다음 MAP메이트™는 통합될 수 없습니다: -다른 분석 완충용액이 필요한 MAP메이트™. -인산 특이성 및 총 MAP메이트™ 조합, 예: 총 GSK3β 및 GSK3β(Ser 9). -PanTyr 및 자리 특이성 MAP메이트™, 예: Phospho-EGF 수용체 및 phospho-STAT1(Tyr701). -단일 표적(Akt, STAT3)를 위한 1개 이상의 1 phospho-MAP메이트™. - GAPDH 및 β-Tubulin은 panTyr를 포함하는 키트 또는 MAP메이트™와 통합될 수 없습니다.
Custom Premix Selecting "Custom Premix" option means that all of the beads you have chosen will be premixed in manufacturing before the kit is sent to you.
Catalogue Number
Ordering Description
Qty/Pack
List
이 제품은 즐겨찾기에 저장되었습니다.
종
패널 유형
선택하신 키트
수량
카탈로그 번호
주문 설명
포장 단위
기재 가격
96-Well Plate
수량
카탈로그 번호
주문 설명
포장 단위
기재 가격
다른 시약 추가 (MAP메이트 사용을 위해 완충용액과 검출 키트가 필요함)
수량
카탈로그 번호
주문 설명
포장 단위
기재 가격
48-602MAG
Buffer Detection Kit for Magnetic Beads
1 Kit
공간 절약 옵션 다수의 키트를 구매하시는 고객은 고용량 저장을 위해 키트 포장을 제거하고 비닐백에 담긴 멀티플레스 분석 구성품을 받아 저장 공간을 절약하도록 선택할 수 있습니다.
이 제품은 즐겨찾기에 저장되었습니다.
해당 제품은 고객님의 카트에 추가되었습니다.
이제 다른 키트를 사용자 지정하거나, 사전 혼합된 키트를 선택하거나, 결재하거나 또는 주문 도구를 종료할 수 있습니다.
Original design for a centrifugal ultrafiltration device, from the patent owned by Amicon Separation Sciences Bowers, William F., and Peter N. Rigopulos. Centrifugal Microconcentrator and Methods for Its Use. W. R. Grace & Co., assignee. Patent US 4632761 A. 30 Dec. 1986. Print.
The Original Amicon® Filter: Concentrating on Your Data Since 1965.
Since our original research on protein concentration using ultrafiltration1, we’ve arrived at perfection.
Today’s Amicon® Ultra filters are made with high-quality Ultracel® regenerated cellulose membrane. On this page, you’ll find technical information on the properties of ultrafiltration membranes and how they have been optimized for protein concentration and the fine separation of other macromolecular solutes.
1Blatt, WF et al. “Protein Solutions: Concentration by a Rapid Method.” Science. October 8, 1965, Vol. 150, No. 3693, p. 224-226.
Ultrafiltration Membranes
Ultrafiltration (UF) is the process of separating extremely small particles and dissolved molecules from fluids. The primary basis for separation is molecular size, although in all filtration applications, the permeability of a filter medium can be affected by the chemical, molecular or electrostatic properties of the sample.
Ultrafiltration can only separate molecules which differ by at least an order of magnitude in size. Molecules of similar size cannot be separated by ultrafiltration. Materials ranging in size from 1K to 1000K molecular weight (MW) are retained by certain ultrafiltration membranes, while salts and water will pass through. Colloidal and particulate matter can also be retained.
Ultrafiltration membranes can be used both to purify material passing through the filter and also to collect material retained by the filter. Materials significantly smaller than the pore size rating pass through the filter and can be depyrogenated, clarified and separated from high molecular weight contaminants. Materials larger than the pore size rating are retained by the filter and can be concentrated or separated from low molecular weight contaminants.
Ultrafiltration is typically used to:
Separate proteins from buffer components for buffer exchange, desalting, or concentration
Remove or exchange of sugars
Remove or exchange non-aqueous solvents
Separate free from protein-bound ligands
Remove materials of low molecular weight
Rapidly change ionic and/or pH environment
Depending on the protein to be retained, the most frequently used membranes have a nominal molecular weight limit (NMWL) of 3 kDa to 100 kDa.
Comparing Ultrafiltration and Microfiltration Membranes
Ultrafiltration membranes, such as Ultracel® regenerated cellulose membrane, generally have two distinct layers:
Thin (0.1-1.5 µm), dense skin with a pore diameter of 10-400 angstroms
More porous substructure below the skin
Any species capable of passing through the pores of the skin can therefore freely pass through the membrane. In regenerated cellulose, pore size is precisely controlled during a hydrolysis step inherent to the manufacturing process. Another advantage of regenerated cellulose is that it is amenable to heat-sealing and welding, which makes adhesives unnecessary. As a result, it is possible to manufacture regenerated cellulose-based devices that leach very few extractable impurities into the sample.
Microporous membranes (such as polyethersulfone) are generally rigid, continuous meshes of polymeric material with defined pore sizes. They are used to retain bacteria, colloids and particulates. Species are either retained on the membrane or are trapped in its substructure.
Cross-section of ultrafiltration membrane with skin and porous substructure.
Cross-section of traditional microporous membrane with uniform pore structure from top to bottom.
Which Membrane Should You Choose for Ultrafiltration?
Our customers have asked for a quick summary of membranes commonly used in filter devices to help understand the difference between ultrafiltration and microfiltration. We’ve summarized a few popular membranes in the table below.
Membrane
Appropriate for Ultrafiltration?
Appropriate for Microfiltration?
Ultracel® regenerated cellulose
BEST
N/A
Polyethersulfone (PES) (e.g. Biomax® membrane or Millipore Express® PLUS PES)