薄层层析硅胶板是用高纯度薄层层析硅胶(粉状)调入一定量的粘结剂喷制成，板面纯白、平整均匀、细密。在医药、农药、中草药、有机化工产品及粮食、食品的微量杂质及主要成份的鉴定中已得到普遍应用。目前它在新材料，POM板POM棒上都有应用，而且在判断地沟油上也发挥出了重要作用。

Thin layer chromatography silica gel plate is made by spraying high-purity thin layer chromatography silica gel (in powder bbbb) with a certain amount of binder. The surface of the plate is pure white, flat, unibbbb, and fine. It has been widely used in the identification of trace impurities and main components in pharmaceuticals, pesticides, traditional Chinese medicine, organic chemical products, and grains and food. At present, it has been applied in new materials, POM boards, and POM rods, and has also played an important role in determining gutter oil.

硅胶板的规格分为:G ，H，GF254，HF254。
The specifications of silicone panels are divided into: G, H, GF254, HF254.
那这些型号到底代表什么意思?他们的依据是什么呢?
What exactly do these models mean? What is their basis?
"硅胶H"--不含粘合剂;
"Silicone H" - without adhesive;
"硅胶G"--含煅石膏粘合剂;
"Silicone G" - containing calcined gypsum adhesive;
"硅胶HF254"--含荧光物质，可用于波长为254nm紫外光下观察荧光;
Silicone HF254- contains fluorescent substances and can be used to observe fluorescence under 254nm ultraviolet light;
"硅胶GF254"--既含煅石膏又含荧光剂。

Silicone GF254- contains both calcined gypsum and fluorescent agent.