Spectrum Labs, the leader in filtration and laboratory dialysis.
联系我们关于我们文库展会
首页 : 常见问题 : 实验室透析 : Selection Guide
过滤
溶液袋和MBT套件
实验室透析
膜透析
动态透析
实验室耗材
细胞株管理
色谱分离

We are ISO 9001:2008 certified
新闻邮件订阅

Selection Guide for Spectrum Dialysis Membranes


Selecting "the Right Membrane"

The key to a successful dialysis separation is using the RIGHT MEMBRANE under the right conditions. There are 6 steps to follow when selecting a membrane:

  1. Select grade (Biotech or Standard) based on application.
  2. Select type based on chemistry: CE or RC.
  3. Select membrane configuration based on application (tubing, disposable device or flat-sheet system).
  4. Select from among 18 MWCO's based on solute size.
  5. Select from among 5 sizes (disposable device) or from among 16 flat widths (tubing) based on volume.
  6. Select the membrane treatment preferred for your application.

Use Spectrum's Dialysis Parameter Search to help select a product:

Spectra/Por Biotech Grade Membranes


Biotech membranes are specifically engineered for more critical separation constraints in which an ultrapure membrane with a precise MWCO is required. Since these synthetic membranes are manufactured using a process without metal salts, no pre-treatment or cleaning is required. Biotech membranes are available in 2 membrane types:
Biotech Cellulose Ester (CE) wide range of selectivity & purity
Biotech Regenerated Cellulose (RC)combined selectivity, purity & resistance
For ultimate convenience and ease-of-use, Spectrum offers:
Biotech Ready-to-Use Dialysis Devicessmall volumes, in-process sampling & rapid dialysis

Spectra/Por Standard Grade Membranes


Ideal for basic, multi-purpose dialysis, this low cost membrane can be used for a wide variety of dialysis applications in which only general separations are required and low level membrane impurities are of little concern. The standard RC type is composed of natural cellulose regenerated from cotton linters for strength and durability.
Standard Regenerated Cellulose (RC)broad range, low cost lab applications

Membrane Grade:Biotech Standard
Membrane Type:CERC RC
MWCO (Daltons):100-500, 500-1000, 3.5-5K, 8-10K, 20K, 50K, 100K, 300K, 1000K 3.5k, 8k, 10k, 15k, 25k 1k, 2k, 3.5k, 5k, 6-8k, 10k, 12-14k, 15k, 25k, 50k
Physical Properties:Opaque, Rigid, HydrophilicOpaque, Flexible, Hydrophilic Clear Flexible, Hydrophilic
Organic Resistance:FairGoodGood
pH Range:2 - 92 - 122 - 12
Temperature Limit:37°C60°C121°C
(Autoclavable)
Flat Sheet:NONOYES
Recommended
Closures:
Universal Only Universal Only Universal or Spectra/Por®
Ready-to-Use
Dialysis Devices:
Float-A-Lyzer G2
Tube-A-Lyzer
NO Dialysis Sacks

透析资源

透析基本原理
实验室透析常见问题解答
Ready to use Comparison
化学相容性表
膜孔径表
实验室透析应用
hi dave