Chromatographic Packing: After preparation, the particles used to fill the column are usually spherical particles with a particle size of 5-10.
Column tube: internally polished stainless steel tube. A typical liquid chromatography column size is 4.6 mm ID and 250 mm long.
Columns: Also known as stationary phases, chromatographic packings are filled into column tubes.
2. Fill the column with a dry filling method: Place a soft pad on the hard countertop, place the top of the empty column tube vertically on a soft pad, fill the funnel with 50-100 mg of filler each time, and then vertical the table pier 10-20 times .
Wet-filling: Also known as slurry filling, special filling devices are used.
3. Structure of the packing Chromatographic packing consists of two parts: the matrix and the functional layer.
Matrix: Often referred to as carrier or carrier, it is usually prepared as a spherical particle with a particle size of several micrometers to several tens of micrometers. It has a certain rigidity, can withstand a certain pressure, does not have a significant effect on separation, but only as a functional group. Carrier. Silica gel and organic macromolecule polymer microspheres are commonly used as substrates.
Functional layer: An organic molecule or functional group that is fixed on the surface of a substrate by chemical or physical means and plays a substantial role in the retention of sample molecules. A schematic diagram of the structure of the crown ether macromolecular stationary phase of the silica matrix, the functional layer crown ether molecule is adsorbed or bonded to the surface of the silica gel matrix.
The physical structure of the filler: divided into four types: microporous (or gel), macroporous (fully porous), thin shell, and superficial porous
In addition to pressure pots, gooseneck kettle, and coffee airtight canister, we have many other related coffee products, Espresso Tamper, cold brew coffee maker,glass tea pot,coffee maker, dual purpose, portafilter, coffee cup, Tamper Station and so on.
Our factory can provide OEM products, and we can combine products as one set according to your requirements.
I believe our excellent quality products and good service can more helpful for you. Welcome to ask for the catalog and more details.
FAQ:
1:How can I get the sample?
We can provide the sample for customers to check the quality.
Please kindly provide the delivery info for calculate the sample cost. If you have DHL /TNT/UPS/FEDEX account, please also kindly provide it to us.
You can do the payment of sample via T/T and PayPal.
2:How about the sample time?
Usually the sample time is 7~10 days after have the sample cost.
3:How long will it take for mass production?
Usually 45~60 days after have the deposit.
4:Can we have our logo or company name to be printed on your products or the package?
Welcome OEM.
5:what certificate can you provide?
CE,CB,GS,FDA,LFGB,ROHS are available here.
6:How can we get your monthly new products announcement?
Please join our mailing lists.
Welcome to provide the OEM requirement and ask for the quotation.
Will try the best to give you a good service.
Other Coffeeware kit,58Mm Espresso Tamper,With Silicone Base,Leaf Shape Design,Having Three Colors
Jiangmen Wellway Houseware Co.,Ltd , https://www.wellway-jm.com