News
-
New Product for Pretreatment——SinCHERS
Do you still feel tired about complicated and time-consuming sample preparation? In pursuit of more efficient and faster sample pretreatment, Welch launched a new generation of product- SinCHERS pretreatment purification... -
Notice: Part Numbers Update
Welch Materials is announcing a Part Number update for Ultisil series products, but all the related products will remain the same features. Reason of Update With the expanding of Welch... -
Autumn is coming, please put on clothes for your column
When many analysts operate liquid chromatogram, columns work at room temperature. If the temperature in the laboratory can be kept constant, problem barely occurs. However, most working places’ temperature constantly... -
Flushing and Regeneration of Column Based on Polymer
Introduction of Column Based on Polymer Polymer matrix columns (Sugar-H, Sugar-Ca) may be contaminated, resulting in decreased column efficiency. Thus, flushing and regeneration are required. However, when flushing these columns... -
Poor Peak Shape, and How to Improve It
When the injection volume of test substance within the range of the security, changing injection volume will affect the peak height and peak area accordingly. But the influence of retention... -
Welch Materials, Inc. celebrates 1st year in US Headquarters
September 9, 2020 - New Haven CT USA Welch Materials, Inc. celebrated the one year anniversary of their official opening of the US HQ in West Haven, CT, USA. The... -
New Product Release: Blossmate™ PSV C18
Autumn has chilled the painted screen in candlelight; A palace maid uses a fan to catch fireflies. The steps seem steeped in water when cold grows the night; She sits... -
Welchrom® QuEChERS
QuEChERS(pronounced“catchers" ) stands for Quick, Easy, Cheap, Effective, Rugged and Safe - the qualities that describe this sample preparation method for food substances.The technique is quite simple, involving a minimum... -
How to Select a Suitable Column?
When you look up the pharmacopoeia method, you may find that it only stipulates the bonding phase of column and the information of other columns is not available. Therefore, you... -
Solid Phase Extraction(SPE)
Solid Phase Extraction Cartridges Over the last twenty years, SPE has become the most powerful technique prior to analytical chromatography for the cleanup, purification, and concentration of samples from various... -
Methods for Prolonging the Column Lifetime
Your column may suffer from short working life, which not only causes rising costs, but also impacts the experimental results. Today, we invite Welch engineers to answer questions about how... -
Knowledge for SPE Method Development
Mechanism of reversed-phase: Reversed-phase extraction separation mainly uses the non-polar force between C-H bonds on SPE functional groups and C-H bonds of target compounds. In general, non-polar reversed-phase SPE columns...