金含量≤1ppb，银含量<0.5ppm。德臣是唯一既生产火试金专用一氧化铅和火试金试剂的中国工厂。
我们可以根据客人要求的配方生产火试金试剂。在我们工厂生产不仅节省了您的时间也同时避免了您的实验室危险品的操作。
为了保护客户的利益，我们的每一批货都是在SGS检验合格后才出运。
我们所发出的每一批货物都会留样存档三个月。
火试金专用一氧化铅采用25公斤袋装，25公斤铁桶包装或根据客户要求包装。
技术标准:
Technical standard:
项目 Items | 标准 Standard |
氧化铅 Lead Oxide %≥ | 99.5 |
金属铅 Free lead %≤ | 0.1 |
过氧化铅 Lead Peroxide %≤ | 0.05 |
硝酸不溶物 Nitric acid in solubles %≤ | 0.1 |
水份 Moisture %≤ | 0.2 |
三氧化二铁 Ferric Oxide %≤ | 0.005 |
氧化铜 Copper Oxide %≤ | 0.002 |
金（Au） ng/g max. | 1 |
银（Ag） mg/kg max. | 0.5 |
筛余物（180 目） Residue( 180 Mesh) %≤ | 0.5 |
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