Match various models of automatic samplers such as Agilent and Waters. Sample bottles are available in transparent, brown, transparent with scale markings, and brown with scale markings for selection. The bottle mouth design ensures consistent sealing, high-precision processing technology, strict quality control, and ensures the consistency of dimensions between batches. The uniform flat bottom ensures compatibility with the inner tube, and the ceramic writing plate is easy to mark. A 100000 level dust-free purification workshop ensures the cleanliness of products.